Page 2 Besides that, not all radios do have the very same features. Our flagship radio, the Radioddity DB40-D does come with the most features. In order to easy identify those differences, we do use the following icons throughout this manual:...
Page 3: Table Of Contents
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Table of Contents Table of Contents ....................3 About Radioddity ....................14 Disclaimer ....................15 Revision history of this document ............16 Product safety and RF exposure for portable radios......17 Notes on the use of the radio ................
Page 4 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Radioddity GD-88 Preparation ................. 37 5.3.1 Mount GD-88 Antenna ................37 5.3.2 Charge Radioddity GD-88 battery pack ..........37 5.3.3 Install Radioddity GD-88 battery pack ........... 38 5.3.4 Install Radioddity GD-88 hand strap and belt clip ....... 38 Accessories connection..................
Page 5 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Wide/ Narrow Band ..................60 DTMF for analog mode ................... 60 CTCSS / DCS ...................... 61 Channel Selection ....................62 6.10 Switch between VFO and Channel Mode ............62 6.11 VFO Frequency Set ....................
Page 6 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.1 Contacts ....................... 73 10.1.1 Contact list ..................73 10.1.2 New Contact ..................74 10.1.3 Manual Dial ..................75 10.1.4 Ham Contacts .................. 75 10.1.5 Ham Group Contacts ..............76 10.2...
Page 7 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.7.9 Signaling ................... 99 10.7.10 CTCSS Phase Reverse (Ctcss Tail) ..........100 10.8 Tone Set ......................100 10.8.1 Profiles ....................100 10.8.2 Key Tone (KeyTone) ................101 10.8.3 Power Tone ..................
Page 8 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.1.6 Frequency Range..................125 12.1.7 The Latest Update ................... 125 12.2 Basic Parameters ....................126 12.2.1 Radio Name ..................... 126 12.2.2 Language ....................126 12.2.3 TOT ......................126 12.2.4 Busy Channel Lockout ................127 12.2.5...
Page 9 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.5.4 Scanning Indicator .................. 139 12.5.5 Low battery Indicator ................139 12.6 Preset Keys (programmable function keys) ............. 140 12.6.1 Long Press Duration ................140 12.6.2 Available Function for the Preset Keys ..........141 12.7...
Page 10 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.7 Longitude (degrees) ................155 12.10.8 TX Freq [MHz] ..................156 12.10.9 TX QT/DQT ..................156 12.10.10 Transmit Delay ..................157 12.10.11 Prewave Time ..................157 12.10.12 Transmit Power .................. 157 12.10.13 APRS Tone...
Page 11 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13.6 CH Name ......................176 13.7 RX Freq ......................... 177 13.8 TX Freq ........................177 13.9 Power ........................177 13.10 RX Only ......................... 177 13.11 Alarm ........................177 13.12 Prompt ......................... 178 13.13...
Page 12 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13.32 TX QD/DQT (TX CTCSS/DCS) ................193 13.33 APRS ........................193 Firmware Update ..................194 14.1 Firmware update ....................194 14.2 Install program for firmware update ............... 194 14.3 Perform Firmware update ................. 194 14.4...
Page 13 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 16.5 Simplex digital DMR operation with a Single-HAT hotspot ......218 16.6 Duplex digital DMR operation with a Dual-HAT hotspot ....... 219 16.7 Digital DMR operation with digital repeater ........... 221 Connectivity .....................
Page 14: About Radioddity
About Radioddity ‘You, our friend, and customer, are our focus’ At Radioddity, customers are important to us. As a customer, your time and money are important to you. When you buy radios online, you face a dilemma: buy from a reputable website at a high price, or try to save money by choosing a dealer who may or may not offer quality goods, service, and advice.
Page 15: Disclaimer
The described function/feature is only available for the Radioddity DB40-D. The described function/feature is only available for the Radioddity GD-88. Parameter names, as displayed on the screen of the Radioddity DB25-D, DB40-D or GD-88 are written bold&italic. © Radioddity 2023 page 15 of 252...
Page 16: Revision History Of This Document
We will try our best to make the next version of this document of even more added value for you.
Page 17: Product Safety And Rf Exposure For Portable Radios
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 3 Product safety and RF exposure for portable radios Before using the radio, please read this manual carefully. It contains important instructions for the safe and proper use of the radio and operating instructions for...
Page 18: Maintenance And Cleaning
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Maintenance and Cleaning To ensure the best performance and prolong working life, please acquaint yourself with the following for maintenance and cleaning. 3.2.1 Maintenance 1. Please do not scratch or puncture the device with hard or sharp object.
Page 19: What Is In The Box
4 What is in the box? Thank you for choosing a Radioddity DB25-D, DB40-D or GD-88 radio. We recommend that you first check the delivery contents listed in the following tables and keep the packaging for later storage. If something is missing or damaged, please contact your dealer immediately.
Page 20 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Item Picture Mounting Bracket Rack mounting Screws (2) Programming Cable Box manual © Radioddity 2023 page 20 of 252...
Page 21: Bill Of Materials For Radioddity Db40-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Bill of materials for Radioddity DB40-D Item Picture Radioddity DB40-D Mobile Radio Speaker Microphone DC Power-cable (for use with cigarette lighter socket) Mini GPS Antenna Remark: The radio does also support active GPS-antennas connected to the GPS-port.
Page 22 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Item Picture Bluetooth Handsfree Earset Spacer (pull over Earpiece to assure MIC-hole will not be covered by the skin) USB charging cable for BT-accessories Mounting Bracket Rack mounting Screws (4)
Page 23: Bill Of Materials For Radioddity Gd-88
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Bill of materials for Radioddity GD-88 Item Picture Radioddity GD-88 Handheld Radio Dual-Band Antenna Li-Po Battery, 3000 mAh Charging Base Power Supply (Type depending on country of sales) © Radioddity 2023...
Page 24 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Item Picture Belt Clip Hand strap Programming Cable Box Manual Notes: Further accessories for your radio are available at: https://www.radioddity.com/ © Radioddity 2023 page 24 of 252...
Page 25: Prepare Radio For Operation
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5 Prepare radio for operation Radioddity DB25-D Preparation 5.1.1 Radioddity DB25-D preparation and mounting For sake of your own and passenger’s safety, please find a safe and convenient position in order to prevent any damage caused by moving car. Check about suitable and allowed positions with the manufacturer of your car.
Page 26: Radioddity Db25-D Antenna Connection
Notes: If transmitting without an antenna or other matched load line, it could damage the Radioddity DB25-D. The antenna must be connected to the radio before transmitting. All base stations should be equipped with lightning arrester to reduce the risk of fire, electric shock, or radio damage.
Page 27: Radioddity Db25-D Power Supply Options
The vehicle battery must have a nominal rating of 12 V. Never connect the Radioddity DB25-D to a 24V battery. Be sure to use a 12 V vehicle battery that delivers sufficient current. If the current to the DB 25-D is insufficient the display may darken during transmission or transmitting output power may drop excessively.
Page 28: Base Station Operation
HF radiation to enter the power supply lines. Notes: If you use the Radioddity DB25-D for a long period and the vehicle battery is not fully charged or when the car engine is OFF, the car battery may become discharged and will not have sufficient power left to start the vehicle.
Page 29: Replace Fuse
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 3. Connect the radio's DC power connector to the connector on the DC power cable. Press the connectors firmly together until the locking tab clicks. Additional clip-on ferrites applied to the power cable and close to the radio will prevent any HF radiation to enter the power supply lines.
Page 30: Connect Speaker Microphone
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.1.5 Connect Speaker Microphone 1. Please insert the provided speaker microphone to the Mic jack on the left side of the radio to allow voice communication. Push in the connector until you hear a click sound from the locating plate in place.
Page 31: Radioddity Db40-D Preparation
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Radioddity DB40-D Preparation 5.2.1 Radioddity DB40-D preparation and mounting For sake of your own and passenger’s safety, please find a safe and convenient position in order to prevent any damage caused by moving car. Check about suitable and allowed positions with the manufacturer of your car.
Page 32: Radioddity Db40-D Antenna Connection
Notes: If transmitting without an antenna or other matched load line, it could damage the Radioddity DB40-D. The antenna must be connected to the radio before transmitting and capable to withstand an output power of more than 40 W.
Page 33: Radioddity Db40-D Power Supply Options
The vehicle battery must have a nominal rating of 12 V. Never connect the Radioddity DB40-D to a 24V battery. Be sure to use a 12 V vehicle battery that delivers sufficient current. If the current to the DB40-D is insufficient the display may darken during transmission or transmitting output power may drop excessively.
Page 34: Base Station Operation
HF radiation to enter the power supply lines. Notes: If you use the Radioddity DB40-D for a long period and the vehicle battery is not fully charged or when the car engine is OFF, the car battery may become discharged and will not have sufficient power left to start the vehicle.
Page 35: Replace Fuse
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 power cable to connect the Radioddity DB40-D to a regulated power supply. Do not substitute a cable with smaller gauge wires. 3. Connect the radio's DC power connector to the connector on the DC power cable.
Page 36: Connect Speaker Microphone
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.2.5 Connect Speaker Microphone 1. Please insert the provided speaker microphone to the Mic jack on left side of the radio to make voice communication. Press the connector until you hear a click sound from the locating plate in place.
Page 37: Radioddity Gd-88 Preparation
Radioddity GD-88 Preparation Before using the Radioddity GD-88 for the very first time, please make sure that the supplied antenna has been mounted to the radio and that the supplied battery has been fully charged and mounted to the radio.
Page 38: Install Radioddity Gd-88 Battery Pack
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.3.3 Install Radioddity GD-88 battery pack Slide in the battery with its two noses sliding into the notches underneath the blank metal piece on the backside of the radio. Firmly push it down on its lower end.
Page 39: Radioddity Db25-D Speaker-Microphone
On the Radioddity GD-88 those ports are on the right side and covered by a rubber cover. Notes: More details on this K1 style connector are to be found in Chapter 17.5 K1 connector on page 224.
Page 40: Parts Description & Function Applications
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.5.1 Parts description & function applications Part Name Function description and applications [ ] Power Press and hold it for more than 3 sec to turn the radio Switch on or off.
Page 41: Left Side Of Db25-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.5.2 Left side of DB25-D Part Name Function description and applications 1) For external accessories connection, such as earpiece, speaker. SP/MIC jacket 2) Connect the programming cable here to get connection with the PC for data programming.
Page 42: Rear Panel Of Db25-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.5.3 Rear panel of DB25-D Part Name Function description and applications Install the external antenna to this port. In TX testing, please install a dummy load to replace the antenna.
Page 43: Speaker Microphone Of Db25-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.5.4 Speaker Microphone of DB25-D Part Name Function description and applications The Speaker- Used to receive audio from others (Audio output Microphone options can be set from the menu option)
Page 44: Radioddity Db40-D Speaker-Microphone
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.5.5 Radioddity DB40-D Speaker-Microphone Please insert the provided Speaker-Microphone (with built-in speaker) to the RJ45 jack on left side of the radio to make voice communication. Press the connector until you hear a click sound from the locating plate in place.
Page 45 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Part Name Function description and applications PF1/ PF2 Programmable function keys Programmable function key ([Offhook]-key) Press and then speak in to the microphone to [PTT] key transmit; Release it to receive.
Page 46: Rear Panel Of Db40-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.6.2 Rear panel of DB40-D Part Name Function description and applications Install the external antenna to this port. In TX testing, please install a dummy load to replace the antenna.
Page 47: Speaker Microphone Of Db40-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.6.3 Speaker Microphone of DB40-D Part Name Function description and applications Press and then speak in to the microphone to [PTT]-key transmit; Release it to receive. The Speaker- Used to receive audio from others (Audio output...
Page 48: Radioddity Gd-88 Radio Controls
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Radioddity GD-88 radio controls Part Name Function description and applications [P2] Programmable function key 2 Press and then speak in to the microphone to [PTT] transmit; Release it to receive.
Page 49 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Part Name Function description and applications Power switch / 1) Turn the radio On/Off Volume control 2) Choose the proper volume level for your needs 1) For external accessories connection, such as Speaker / Mic earpiece, speaker.
Page 50: Radioddity Db25-D Display
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Radioddity DB25-D display Radioddity DB40-D display 5.10 Radioddity GD-88 display © Radioddity 2023 page 50 of 252...
Page 51: Status Icons
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.11 Status Icons In part, the shown icons differ, based on the actual radio model. Icon Icon description Functional description 6 red bars indicate high power High Power Low Power...
Page 52 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Icon Icon description Functional description Appears when the radio is in Talk Talk Around Around Mode Roaming Appears when Roaming is on Roaming Lock For locking current channel in Roaming...
Page 53: Transmit / Receiving Icons
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Icon Icon description Functional description Mandown detection activated Mandown DTMF DTMF mode is active Bluetooth available. If icon is solid, a BT Bluetooth Earpiece has been connected Bluetooth PTT Bluetooth PTT paired 5.11.1 Transmit / Receiving Icons...
Page 54: Keypad Operations
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.12 Keypad operations Please follow the key operation described below to simplify the instructions and avoid unnecessary duplication. Instruction Operation Short press the button and release it Press the [XXX] button...
Page 55: Main Functions Description
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.13 Main functions description The chapter does describe the main functions of the radio. Some of them are only available in analog operating mode (FM), others are only available in digital operating mode (DMR) and a few of them are in common for both operating modes.
Page 56: Analog Functions
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.13.2 Analog Functions Function Description Analog channel An analog call is a call on an analog channel. call Narrow / Wide Working bandwidth for the radio Band (Narrow band: 12.5 kHz, Wide band: 25 kHz) It is the signal strength required to adjust the received signal.
Page 57: Using The Numeric Keypad
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 5.14 Using the numeric keypad The numeric keypad of the Speaker-Microphone / the radio can be used to input frequencies/channel numbers, user alias or ID or SMS. Almost all characters require pressing a key for several times (up to 30 times).
Page 58: Basic Operation
‘click’ to power on the radio till a ‘Beep sound’ is heard (if turned on). After power on, the Radioddity logo and ‘Powering On’ text is shown on the display. The radio is now in standby-mode.
Page 59: Switch Vfos
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 once the radio is on. Level 9 is the highest level and the required received signal strength is the strongest. ‘PTT’ displayed to the lower left of the channel name of the upper VFO A or the lower VFO B indicates the selected VFO.
Page 60: Busy Channel Lockout
[PTT]-key. Wide/ Narrow Band When the ‘ ’ icon (DB25-D), ‘PTT’ (DB40-D) or ‘CTRL’ (GD-88) is shown left to the channel name you may set the bandwidth of the currently selected VFO A or B by accessing the menu.
Page 61: Ctcss / Dcs
1. In standby, press the [Menu]-key to access the menu and choose ‘Parameters’ → ‘Signaling’. 2. In standby, long press the [B/E]-key (DB25-D), [ENC] (DB40-D) or [A/B]-key (GD- 88) to access the Channel-Attributes, and choose ‘RX/TX signaling’ / ‘Rx/Tx SubType’.
Page 62: Channel Selection
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Channel Selection The desired working channel can be selected as follows: 1. When the ‘ ’ icon, ‘PTT’ or ‘CTRL’ is shown left to the channel name of VFO A or B, rotate the [ENC] knob or use the [▲/▼] to select the desired channel.
Page 63: Zone / Channel Selection
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 6.12 Zone / Channel Selection When the ‘ ’ icon, ‘PTT’ or ‘CTRL’ is shown left to the current VFO A or B, the following two methods can be used to select the desired zone, channels switching and zone name modification or editing.
Page 64: Repeater / Talk Around
TimeSlot as assigned to the currently selected channel. Notes: If you are unable to assign ‘Promiscuous’ to your Radioddity GD-88, then you are not using our latest CPS. Older versions of our CPS are not capable of assigning it.
Page 65: Scan On/Off
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 6.18 Scan On/Off When the ‘ ’ icon, ‘PTT’ or ‘CTRL’ is shown left to the current VFO A or B, turn scan On/Off by the following two ways. 1. Turn scan On/Off by programming a [Scan On/Off]-key.
Page 66: Using The Radio Menu
7 Using the radio menu Set various functions and parameters by accessing the main menu and submenu of the radio. The menu function options supported by the Radioddity DB25-D, DB40-D and GD-88 are shown in the table below. The programmable [P]-keys are function shortcut keys, for specific functions and may be pre-programed using the Radioddity CPS.
Page 67: Accessing The Menus And Operations
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Accessing the menus and operations Access the main menu and submenu options to set or browse various parameters (like message checking, editing, and sending, etc.) through the following operations and steps. Some of the menus may be enabled or disabled using the Radioddity CPS.
Page 68: Placing A Ptt Call
Private calls, Group calls, and All calls can be made to the preset contacts on the current digital channel (All call rights need to be allowed by the Radioddity CPS), and the methods for initiating and receiving all types of calls are the same. Each digital channel can be preset using the Radioddity CPS with a ‘transmission...
Page 69 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Operation method Call Type Make a call Receive a Call In Standby Mode, press the When Private Call [PTT]-key to initiate the call. received, the screen displays: When Private Call...
Page 70: Initiate A Digital Radio Call
Talker Alias (TA) is used to send a fixed text, such as call sign or call sign & name. The maximum length within the Radioddity DV25-D, DB40-D and GD-88 is limited to transmit 16 ISO 8bit characters which do represent the CPS-setting for ‘Radio Name’.
Page 71: Special Dmr Functions
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 9 Special DMR functions Use our Radioddity CPS software to enable/disable and preset any of the Preset Buttons with one of the following functions. Notes: For more details on how to program the Preset Keys, please check chapter 12.6 Preset Keys on page 140...
Page 72: Call Alert
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 9.1.5 Call Alert Preset to prohibit or allow the radio from receiving alert tone to ask for calling back when you are free. 9.1.6 GPS Turn on/off GPS and position report feature to report the position information to the preset designated channel and TalkGroup at the preset intervals.
Page 73: The Radio Menu Functions In Detail
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10 The radio Menu functions in detail The various functions, applications and parameter configurations of the radio can be checked and set by menus, if those have been enabled using the Radioddity CPS. 10.1 Contacts The contacts provide the ‘address book’...
Page 74: New Contact
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (2) Edit (contact) → Press the [Select]-key → rotate the [ENC] knob or use the [▲/▼]-keys to choose either Number, Name, Type or Save → press the [Select]- key to input the number, name, or type (Call Type) and press the [OK]-key to confirm and return to the previous level →...
Page 75: Manual Dial
[Select]-key to confirm the selected option → return to the previous level. 10.1.4 Ham Contacts The Radioddity DB25-D, DB40-D and GD-88 can permanently store up to 300.000 HAM contacts within its internal memory. 1. Access the menu, press the [Menu]-key and rotate the [ENC] knob or use the [▲/▼]-keys to select Contacts...
Page 76: Ham Group Contacts
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 • Input the first few digits of the private contact ID to search using the numeric keypad of the Speaker-Microphone → press the [OK]-key to confirm → the display shows the search results → rotate the [ENC] knob or use the [▲/▼]- keys to choose the desired ID.
Page 77: Message
5. Press the [Back]-key to return to the previous level. 10.2 Message The Radioddity DB25-D, DB40-D and GD-88 can receive and send text messages (SMS) from and to other radios. Those are text messages within the DMR network. Sending/receiving of text messages to/from normal mobile phone networks is not supported.
Page 78: Createmsg
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.2.2 CreateMsg 1. Press the preset [SMS]-key to access the menu. 1. Access the menu, press the [Menu]-key and rotate the [ENC] knob or use the [▲/▼]-keys to select Message and press the [Select]-key to enter.
Page 79: Inbox
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 • AddCommMsg → press the [Select]-key → input the message using the numeric keypad of the Speaker-Microphone → press the [OK]-key → choose either Save or ExitEditor → press the [Select]-key → return to the previous level.
Page 80: Outbox
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 from one of the options of either SearchLinkman, WriteNumber, lnsertComMsg or Save. • Delete → ‘Are you sure?’ pops up on the screen → press the [OK]-key to confirm deletion or press the [Back]-key to cancel deletion → return back to previous level.
Page 81: Draftbox
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.2.6 Draftbox 1. Access the menu, press the [Menu]-key and rotate the [ENC] knob or use the [▲/▼]-keys to select Message and press the [Select]-key to enter. 2. Rotate the [ENC] knob or use the [▲/▼]-keys to Draftbox, and press the [Select]-key to choose from one of the following options: (1) Draftbox list →...
Page 82: Received Calls
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Rotate the [ENC] knob or use the [▲/▼]-keys to DailedNumbs and press the [Select]-key to choose from the following options: (1) DialedNumbs list → press the [Select]-key → Rotate the [ENC] knob or use the [▲/▼]-keys to choose the number/contact →...
Page 83: Missed Calls
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 • Delete → ‘Are you sure?’ text pops up on the screen → press the [OK]-key to confirm deletion or press the [Back]-key to cancel deletion → return back to previous level.
Page 84: Scan List
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 2. Hold and long press the Radioddity GD-88 [▲/▼]-key to turn on scan, and press any key to turn if off 1. Access the menu, press the [Menu]-key and rotate the [ENC] knob or use the [▲/▼]-keys in order to select Scan...
Page 85: Scan Mode
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (2) Channel Add → press the [Select]-key → select zone → select channel to be added → press (OK) to confirm your selection → return to previous level. Zone list → rotate the [ENC] knob or use the [▲/▼]-keys to choose the Zone →...
Page 86 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (1) Roam Mode → press the [Select]-key → rotate the [ENC] knob or use the [▲/▼]-keys to choose from one of the modes Auto, Manual or RSSI → press the [Select]-key to confirm the selection and return to the previous level.
Page 87 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (3) ConnectChk Timer → press the [Select]-key to display the current time value (second) → rotate the [ENC] knob or use the [▲/▼]-keys to adjust the desired connect check time → press the [OK]-key to confirm the modification →...
Page 88: Precautions For Roaming
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.4.5 Precautions for roaming 1. Before any roaming mode is selected, please make sure the ‘Scan List’ is preset in advance, otherwise the scan feature is unable to be activated.
Page 89: Local Set
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (2) Modify Name → press the [Select]-key → modify the channel name → press the [OK]-key to confirm and return to the previous level. 10.6 Local Set If the basic operation and functions of the menu are allowed by software to set and check, below functions are available thru accessing the Local Set menu.
Page 90: Led Indicator (Leds)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (2) Brightness → press the [Select]-key → rotate the [ENC] knob or use the [▲/▼]-keys to select desired brightness between 0 and 6 → press the [OK]- key to confirm → ‘Lightness is Set’ pops up on the screen → return to the previous level.
Page 91: Vox
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (4) VFO Mode → press the [Select]-key → VFO Mode is activated -> return to standby screen. Notes: This may also be accomplished by assigning a function key to [VFO] and pressing that function key. For more details, please check chapter 12.6 Preset Keys on page 140.
Page 92: Channel Sw
10.6.8 ABRepeat The Radioddity GD-88 comes with two totally independent VFOs. This allows the radio to also operate as a repeater. Crossband-, cross mode- as well as hybrid- and even digital-repeating are all possible. In general, there are two channel definitions required to use the repeating functionality.
Page 93: Semirepeatermode
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (1) A/B RepeatSw → Press the [Select]-key to switch repeater-mode On or Off for the currently selected channel → press the [Back]-key to return to the previous level (2) A/B ListenSw → Press the [Select]-key to turn monitoring of the currently selected channel On or Off →...
Page 94: Factory Reset
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Channel SemiRepeaterMode → press the [Select] key to switch ① SemiRepeaterMode on or off for the currently selected channel, press the [Back] key to return to the previous menu level Voice Sw →...
Page 95: Parameters
You can change your preferred "factory settings" with the Radioddity CPS at any time. Thus, this "Factory Reset" is not a real reset of the radio. For more details, please check chapter 11.3 Factory Reset on page 122.
Page 96: Slot/Repeat
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 2. Rotate the [ENC] knob or use the [▲/▼]-keys to choose Power and press the [Select]-key to choose between High Power and Low Power and press the [Select]-key to confirm.
Page 97: Sleep Mode
TimeSlot and Tx TimeSlot for those. 10.7.4 Sleep Mode As the Radioddity GD-88 is powered by a battery with limited capacity, it is advisable to make best use of the battery´s capacity. Therefore, the radio has special functionalities for saving power and lengthen the battery life.
Page 98: Encryption (Enc Level)
The encryption options for the Radioddity DB25-D, DB40-D and Radioddity GD- 88 are compatible with each other. Amateur radio networks do not allow to use encryption.
Page 99: Busy Channel Lockout (Bclo)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.7.8 Busy Channel Lockout (BCLO) 1. Access the menu, press the [Menu]-key and rotate the [ENC] knob or use the [▲/▼]-keys to choose Parameters and then press the [Select]-key to enter.
Page 100: Ctcss Phase Reverse (Ctcss Tail)
4. ‘Set OK!’ pops up on the screen and returns to the previous level. 10.8 Tone Set If It is allowed by the Radioddity CPS software, set and check the prompt tones by accessing the Tone Set menu. 10.8.1 Profiles 1.
Page 101: Key Tone (Keytone)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.8.2 Key Tone (KeyTone) 1. Access the menu, press the [Menu]-key and rotate the [ENC] knob or use the [▲/▼]-keys to choose Tone Set and then press the [Select]-key to enter.
Page 102: Private Call Ring Tone (Pcalltone)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.8.5 Private Call Ring Tone (PCallTone) 1. Access the menu, press the [Menu]-key and rotate the [ENC] knob or use the [▲/▼]-keys to choose Tone Set and then press the [Select]-key to enter.
Page 103: Fm Call Tone / Power On Tone
• GPS Map → press the [Select]-key to display the rough distance between the Radioddity DB25-D, DB40-D or GD-88 and other stations → rotate the [ENC] knob or use the [▲/▼]-keys to choose between GroupMap and Location → press the [Back]-key to return to the previous level.
Page 104: Fm Radio
[Back]-key to return to the previous level. • GPS Location → press the [Select]-key to display the location information (date, time, longitude, latitude, altitude, speed) of the Radioddity DB25-D, DB40-D or GD-88 → rotate the [ENC] knob or use the [▲/▼]-keys to check GPS / GL received satellites information and signal strength (white: empty signal, red: weak signal, light blue: available signal) →...
Page 105: Time
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 4. Press the [Back]-key to exit the FM radio mode and return to the previous level or press the [OK]-key to choose from the following options and procedures: (1) Save → press the [Select]-key to save the current FM radio channel.
Page 106: Dmr Dtmf
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 (4) Use GPS datetime → press the [Select]-key to turn date and time synchronization with received GPS data On or Off. Notes: Use GPS datetime is effective only when GPS function is on and successfully positioned.
Page 107: Aprs
If Spk+HeadSet (factory default) mode is selected, there is audio from the Radioddity GD-88 speaker and the plugged in headset accessory. If Headset mode is selected, there is no audio output from the Radioddity GD-88 speaker, but audio output from the inserted headset.
Page 108 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 keypad → press the [OK]-key to confirm → ‘Set OK!’ pops up on the screen and returns to the previous level. • Upload Path → press the [Select]-key to display the current Upload Path →...
Page 109: Bluetooth
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 10.9.7 BlueTooth 1. Access the menu, press the [Menu]-key and rotate the [ENC] knob or use the [▲/▼]-keys to choose Appendix and then press the [Select]-key to enter. 2. Rotate the [ENC] knob or use the [▲/▼]-keys to choose BlueTooth and press the [Select]-key to choose from the following options: (1) BlueTooth Sw →...
Page 110: Device Info
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 • Play → press the [Select] to play the selected recording → return to the previous level after finishing playing. • Delete → press the [Select]-key → ‘Are you sure?’ pops up on the screen →...
Page 111 Since version B49E.D64.EHRSAB.007 of the Radioddity GD-88 firmware, displayed information for the GD-88 differs between the A- and B-part. As the Radioddity DB25-D does not have two firmware parts that are independent from each other, the display for the DB25-D does not have such differentiation. DB25-D, DB40-D...
Page 112: Channel Edit
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 • ID press the [Select]-key to disable the decoding of received Talker → Alias data. Selecting this option will disable ‘Talker Alias ON’. Only data as available within the internal DMR ID database will be displayed.
Page 113 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 3. Press the [Select]-key to light up the cursor and enter the editing mode. 4. Rotate the [ENC] knob or use the [▲/▼]-keys to choose the desired value and press the [Select]-key to confirm and save.
Page 114: Prepare For Using The Cps
11.1 Install device driver This programming cable shipped with your Radioddity DB25-D, DB40-D or GD-88 adds an additional virtual COM-port to your system. It does include a small chip that converts signals to and from the USB-side into serial signals to and from the K1 / RJ45 style connector.
Page 115: Install Cps
The Radioddity DB40-D does not have such K-socket. That´s why the programming cable shipped with the Radioddity DB40-D does have a RJ45-plug which fits into the RJ45-socket at the left side of the radio. The Radioddity DB40-D may only be programmed via this RJ45 socket.
Page 116 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Click on the underlined ‘More info’ and continue by clicking on ‘Run anyway’. An additional confirmation dialog will follow, asking ‘Do you want to allow this app from an unknown publisher to make changes to your device?’. Confirm this dialog by clicking ‘Yes’.
Page 117 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Follow the standard installation procedure by mostly clicking on ‘Next’. After a while, the installation process finishes with © Radioddity 2023 page 117 of 252...
Page 118: Start Cps
Whenever changes to parameters have been made, the complete setting (‘codeplug’) must be written back to the radio. But we will come to that later. Notes: Codeplugs of different radio models, such as the Radioddity DB25-D, DB40-D or GD-88 are not exchangeable with each other due to different hardware specifications of the radio models.
Page 119: Special Functions
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 11.3.1 Special functions Some of the computers keyboard function keys have been assigned special functionality within the CPS. Function Turn Toolbar On/Off Turn Navigation bar On/Off Turn Status bar On/Off...
Page 120: Read Codeplug From Db25-D, Db40-D Or Gd-88
11.3.4 Read codeplug from DB25-D, DB40-D or GD-88 To read the current codeplug as stored on the radio, click on ‘Read’ within the toolbar to start the transfer of data from the Radioddity DB25-D, DB40-D or GD-88 to the PC.
Page 121: Safe Codeplug To File (Safe As)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 11.3.5 Safe codeplug to file (Safe as) If this is the first time you used the READ-function, we advise to first safe the data to a file of your choice, such as ‘Factory setting of my radio’. To do so, click on the ‘Save’...
Page 122: Open Existing Codeplug
The Radioddity DB25-D, DB40-D or GD-88 will display ‘Flash Write’ whilst data is been transferred from the CPS to the radio. As soon as all data has been transferred from the CPS to the Radioddity DB25-D, DB40-D or GD-88, the text ‘Flash Write’ will disappear.
Page 123 The radio will display ‘Write Factory’ whilst data is been transferred from the CPS to the Radioddity DB25-D, DB40-D or GD-88. As soon as all data has been transferred from the CPS to the Radioddity DB25-D, DB40-D or GD-88, the text ‘Write Factory’ will disappear.
Page 124: Using The Cps To Make Changes To Your Settings
Some of those menus are needed just once whilst others are needed more often. Our CPS (although it is the very same as for the Radioddity DB25-D, DB40-D and GD-88) will present additional parameters as soon as a Radioddity DB25-D, DB40-D or GD-88 configuration has been read.
Page 125: Serial Number
12.1.3 Model Number A string to indicate the radio model. Notes: You may find other radios looking similar to the Radioddity or GD-88 with even sharing the very same ‘Model Number’. Be careful as to not use any firmware or CPS with your Radioddity DB25-D, DB40-D or GD-88 that had not downloaded from our website as this may void any warranty.
Page 126: Basic Parameters
12.2 Basic Parameters Before starting your first QSO with your new Radioddity DB25-D, DB40-D or GD- 88, do not forget to setup your Radio ID (DMR ID) and your Radio Name (Call Sign). You find those parameters at the very top of the ‘Basic Parameters’.
Page 127: Busy Channel Lockout
12.2.7 Power-saving As the radio is operated by a battery with limited capacity, it is advisable to make best use of its capacity. Therefore, the Radioddity GD-88 has 3 additional parameters: ‘Power-saving’, ‘Power Saving Ratio’ and ‘Save power startup time’. In order to activate the power-saving function, also called ‘Sleep Mode’, it needs to...
Page 128: Power Saving Ratio
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.2.8 Power Saving Ratio Users can set the duty cycle (waketime : sleep time) of the power-saving mode. The smaller the ratio, the lower the power consumption. A higher ratio may result in a receiving delay or missed calls.
Page 129: End-Tone Types
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.2.11 End-tone types Users can enable this function according to the working environment and actual needs to set the end-tone type after [PTT] has been released, so as to facilitate the receiver to turn off its speaker in advance.
Page 130: Radio Id
Never ever use a DMR ID that is not assigned to you. 12.2.15 Rolling Code This feature is for companies using larger quantities of the Radioddity DB25-D, DB40-D or GD-88 to ease mass-setup of radios. If the checkbox is ticked the specified ‘Radio ID.’...
Page 131: Roaming
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.2.18 Roaming Roaming is similar to what you may be used with your smartphone when you move from one area to another area, thus leaving coverage of one repeater and entering coverage of another repeater.
Page 132: Roaming Mode
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.2.19 Roaming Mode Users can enable this function according to the working environment and their actual needs. options: Auto Once searching an available repeater from the scan list, the radio will lock to the current available repeater and pause auto roaming.
Page 133: Connect Check Timer
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 RSSI values: Maximum: - 90 dBm Minimum: - 125 dBm Recommendation : - 100 dBm Notes: The received signal strength (RSSI threshold value) is settable. If the RSSI mode is enabled and the searched repeater RSSI value is more than the...
Page 134: Record Set
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Connect Time: Maximum: Minimum: Recommendation: 12.2.24 Record Set Users can enable this function according to the working environment and their actual needs to set recording functions. Options: Off Close the recording.
Page 135: Prompt Tone
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.4 Prompt Tone You can turn on or off all sounds and prompt tones thru this parameter, or just set partial prompt tones of specific radio parameters. 12.4.1 Profiles Select a predefined audio profile.
Page 136: Group Call Tone
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.4.4 Group Call Tone Once receiving a group call, the Group Call Tone will be heard if this option is selected. Mode Options: off, 1~5 Default: 12.4.5 Roaming restart prompt Users can select the ‘Roaming restart prompt’...
Page 137: Low Battery Alert Tone
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.4.9 Low Battery Alert tone After setting it to ‘On’, a low battery alert will be heard when the battery voltage is less than a factory preset battery power level, which reminds you to charge or change the battery pack.
Page 138: Indicator
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.5 Indicator You can enable or disable some status indicators thru this menu. 12.5.1 All Indicators You can activate or disable all working status indicators of the radio thru this parameter.
Page 139: Rx Indicator
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.5.3 RX Indicator You can activate or disable the working status of the LED indicator for receiving a signal thru this parameter. Options: On LED indicator is on when the radio is receiving...
Page 140: Preset Keys (Programmable Function Keys)
Users can define the programmable function keys within this menu. Depending on the radio either P1…P7 (Radioddity DB25-D), PF1…PF4, P5…P8, Offhook, Onhook (Radioddity DB40-D) or P1…P4 (Radioddity GD-88) or are available to be assigned with special functions. 12.6.1 Long Press Duration You can trigger different functions depending on Long Press or Short Press of a programmable function key.
Page 141: Available Function For The Preset Keys
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.6.2 Available Function for the Preset Keys Type Feature Description Undefined Preset Key is not assigned to any special function High /Low Allows users to switch between high power and low power...
Page 142 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Type Feature Description To turn GPS On or Off Record To turn recording On or Off On/Off Mandown To turn the Mandown function On or Off On/Off Relay To turn the Repeater-mode On or Off...
Page 143: Mic Gain
MIC Gain 2 to be in its ‘On‘-position. MIC Gain 2 refers to the Speaker- Microphone that comes with the DB25-D as well as with the DB40-D and is connected via the front RJ45-Socket or the built-in microphone of the GD-88.
Page 144: Mic Gain 2
12.7.4 MIC Gain 2 The transmitted audio of the Speaker-Microphone that´s connected to the front RJ45-socket of the Radioddity DB25-D, DB40-D or the built-in microphone of the GD-88 2will be amplified according to value defined by ‘MIC Gain 2’. Option:...
Page 145 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 special characters. Users can access the function through the Message menu function. © Radioddity 2023 page 145 of 252...
Page 146: Dmr Service
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.9 DMR Service Users are allowed to turn on or off the advanced services through DMR Services, if required. 12.9.1 Remote monitor duration By programming, users can program how long the radio will keep the microphone and transmitter on after it receives the remote monitor command from another radio.
Page 147: Remote Monitor Decode
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.9.2 Remote Monitor Decode It allows the radio to receive and deal with the ‘Remote Monitor’ command. The radio will activate the microphone and transmitter and send the audio activities of the surroundings for the specific time programmed after receiving the ‘Remote...
Page 148: Radio Revive
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.9.5 Radio Revive It allows the radio to receive and deal with the ‘Radio Revive’ command, and activate itself to be used again. Options: On Allow and accept to be revived by other radios...
Page 149: Private Call Hang Time
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.9.8 Private Call Hang Time The free time for Talk Around Private Call after releasing [PTT]-key, which can prevent more calling when you press [PTT] to transmit every time. In this period, as the channel is free, other radios can still transmit.
Page 150: Dtmf Volume
Notes: The function may be assigned to one of the function keys. For more details, please check chapter 12.6 Preset Keys on page 140. 12.9.15 GPS interval Once the GPS feature is activated, the Radioddity DB25-D, DB40-D or GD-88 will send the GPS data whenever the ‘GPS interval’ has elapsed. Options: Max: 250 min...
Page 151: Gps Channel
5 min 12.9.19 Mandown Angle By setting this parameter, when the Angle between the falling and the horizontal surface of the Radioddity GD-88 is less than this parameter, an alarm will be given. Recommended: 60° Notes: When the radio is perpendicular to the ground, it is 90°.
Page 152: Pre-Alarm Time
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.9.22 Pre-alarm Time This option and its value are not applicable for the Radioddity DB25-D, DB40-D or the GD-88. Please ignore it. 12.9.23 Response transmission interrupt This option and its value are not applicable for the Radioddity DB25-D, DB40-D or the GD-88.
Page 153: Analog Aprs
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.1 Analog APRS For Analog APRS data, check which frequency and further parameters are to be used for your region. Within the CPS, those settings required for analog APRS are specified within the following block: Notes: Analog APRS may be assigned to a channel as ‘APRS(A)’.
Page 154: Aprs Auto Tx Intervals[S]
Recommended: 12.10.5 Beacon If the Radioddity DB25-D or DB40-D is mainly used as a radio station at home, we advise to not use GPS but set the GPS-data within the APRS protocol to the fixed location as specified with the parameters ‘Latitude’ and ‘Longitude’.
Page 155: Latitude (Degrees)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.6 Latitude (degrees) Latitude and Longitude define an exact position on earth. The parameters ‘Latitude’ and ‘Longitude’ are used when ‘Fixed Location’ had been selected for the APRS functionality. To get the required numbers for latitude and longitude you may want to use a service such as https://www.latlong.net/...
Page 156: Tx Freq [Mhz]
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.8 TX Freq [MHz] The frequency specified with this parameter for analog APRS is totally independent of the selected channels frequency. The APRS beacon is transmitted using 1200 Baud AFSK. The frequency data within the following table is subject to change without prior notice.
Page 157: Transmit Delay
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.10 Transmit Delay The two parameters ‘Transmit Delay’ and ‘Prewave Time’ are responsible for the delay between automatic [PTT] activation (for analog APRS) and the actual transmission of the APRS beacon.
Page 158: Destn Ssid
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.14 Destn SSID The specified digit will be appended to the destination call sign Value: Maximum: Minimum: Increment: Default: 12.10.15 Destn Call Sign This parameter is required to specify the destination call sign and may not be left empty for analog APRS.
Page 159: Your Call Sign
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.17 Your Call Sign This parameter is also mandatory for analog APRS as it does specify your own call sign. Default: <empty> 12.10.18 APRS Symbol Table Initially APRS supported just 192 different symbols. This has recently been enhanced to several thousands.
Page 160 APRS service pages such as https://aprs.fi. The following table list the most used icons and their corresponding ‘APRS Symbol Table’, ‘APRS Map Icon’ and ‘SSID’ that are applicable for your DB25-D, DB40-D and GD-88.
Page 161: Aprs Signal Path
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.20 APRS Signal Path This parameter defines the path your APRS beacon packets should take. Recommended: WIDE1-1WIDE2-1 Notes: There is no space or ‘,’ between ‘WIDE1-1’ and ‘WIDE2-1’. This parameter is only relevant for analog APRS 12.10.21...
Page 162: Aprs Tg
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.10.24 APRS TG In digital APRS the APRS data will be transmitted to the TalkGroup, specified by this parameter. The TalkGroup is depending on the network that is used by the defined APRS channel.
Page 163: Call Type
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Hints: In Europe it is advised to use TimeSlot 2 for transmitting digital APRS data. Default: Current Slot Notes: The current firmware only allows digital APRS reporting on the same timeslot as the current channel.
Page 164: Contacts
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.12 Contacts 12.12.1 Contact list It is convenient for users to create, modify, edit, add and delete digital Contacts in the current channel, or to copy ham contacts or Ham groups to the contact list, which is convenient for you to call an associated contact or TalkGroup on a specified channel for communication.
Page 165 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Call Type # Call Type Group call Private call All call No-address call RawData Define Data SPDATA Normally only Call Type 1 (Group call) and Call Type 2 (Private call) are used. If you need to update the imported contacts CSV file, you need to re-import the updated digital contacts CSV file to replace the previously imported contacts.
Page 166: Ham Contacts
CSV file of digital contacts. For your convenience we have included a sample file ‘Ham contacts_ALL_20200505193301 max 200000.csv ‘ within the installation directory of the Radioddity CPS. This © Radioddity 2023 page 166 of 252...
Page 167 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 sample file has more than 160000 records with their ‘DMR ID’, ‘Call sign’, ‘Full name’, ‘City’, ‘State/Province’ and ‘Country’. If you need to update the imported contacts CSV file, you need to re-import the updated digital contacts CSV file to replace the previously imported contacts.
Page 168: Ham Groups
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 When you have imported the digital contacts CSV file, you can select your desired friend contacts from it, and then tick ‘’ in the ‘’ box next to serial number. After all the required contacts have been selected, press the ‘copy’...
Page 169 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 If you press the ‘import’ button, you will be directed to the default file path of the system in order to directly import a CSV file of Ham groups. If you need to update the imported ‘Ham group’...
Page 170: Digital Alarm List
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Notes: This function only applies to the digital ‘Group call’ type. Getting the Ham groups into the radio is a 2-step process, Ham groups from a file to the CPS the Ham groups from the CPS to the radio 12.13...
Page 171: Scan List
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Notes: When Scanning is turned on and VFO A is currently selected, the radio will no longer monitor VFO B. When Scanning is turned on and VFO B is currently selected, the radio will no longer monitor VFO A.
Page 172: Scan Tx Mode
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 12.14.3 Scan TX Mode During scanning process, it is allowed to initiate a call or reply back on the current channel by pressing the [PTT]-key when a scanned signal disappeared or scanning stops.
Page 173: Rx Group
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Click on one of the members within the ‘Optional Channels’ window and press the button ‘+ Add’ to add that member from the ‘Optional Channels’ window to the ‘Selected Channels’ window.
Page 174: Zone [Channel]
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 mode is not activated, you will not be able to hear any activity on the currently selected channel. If the currently active TalkGroup is a member of the ‘RX Group’ that´s assigned to the selected channel, you will hear all activity that´s going on for the TalkGroups...
Page 175: Setup Of Channels
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13 Setup of channels A channel is defined by several parameters. Some of them apply both, to analog as well as digital channels, others apply to analog or digital channels only. This chapter do explain all those parameters in more detail.
Page 176: Add Channels
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13.3 Add channels To manually add one or more records (‘channels’), first specify the total number of records you want to add within the field labeled ‘ADD QTY’ before you push the button ‘Add’.
Page 177: Rx Freq
13.7 RX Freq Users can set the channels receive frequency (in MHz). The possible frequency depends on the available frequency ranges of the Radioddity DB25-D, DB40-D or GD-88. In ‘Digital’ mode, the Radioddity DB25-D, DB40-D and GD-88 do not support simplex DMR Tier 1 operation with different TX and RX frequency.
Page 178: Prompt
Notes: This parameter is only available in digital mode. 13.14 RX TS The Radioddity DB25-D, DB40-D and GD-88 are all based on TDMA technology and can divide a 12.5kHz channel into two alternate TimeSlots. When operating a digital repeater or duplex-hotspot with the Radioddity DB25-D, DB40-D or GD-88, normally the digital repeater does have a TX-frequency different to its RX-frequency and uses DMR Tier 2 for transmission.
Page 179: Tx Ts
Most Ham operators nowadays do have their own personal hotspot. Some of those hotspots do support ‘full duplex’, others only support ‘simplex’ operation. In order to successfully use a simplex hotspot with your Radioddity DB25-D, DB40-D or Radioddity GD-88, the digital channel definition needs to be different than for duplex repeaters or duplex hotspots.
Page 180: Tx Cc (Color Code)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Option range: Maximum: 15 Minimum: Increment: 1 Default: 13.17 TX CC (Color Code) Users can assign a color code for a TX channel. The channel Color Code can be same or different, but a repeater can have only one Color Code.
Page 181: Rx Group
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Default: Impolite 13.20 RX Group In order to be able to receive a group call within the channel, a ‘RX Group’ should be defined and assigned to the channel. Only those groups, that are listed with their Digital Contact (TalkGroup ID) within the assigned ‘RX Group’...
Page 182: Eas (Emergency Alarm System)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 If this parameter is set to ‘Off’, a call on the channel will not be possible, making it a RX-only channel. Only those Contacts, defined within the ‘Contact list’ may be selected.
Page 183: Crossband Digital To Analog
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Operation: Select one of those two channels for VFO A and select the other channel as VFO B. The analog signal as received on the selected input channel will be repeated on the selected output channel.
Page 184 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 The Radioddity DB40-D/GD-88 will digitally receive on VFO-A (144.100 MHz), TS 1, CC1 and analog transmit the received signal on VFO-B (433.100 MHz), acting as a digital to analog crossband-repeater.
Page 185: Crossband Analog To Digital
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13.26.3 Crossband analog to digital Input channel: Set one channel for Ch Mode ‘A&D, TX-D’ and set it for Relay mode ‘Only RX’ or ‘Rx and TX’. The frequency specified for RX will be used for cross repeating the analog signal received.
Page 186: Crossband/Crossmode Digital/Analog To Analog
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13.26.4 Crossband/Crossmode digital/analog to analog Input channel: Set one channel for Ch Mode ‘A&D, TX-A’ and set it for Relay mode ‘Only RX’ or ‘Rx and TX’. The frequency specified for RX will be used for either cross repeating a digital or an analog signal received.
Page 187: Crossband/Crossmode Analog/Digital To Digital
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13.26.5 Crossband/Crossmode analog/digital to digital Input channel: Set one channel for Ch Mode ‘A&D, TX-D’ and set it for Relay mode ‘Only RX’ or ‘Rx and TX’. The frequency specified for RX will be used for either cross repeating a digital or an analog signal received.
Page 188: Crossband Digital To Digital
Sample settings (only relevant parts shown): The Radioddity DB40-D/GD-88 will receive digital on VFO-A (144.100 MHz), CC 1, TS 1 and digital transmit the received signal on VFO-B (433.100 MHz) with the CC, TS and Contact as specified acting as a digital to digital crossband-repeater.
Page 189: Same Frequency Repeater Digital To Digital
(only those parameters are shown that are of relevance). Keep in mind that the Radioddity DB25-D is not capable of acting as a repeater using SFR. But of course it can be a station within a Radioddity DB40-D/GD-88 based SFR mesh-network.
Page 190: Bandwidth
13.28 CTCSS sub audio and DCS signaling For analog channels the Radioddity DB25-D, DB40-D and GD-88 support a total of 51 CTCSS (Continuous Tone Coded Sub audio Squelch) frequencies and 103 normal DCS codes and additional 103 inverted DCS codes. CTCSS is often also called PL tone (PL®...
Page 191: Supported Dcs Codes
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13.28.2 Supported DCS codes D017N D114N D205N D306N D411N D503N D606N D703N D023N D115N D212N D311N D412N D506N D612N D712N D025N D116N D223N D315N D413N D516N D624N D723N D026N D122N...
Page 192: Rx Sq
DB40-D or GD-88 is consistent with the CTCSS frequency of the transmitting radio, squelch will be opened. Only if the DCS decoding value of the DB25-D, DB40-D or GD-88 is consistent with the DCS encoding of the transmitting radio, squelch will be opened on the DB25-D, DB40-D or GD-88.
Page 193: Tx Qd/Dqt (Tx Ctcss/Dcs)
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Squelch will be opened regardless of the CTCSS, DCS or DCS-I values received from the transmitting radio. Default: 13.32 TX QD/DQT (TX CTCSS/DCS) Depending on the option selected as ‘TX SQ’, this is the place to specify the CTCSS frequency or DCS/DCS-I code.
Page 194: Firmware Update
To do so: Make sure that your Radioddity DB25-D or Radioddity DB40-D is connected to a constant 12V power supply. If you are going to update a Radioddity GD-88, make sure that the battery of your Radioddity GD-88 is fully charged.
Page 195 The status-LED of your Radioddity DB25-D or Radioddity GD-88 will constantly light up red. The Radioddity DB40-D does not have such status-LED. On the Radioddity DB25-D, the display will stay blank and backlight will be on, regardless of your normal settings. On the Radioddity GD-88/DB40-D a special screen will be displayed with either ‘IAP_A’...
Page 196 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 13. If the IAP-updater can connect to your Radioddity DB25-D, DB40-D or GD-88, it will output ‘IAP Successfully’. If it isn´t able to connect to the radio, it will stay on ‘CommPort:COMx’ (where ‘x’ represents the selected virtual COM-port number of your programming cable ).
Page 197 Radioddity DB25-D, DB40-D or GD-88 may result in a loss of any warranty. 16. Whereas a firmware update for the Radioddity DB25-D consists of just one single file, the Radioddity DB40-D and Radioddity GD-88 both do require two separate files, one for each independent VFO (A and B).
Page 198 Radioddity GD-88 during update of ‘IAP_B’ but only on the IAP update program. 19. As soon as the update has finished on the Radioddity DB25-D or DB40-D, the radio will automatically shut down, whereas the Radioddity GD-88 will state the following on its screen ‘Status: Rec Done!’.
Page 199: White Or Scrambled Screen After Firmware Update
14.4 White or scrambled screen after firmware update It might happen, that your Radioddity GD-88 - after applying a firmware update - does show a white or even a scrambled screen when turned on instead of the normal startup logo. Don´t worry, this is due to the fact that we do have slightly different Radioddity GD-88 hardware revisions out in the field that are covered by the very same firmware.
Page 200: Perform Flash Update
Choose the virtual COM-port that does represent your programming cable Click on ‘Open’ If the IAP-updater can connect to your Radioddity DB25-D, DB40-D or GD-88, it will output ‘IAP Successfully’. If it isn´t able to connect to the radio, it will stay on ‘CommPort:COMx’...
Page 201 Do not use flash files intended for other radios, even if those radios may be looking like the Radioddity DB25-D, DB40-D or GD-88. Using files not intended to be put on a Radioddity DB25-D, DB40-D or GD-88 may result in a loss of any warranty.
Page 202 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Whilst updating the radio you see an ascending counter on the radio. Do not press any key on the radio, do not remove power, just wait until the radio has finished the update process and returns back to normal idle state of the display.
Page 203: Release Notes
Only take those firmware as found on our support pages. Before performing an update, double check that the firmware on our support page has not been withdrawn. All Firmware updates for the Radioddity DB25-D, DB40-D and GD-88 do come with ‘Release Notes’.
Page 204: Firmware Release Notes For Db25-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.1 Firmware Release notes for DB25-D 15.1.1 DB25-D firmware as of July 6 , 2023 revision Changes released • DMR ID data now properly displayed • TalkerAlias-data now displayed correctly •...
Page 205: Db25-D Firmware As Of November 23 Rd , 2022
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.1.2 DB25-D firmware as of November 23 , 2022 revision Changes released • DMR ID data now properly displayed (no more display of wrong DMR database data) • Assignment of 1450 Hz Pilot tone now fixed (also requires at least CPS DMR CPS_DRS [9.2.16])
Page 206: Db25-D Firmware As Of December 11 Th , 2021
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.1.4 DB25-D firmware as of December 11 , 2021 revision Changes released • Additional icon whenever promiscuous mode is active • Memory assignment for channels and zones now handled dynamically •...
Page 207: Firmware Release Notes For Db40-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.2 Firmware Release notes for DB40-D 15.2.1 Initial DB40-D firmware as of August 5 , 2023 revision Changes released 959E.E6T.EBPSAB.007 Aug 26 2023 14.42.52 (A) This has been the initial release 2023-08-26 B49C.E6T.EORNAB.006...
Page 208: Firmware Release Notes For Gd-88
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.3 Firmware Release notes for GD-88 15.3.1 GD-88 firmware as of September 12 , 2023 revision Changes released Remark: The FLASH-file is written to the radio using IAP with the radio in normal operation-mode.
Page 209: Firmware As Of March 30 Th , 2023
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.3.2 GD-88 firmware as of March 30 , 2023 revision Changes released • ‘VFO-B Unprogrammed’-bug fixed • TX of Analog DTMF now fully supported • TalkerAlias-data now displayed correctly B49E.D6*.EOPSAB.013 •...
Page 210: Firmware As Of November 21 , 2022
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.3.3 GD-88 firmware as of November 21 , 2022 revision Changes released • DMR ID data now properly B49E.D66.EHPSAB.010 displayed (no more display of 2022-11-19 (A) wrong DMR database data) •...
Page 211: Cps Release Notes
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.4 CPS Release notes The following table lists the details that had been changed with new versions of the CPS. 15.4.1 CPS software as of August 1 , 2023 revision...
Page 212: Cps Software As Of July 1 St , 2022
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.4.4 CPS software as of July 1 , 2022 revision Changes released • Functionality for full support of Radioddity GD-88 added • If radio APRS beacon is set for ‘Fixed Location’, specified latitude and...
Page 213: Initial Cps Software As Of June 1 St , 2021
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 15.4.7 Initial CPS software as of June 1 , 2021 revision Changes released CPS 3.1 This has been the initial release 2021-06-01 DMR CPS_DRS [9.1.178] © Radioddity 2023 page 213 of 252...
Page 214: Quickstart For Common Use Cases
Yes, this extended manual is quite comprehensive, but it is intended to make it easier for you to get the best results out of your Radioddity DB25-D, DB40-D, and GD-88.
Page 215: Duplex Analog Fm Operation With A Local Analog Fm-Repeater
9. Set APRS to ‘Off’ for now Write your settings to the radio. Do not forget to switch to Zone ‘simplex FM’ and select Channel ‘FM simplex’ at your Radioddity DB25-D, DB40-D or GD-88. Now you are ready for your very first simplex analog FM QSO.
Page 216: Analog Fm Operation Including Analog Aprs
Using analog APRS does require a bunch of settings to be made within the APRS menu of the Radioddity CPS. For initial testing, we advise to use a beacon with a fixed location (1) representing the latitude and longitude (2) of your current QTH.
Page 217: Simplex Digital Dmr Operation With Other Station
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Of course, also define your call sign (4) to be used for APRS-reporting. The defined SSID will automatically be added to your call sign. For details on the other parameters, please refer to the chapter on APRS within this addendum.
Page 218: Simplex Digital Dmr Operation With A Single-Hat Hotspot
Write your settings to the radio. Do not forget to switch to Zone ‘simplexDMR’ and select channel ‘DMRsimplex’ at your Radioddity DB25-D, DB40-D or GD-88. Now you are ready for your very first simplex digital DMR QSO with the selected station.
Page 219: Duplex Digital Dmr Operation With A Dual-Hat Hotspot
Write your settings to the radio. Do not forget to switch to Zone ‘simplex HS’ and select channel ‘HS TG 99’ at your Radioddity DB25-D, DB40-D or GD-88. Now you are ready for your very first simplex digital DMR QSO using your hotspot.
Page 220 Write your settings to the radio. Do not forget to switch to Zone ‘My Hotspot’ and select channel ‘HS WW’ at your Radioddity DB25-D, DB40-D or GD-88. Now you are ready for your very first digital DMR QSO via your duplex hotspot.
Page 221: Digital Dmr Operation With Digital Repeater
Write your settings to the radio. Do not forget to switch to Zone ‘Duplex HS’ and select channel ‘HS WW’ at your Radioddity DB25-D, DB40-D or GD-88. Now you are ready for your very first digital DMR QSO via your duplex hotspot.
Page 222 Write your settings to the radio. Do not forget to switch to Zone ‘My Hotspot’ and select channel ‘HS WW’ at your Radioddity DB25-D, DB40-D or GD-88. Now you are ready for your very first digital DMR QSO via your duplex hotspot.
Page 223: Connectivity
PL 259 Radioddity GD-88 Do not mount an antenna (without a cable) directly to the Radioddity DB25-D or Radioddity DB40-D as radiated HF may have a negative impact on the radio´s operation and may also influence your car’s electronics. Make sure the antenna is matched for 2m &...
Page 224: Gps Antenna Connector Of Db25-D And Db40-D
17.5 K1 connector of DB25-D and GD-88 At the left side of the Radioddity DB25-D and on the right side of the Radioddity GD-88 there is a K1 socket with the following pin assignment: Signal name PTT / Radio RXD (Data to Radio) 3.5 mm sleeve...
Page 225: Technical Specifications
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Signal name RJ45 Color Speaker-Microphone* Power Off (if connected to GND) Grey n.c. PTT/Radio RXD (Data to Radio) Blue Microphone Audio White Cable Shield / analog ground Silver Radio TXD (Data from Radio) Yellow n.c.
Page 226: Receiver Of The Db25-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 18.2 Receiver of the DB25-D Parameter Frequency Range 136…174 MHz 400…480 MHz Channel Spacing 12.5 kHz / 25 kHz Operating Bandwidth ≤±5 kHz @ 12.5 kHz / ≤±7 kHz @ 25 kHz Frequency stability (-20 °C …...
Page 227: General Specifications Of The Db40-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 18.4 General specifications of the DB40-D Parameter Frequency 136…174 MHz 400…480 MHz Type Dual band, Dual standby, Dual mode TDMA 2-TimeSlot technology Digital mode (Tier 1 and Tier 2) Zones...
Page 228: Transmitter Of The Db40-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 18.6 Transmitter of the DB40-D Parameter Frequency Range 136…174 MHz 400…480 MHz Channel Spacing 12.5 kHz / 25 kHz Frequency stability (-20°C … +25°C) ± 1.5 ppm Low Power 25 W...
Page 229: General Specifications Of The Gd-88
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 18.7 General specifications of the GD-88 Parameter Frequency 136…174 MHz 400…470 MHz Dual band, Dual standby, Dual mode, Type Dual VFO TDMA 2-TimeSlot technology Digital mode (Tier 1 and Tier 2) Digital vocoder AMBE+2™...
Page 230: Transmitter Of The Gd-88
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 18.9 Transmitter of the GD-88 Parameter Frequency Range 136…174 MHz 400…480 MHz Frequency stability (-30°C … +25°C) ± 1.5 ppm Low Power 2.5 W 2.5 W High Power 7.0 W 7.0 W...
Page 231: Certification
European regulations. This is attested by the following certificates. 19.1 CE certificate for DB25-D Below you find a copy of the CE certificate for our Radioddity DB25-D mobile radio. © Radioddity 2023 page 231 of 252...
Page 232: Fcc Part 90 Approval For Db25-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 19.2 FCC part 90 approval for DB25-D Below you find a copy of the FCC part 90 approval for our Radioddity DB25-D mobile radio. © Radioddity 2023 page 232 of 252...
Page 233: Ce Certificate For Db40-D
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 19.3 CE certificate for DB40-D Below you find a copy of the CE certificate for our Radioddity DB40-D mobile radio. © Radioddity 2023 page 233 of 252...
Page 239: Ce Certificate For Gd-88
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 19.4 CE certificate for GD-88 Below you find a copy of the CE certificate for our Radioddity GD-88 handheld radio. © Radioddity 2023 page 239 of 252...
Page 243: Fcc Part 90 Approval For Gd-88
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 19.5 FCC part 90 approval for GD-88 Below you find a copy of the FCC part 90 approval for our Radioddity GD-88 handheld radio. © Radioddity 2023 page 243 of 252...
Page 245: Common Problems And How To Solve Them
Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 20 Common problems and how to solve them Problem Solution Radio fails to power on Check power supply, check inline fuse of power cable GD-88 check that the battery is fully charged...
Page 246 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Problem Solution Analog APRS does not work Analog APRS currently only works if an analog channel has been selected, the proper analog APRS settings have been applied and an analog iGate is within RF-coverage.
Page 247 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Problem Solution Cannot hear the local DMR- For each TalkGroup that you do want to repeater operate, you will need a separate channel. Each digital channel should have a reference to a...
Page 248 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Problem Solution When editing the When editing parameters using the radio parameters of the VFO menus, the changes do apply to those VFO marked with PTT the that´s marked with ‘CTRL’. Make sure to select parameters of the other the proper VFO for ‘CTRL’...
Page 249 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Problem Solution When updating IAP-B on my The DB40-D and GD-88 do have two CPUs: One DB40-D / GD-88 the counter for VFO-A and the other one for VFO-B. When...
Page 250 Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0 Problem Solution After doing an update a Repeat the update-procedure and make sure black screen is shown that you do select the proper IAP_A and IAP_B when power cycling the...
Page 251: Where To Find Support Material
→ Support → Radioddity → click on the appropriate radio model As for the Radioddity DB25-D the resulting support page will look similar to the following: As soon as any new file becomes available (such as firmware updates, updated manuals or others), it will be published within our support area.
Page 252 In general, the software- and firmware-updates for your Radioddity DB25-D, Radioddity DB40-D and Radioddity GD-88 are free of charge. Using a CPS or a firmware not originating from Radioddity may void your warranty. Thank You for Shopping at Radioddity! FIND TUTORIALS, SUPPORT AND MORE AT: https://www.radioddity.com/...

This manual is also suitable for:

Db40-d Gd-88

Radioddity DB25-D Extended Manual

Quick Links

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Radioddity DB25-D

Summary of Contents for Radioddity DB25-D