Table of Contents

Advertisement

Quick Links

APX TWO-WAY RADIOS
APX 900 Model 3 User
Guide
AUGUST 2023
*MN003441A01*
MN003441A01-AP
©
2023 Motorola Solutions, Inc. All rights reserved

Advertisement

Table of Contents
loading

Summary of Contents for Motorola APX 900

  • Page 1 APX TWO-WAY RADIOS APX 900 Model 3 User Guide AUGUST 2023 *MN003441A01* MN003441A01-AP © 2023 Motorola Solutions, Inc. All rights reserved...
  • Page 2: Intellectual Property And Regulatory Notices

    License Rights The purchase of Motorola Solutions products shall not be deemed to grant either directly or by implication, estoppel or otherwise, any license under the copyrights, patents or patent applications of Motorola Solutions, except for the normal non-exclusive, royalty-free license to use that arises by operation of law in the sale of a product.
  • Page 3: Table Of Contents

    MN003441A01-AP Contents Contents Intellectual Property and Regulatory Notices............2 List of Tables......................11 Software Version.......................12 Chapter 1: Read Me First..................13 1.1 Notations Used in This Manual....................13 1.2 Radio Care..........................13 1.2.1 Cleaning Your Radio....................15 1.2.2 Cleaning the External Surface of the Radio.............15 1.2.3 Radio Service and Repair..................
  • Page 4 MN003441A01-AP Contents 4.7 Phone Call Displays and Alerts..................... 36 4.8 Display Color Change On Channel..................36 Chapter 5: General Radio Operation..............37 5.1 Selecting a Zone........................37 5.2 Selecting a Radio Channel....................37 5.3 Selecting a Channel by using Channel Search Button............38 5.4 Mode Select Feature......................
  • Page 5 MN003441A01-AP Contents 7.1.5 Dynamic Regrouping (Trunking Only) ..............49 7.1.5.1 Classification of Regrouped Radios............50 7.1.5.2 Requesting a Reprogram (Trunking Only)..........50 7.1.6 Dynamic Zone Programming................... 50 7.1.6.1 Entering the Dynamic Zone to Select a Dynamic Channel......50 7.1.6.2 Saving a Channel in the Dynamic Zone from List Selection...... 51 7.1.6.3 Saving a Channel in the Dynamic Zone from Channel Name....51 7.1.6.4 Deleting a Channel in the Dynamic Zone...........52 7.1.7 Zone-to-Zone Cloning....................
  • Page 6 MN003441A01-AP Contents 7.7.3 Instant Recall......................64 7.7.3.1 Saving and Playback Calls.................64 7.8 In-Call User Alert........................65 7.9 Quik Call II..........................66 7.9.1 Initiating Quick Call II Transmissions............... 66 7.10 Emergency Operation......................66 7.10.1 Special Considerations for Emergency Operation..........67 7.10.2 Emergency Keep-Alive..................67 7.10.3 Exiting Emergency Operation................
  • Page 7 MN003441A01-AP Contents 7.14.4.5 Appending a Priority Status and a Reply Request to a Text Message..80 7.14.4.6 Removing a Priority Status and a Reply Request from a Text Message......................81 7.14.4.7 Receiving a Text Message...............81 7.14.4.8 Viewing a Text Message from the Inbox..........81 7.14.4.9 Replying to a Received Text Message.............82 7.14.4.10 Accessing the Drafts Folder..............
  • Page 8 MN003441A01-AP Contents 7.19.8 Editing the Alias of a Waypoint................97 7.19.9 Editing the Coordinates of a Waypoint..............98 7.19.10 Deleting a Single Saved Waypoint...............99 7.19.11 Deleting All Saved Waypoints................99 7.19.12 Measuring the Distance and Bearing from a Saved Waypoint......99 7.19.13 Location Feature in Emergency Mode............... 100 7.20 Mission Critical Geofence (ASTRO 25 Trunking)..............
  • Page 9 MN003441A01-AP Contents 7.26 Utilities..........................114 7.26.1 Selecting the Power Level................... 114 7.26.2 Selecting a Radio Profile..................114 7.26.3 Enabling and Disabling the Radio Alias............... 115 7.26.4 Selecting the Audio Speaker................115 7.26.5 Controlling the Display Backlight................. 116 7.26.6 Locking and Unlocking the Keypad and Controls..........116 7.26.7 Turning the Controls and Keypad Buttons Tones On or Off........
  • Page 10 Declaration of Compliance for the Use of Distress and Safety Frequencies......134 Technical Parameters for Interfacing External Data Sources............134 Limited Warranty.....................135 MOTOROLA SOLUTIONS COMMUNICATION PRODUCTS........... 135 I. WHAT THIS WARRANTY COVERS AND FOR HOW LONG:..........135 II. GENERAL PROVISIONS:..................... 136 III.
  • Page 11: List Of Tables

    MN003441A01-AP List of Tables List of Tables Table 1: Text Entry Modes........................21 Table 2: Keypad Characters........................22 Table 3: LED Indications........................28 Table 4: TMS Status Icons........................31 Table 5: Call Type Icons.........................31 Table 6: Emergency Operation Scenarios....................67 Table 7: Parameter Editing Keys......................125 Table 8: VHF Marine Channel List.......................
  • Page 12: Software Version

    MN003441A01-AP Software Version Software Version All the features described in the following sections are supported by the software version R31.00.00 or later. Accessing the Radio Information on page 121 to determine the software version of your radio. Contact your system administrator for more details of all the supported features.
  • Page 13: Chapter 1: Read Me First

    MN003441A01-AP Read Me First Chapter 1 Read Me First This User Guide covers the basic operation of the radio. However, your dealer or system administrator may have customized your radio for your specific needs. Check with your dealer or system administrator for more information.
  • Page 14 MN003441A01-AP Chapter 1 : Read Me First • Never obstruct or cover the vent port, even with a label. • Ensure that no oily substances come in contact with the vent port. • If water is observed on the vent port of radio casting, dry the vent port. Otherwise, the water blocks the vent port and prevent pressure equalizing and could affect the overall performance of the radio.
  • Page 15: Cleaning Your Radio

    Radio Service and Repair Proper repair and maintenance procedures ensure efficient operation and long-life of this radio. A Motorola Solutions maintenance agreement provides expert service to keep the radio and all other communication equipment in perfect operating condition. A nationwide service organization is provided by Motorola Solutions to support maintenance services.
  • Page 16: What Your Dealer Or System Administrator Can Tell You

    MN003441A01-AP Chapter 1 : Read Me First What Your Dealer or System Administrator Can Tell You If the radio is to be operated in extreme temperatures (less than -30 °C or more than +60 °C), check with your system administrator for the correct radio settings. You can consult your dealer or system administrator about the following: •...
  • Page 17: Chapter 2: Getting Started

    NOTE: When charging a battery attached to a radio, the radio must be turned off. Procedure: To charge the battery, place the battery (with or without the radio) in a Motorola Solutions- approved charger. The LED on the charger indicates the charging progress. For more information, see the Charger User Guide.
  • Page 18: Attaching The Antenna

    MN003441A01-AP Chapter 2 : Getting Started 2 To remove the battery, turn the radio off. Lift the latch at the bottom of the radio, then slide the battery out from the radio. NOTE: Radio supports revision B and above for PMNN4491 battery. Check with your dealer or system administrator for more information.
  • Page 19: Turning On The Radio

    Procedure: 1 Rotate the On/Off/Volume Control Knob clockwise until you hear a click. • If the power-up test is successful, the display shows Motorola Solutions logo momentarily, followed by the Home screen and the Codeplug Alias. • If the power-up test is unsuccessful, you see Error XX/YY (XX/YY is an alphanumeric code).
  • Page 20: Chapter 3: Radio Controls

    MN003441A01-AP Chapter 3 : Radio Controls Chapter 3 Radio Controls This chapter explains the buttons and functions to control the radio. Radio Parts and Controls 16-Position Select Knob This knob is usually programmed for channel selection. On/Off/Volume Control Knob Rotate clockwise until you hear a click to turn on the radio. Rotate counterclockwise until you hear a click to turn off the radio.
  • Page 21: Text Entry Icons

    MN003441A01-AP Chapter 3 : Radio Controls LED Indicator Top Side (Select) Button Use this programmable button to access a programmed function or enable or disable a feature. Microphone Push-to-Talk (PTT) Button Press and hold to talk in simplex calls or to initiate a group call, release it to listen. Side Button 1 Use this programmable button to access a programmed function or enable or disable a feature.
  • Page 22: Table 2: Keypad Characters

    MN003441A01-AP Chapter 3 : Radio Controls Icon Description The text entry is in numeric mode. The first character of the text entry is capitalized. The text entry is in normal text mode. The text entry is in uppercase mode. The text entry is in lowercase mode. The text entry is in lowercase with predicted words shown at the bottom of the screen.
  • Page 23: Programmable Features

    MN003441A01-AP Chapter 3 : Radio Controls Mode Output Lowercase p q r s 8 key Numeric Uppercase T U V Lowercase t u v 9 key Numeric Uppercase W X Y Z Lowercase w x y z 0 key Numeric or Hexadecimal Uppercase or Lowercase Toggles between mixed case mode, upper- case mode, and lowercase mode.
  • Page 24 MN003441A01-AP Chapter 3 : Radio Controls Call Response Allows you to answer a private call. Channel Selects a channel. Contacts Allows you to access the Contacts menu. Dynamic ID (Conventional Only) Allows you to edit the ASTRO Individual ID and/or MDC Primary ID of the radio. NOTE: •...
  • Page 25 MN003441A01-AP Chapter 3 : Radio Controls Private Line Disable Allows you to adjust the desired squelch level of the radio. Priority Dispatch Allows you to call the dispatcher on a different talkgroup. Query Launches a list of predefined short text messages only after logging in with Two-Factor Authentication.
  • Page 26: Assignable Settings Or Utility Functions

    MN003441A01-AP Chapter 3 : Radio Controls TMS Quick Text Selects a predefined message. User Allows you to log on to the server with a personally identifiable user name. Zone Select Selects a zone from the switch. 3.3.2 Assignable Settings or Utility Functions Keypad/Controls Lock Locks or unlocks the keypad, programmable buttons, switches, or rotary knobs.
  • Page 27: Chapter 4: Status Indicators

    MN003441A01-AP Status Indicators Chapter 4 Status Indicators This section explains the status indicators of the radio. Battery Charge Status Your radio indicates the battery charge status through LED, sounds, and the battery icon on the display. You can also check the battery charge status by using the menu entry. Battery Protection is activated when the battery is low or operating in extremely low temperatures to extend radio communication.
  • Page 28: Hazloc Battery Type Detection

    MN003441A01-AP Chapter 4 : Status Indicators Procedure: to Batt. 2 Press the Menu Select button directly below Batt. Your radio displays the following result: Charge Percentage Percentage of current battery capacity. Remaining Capacity Remaining power of the battery in mAh. Estimated Charges Number of charges cycles the battery has gone through.
  • Page 29: Status Icons

    MN003441A01-AP Chapter 4 : Status Indicators Indication Status Solid yellow Radio is receiving in both trunking and conventional clear mode. NOTE: The yellow LED illuminates only when the Busy LED feature is enabled through Customer Programming Software (CPS). Blinking yellow Radio is receiving a secured transmission.
  • Page 30 MN003441A01-AP Chapter 4 : Status Indicators Icon Description The radio is set at Low power. The radio is scanning a scan list. Blinking dot The radio detects activity on the designated Priority-One channel. Steady dot The radio detects activity on the designated Priority-Two channel. The vote scan feature is enabled.
  • Page 31: Tms Status Icons

    MN003441A01-AP Chapter 4 : Status Indicators Icon Description Turn the Multi-Function Knob to turn the volume up or down. TMS Status Icons This feature only supports Model 3.5 and Model 2.5. Text Messaging Service (TMS) icons appear on the radio display when you send and receive text messages.
  • Page 32: Alert Tones

    MN003441A01-AP Chapter 4 : Status Indicators Icon Description A radio number added to a Call List. A mobile number. A mobile number added to a Call List. A landline phone number. A landline phone number added to a Call List. An incoming call or data.
  • Page 33 MN003441A01-AP Chapter 4 : Status Indicators You Hear Tone Name Heard Out of Range (When PTT button is pressed) the radio is out of range of the system. Invalid Mode When radio is on an unpreprogrammed channel. A Group of Busy When system is busy.
  • Page 34 MN003441A01-AP Chapter 4 : Status Indicators You Hear Tone Name Heard Unique, New Message When a new message is received. Low-Pitch- ed Chirp Unique, Priority Status When a priority message is received. High-Pitch- ed Chirp Incremen- Bluetooth Paired When Bluetooth accessory is paired with the radio. tal- Pitched Bluetooth Connected When Bluetooth accessory is connected to the radio.
  • Page 35 MN003441A01-AP Chapter 4 : Status Indicators You Hear Tone Name Heard Clear Voice At beginning of a non-coded communication. Priority Channel Re- When activity on a priority channel is received. ceived Emergency Alarm/Call When entering the emergency state. Entry Central Echo When central controller has received a request from a radio.
  • Page 36: Phone Call Displays And Alerts

    MN003441A01-AP Chapter 4 : Status Indicators Phone Call Displays and Alerts The following phone call displays and alerts appears on the radio display when you make and receive phone calls. The radio also uses alert tones to indicate the current status. You Hear You See When...
  • Page 37: Chapter 5: General Radio Operation

    MN003441A01-AP General Radio Operation Chapter 5 General Radio Operation This chapter explains the general operations of your radio. Selecting a Zone When and where to use: A zone is a group of channels. Do one of the following to select a radio channel.
  • Page 38: Selecting A Channel By Using Channel Search Button

    MN003441A01-AP Chapter 5 : General Radio Operation d. Press the Menu Select button directly below Sel to confirm the selected channel. • Select a channel using the radio menu Channel Up or Channel Down: to ChUp or ChDn. b. Press the Menu Select button directly below ChUp or ChDn. Positions of ChUp and ChDn on the display may differ each time you release the Menu Select button.
  • Page 39: Saving A Zone And A Channel To A Button

    MN003441A01-AP Chapter 5 : General Radio Operation Procedure: 1 Toggle from your current zone and channel to the required zone and channel. to MS1, MS2 ... or MS5. 3 Press and hold the Menu Select button directly below one of the softkeys (MS1–MS5). You hear a short, medium-pitched tone when the zone and channel is saved.
  • Page 40: Receiving And Responding To A Private Call (Trunking Only)

    MN003441A01-AP Chapter 5 : General Radio Operation • For Trunking system, the display shows the caller alias or ID. Procedure: 1 Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth. 2 Wait for the Talk Permit Tone. Then, press the PTT button to respond to the call. The LED lights up solid red.
  • Page 41: Making A Talkgroup Call

    MN003441A01-AP Chapter 5 : General Radio Operation • A preprogrammed button. • The Contacts list (see Viewing Details of a Contact on page 58). 5.6.1 Making a Talkgroup Call Procedure: 1 Turn the 16-Position Select Channel Knob to select the channel with the desired talkgroup. 2 Hold the radio vertically 1 to 2 inches (2.5 to 5.0 cm) from your mouth.
  • Page 42: Making An Enhanced Private Call (Trunking Only)

    MN003441A01-AP Chapter 5 : General Radio Operation 5.6.3 Making an Enhanced Private Call (Trunking Only) Prerequisites: Your radio must be preprogrammed to allow you to use this feature. When and where to use: This feature allows you to send an individual Call Alert Page if there is no answer from the target radio.
  • Page 43: Switching Between Repeater Or Direct Operation Button

    MN003441A01-AP Chapter 5 : General Radio Operation 5 When your call is answered, press and hold the PTT button to talk. Release the PTT button to listen. 6 Press to return to the Home screen. Phone Call Displays and Alerts on page 36 for more information if your call is not answered.
  • Page 44: Monitoring Conventional Mode

    MN003441A01-AP Chapter 5 : General Radio Operation d. Press and hold the PTT button to transmit. The LED lights up solid red. e. Release the PTT button to receive (listen). 5.8.2 Monitoring Conventional Mode This feature allows you to monitor channel traffic on conventional channels by defeating the coded squelch.
  • Page 45: Chapter 6: Additional Performance Enhancement

    SecureNet allows you to perform secured communications on an Analog or Motorola Data Communication (MDC) channel. P25 Digital Vehicular Repeater System Motorola Solutions offers an MSI Certified APX compatible, third party, P25 Digital Vehicular Repeater System (DVRS). This provides low-cost portable radio coverage in areas where only mobile radio coverage is available.
  • Page 46: Conventional Talkgroup And Radio Scan Enhancements

    MN003441A01-AP Chapter 6 : Additional Performance Enhancement DVRS can also work with SmartConnect to use broadband coverage for the in-vehicle mobile. Portable radios communicate through the in-vehicle mobile to the system through the LTE, Satellite, or Wi-Fi connection. This extends the system coverage when you are away from the vehicle. Conventional Talkgroup and Radio Scan Enhancements Enhancements have been made to the Conventional Talkgroup at the system to improve the Scan feature operation significantly when multiple agencies are using a single conventional radio frequency...
  • Page 47: Chapter 7: Advanced Features

    MN003441A01-AP Advanced Features Chapter 7 Advanced Features This chapter explains the operations of the features available in your radio. Advanced Call Features This chapter explains the operations of the call features available in your radio. 7.1.1 Selective Call (ASTRO Conventional Only) A Selective Call is a call from an individual radio to another individual radio with privacy.
  • Page 48: Talkgroup Call Feature (Conventional Only)

    MN003441A01-AP Chapter 7 : Advanced Features The display shows the ID of the target radio. 5 Release the PTT button to listen. 6 Press to return to the Home screen. 7.1.2 Talkgroup Call Feature (Conventional Only) This feature allows you to define a group of conventional system users so that they can share the use of a conventional channel.
  • Page 49: Making Priority Dispatch Calls

    MN003441A01-AP Chapter 7 : Advanced Features • Use the keypad to enter a number corresponding to the location in the status list. 3 Press the PTT button to send the status. When the dispatcher acknowledges, you hear four tones and the display shows Ack received.
  • Page 50: Classification Of Regrouped Radios

    MN003441A01-AP Chapter 7 : Advanced Features 7.1.5.1 Classification of Regrouped Radios The dispatcher can classify regrouped radios into Select Enabled or Select Disabled categories. Select Enabled Select-enabled radios are free to change to any available channel, including the dynamic- regrouping channel, once you have selected the dynamic-regrouping position. Select Disabled Select-disabled radios cannot change channels while dynamically regrouped.
  • Page 51: Saving A Channel In The Dynamic Zone From List Selection

    MN003441A01-AP Chapter 7 : Advanced Features 3 Perform one of the following actions: • Press the Menu Select button below Sel to select. • Press the Menu Select button below Exit to exit. If you have selected one of the Dynamic Zone Channels list, the display returns to Home screen with the selected <# Dynamic Zone Channels>...
  • Page 52: Deleting A Channel In The Dynamic Zone

    MN003441A01-AP Chapter 7 : Advanced Features You can cancel this operation at this step by pressing the Back button to return to Search Options screen. The display shows Searching..Once found, the display shows Channel updated. If the radio is triggered to search for an empty entry, the display shows Invalid entry. If the entry does not match, the display shows Channel name not found.
  • Page 53: Remote Monitor

    MN003441A01-AP Chapter 7 : Advanced Features • If the radio is not compatible, the radio displays Target radio incompatible. Press the Menu Select button directly below Ok and the radio returns to the previous screen. Once connected, the zone clone status is displayed on the right. 4 Press the Menu Select button directly below Next to accept the source zones selection.
  • Page 54: Making A Private Call From Contacts

    MN003441A01-AP Chapter 7 : Advanced Features • Call Alert Each entry within Contacts contains the following information: • Call Alias (Name) • Call ID (Number) • Call Type (Icon) • WACN ID (ASTRO 25 Trunking IDs only) • System ID Your radio must be programmed to allow you to add, edit, or delete the contact entries.
  • Page 55: Deleting A Contact Entry

    MN003441A01-AP Chapter 7 : Advanced Features to [New Contact] and press the Menu Select button directly below Sel . to Name and press the Menu Select button directly below Edit. The display shows Edit name and a blinking cursor appears. 4 Use the keypad to enter the name and press the Menu Select button directly below Ok once you have entered the name.
  • Page 56: Adding A Contact To A Call List

    MN003441A01-AP Chapter 7 : Advanced Features 7.3.4 Adding a Contact to a Call List Procedure: to Cnts and press the Menu Select button directly below Cnts . The entries are alphabetically sorted. to the entry you want to add and press the Menu Select button directly below Optn . to Add to CallLst and press the Menu Select button directly below Sel .
  • Page 57: Editing As Entry Id

    MN003441A01-AP Chapter 7 : Advanced Features to the entry you want to edit and press the Menu Select button directly below Optn . to Edit and press the Menu Select button directly below Sel . to the entry alias you wish to change and press the Menu Select button directly below Edit .
  • Page 58: Viewing Details Of A Contact

    MN003441A01-AP Chapter 7 : Advanced Features 7.3.7 Viewing Details of a Contact Procedure: to Cnts and press the Menu Select button directly below Cnts . The entries are alphabetically sorted. to the entry you want to view and press the Menu Select button directly below Optn .
  • Page 59: Changing The Scan List Status

    MN003441A01-AP Chapter 7 : Advanced Features • Long press the preprogrammed Scan List Programming button (side button). • Move the preprogrammed Scan List Programming switch to programming position. • to ScnL then press the Menu Select button directly below ScnL . The display shows the lists that can be changed.
  • Page 60: Viewing And Changing The Priority Status

    MN003441A01-AP Chapter 7 : Advanced Features 7.4.5 Viewing and Changing the Priority Status Procedure: Perform one of the following actions: • Press the Menu Select button directly below Sel one or more times to change the priority status of the current displayed channel. •...
  • Page 61: Deleting A Nuisance Channel

    MN003441A01-AP Chapter 7 : Advanced Features This change remains in effect until scan is turned off. Scan then reverts to the default setting. Procedure: • Making a Dynamic Priority Change using the preprogrammed Dynamic Priority button: a. When the radio locks onto the channel designated as the new Priority-Two channel, press the preprogrammed Dynamic Priority button.
  • Page 62: Receiving A Call Alert Page

    MN003441A01-AP Chapter 7 : Advanced Features 7.6.1 Receiving a Call Alert Page When and where to use: When you receive a Call Alert page, you hear four repeating alert tones and the LED blinks green. The call received icons blinks and the display shows Page received. Procedure: Press any button to clear the Call Alert page.
  • Page 63: Recent Calls

    MN003441A01-AP Chapter 7 : Advanced Features If the call alert page is not acknowledged, you hear a low tone and the display shows No acknowledge. Press the Menu Select button directly below Ok to return to the main screen of Contacts. Recent Calls Recent call menu allows you to view the recent incoming and outgoing call information.
  • Page 64: Instant Recall

    MN003441A01-AP Chapter 7 : Advanced Features This feature allows you to delete calls from the Recent Calls list. Procedure: Delete calls by using the following options: Option Actions Deleting all calls a Press Optn. b Select Delete Calls. c Select All Calls. d Press Yes.
  • Page 65: In-Call User Alert

    MN003441A01-AP Chapter 7 : Advanced Features g. To return to the Home screen, press the Menu Select button directly below Exit. Recent calls are lost after radio power cycle if the calls are not saved. • Playback the saved calls using the radio menu: a.
  • Page 66: Quik Call Ii

    MN003441A01-AP Chapter 7 : Advanced Features enabled channel, the Voice Mute button-press or the Voice Mute menu-selection allows the radio-user to toggle on and off Voice Mute functionality. Quik Call II This feature allows you to broadcast a series of distinct and recognizable tones before a voice transmission from the dispatcher or a radio.
  • Page 67: Special Considerations For Emergency Operation

    MN003441A01-AP Chapter 7 : Advanced Features Non-Tactical/Revert for Conventional System The radio reverts to the programmed emergency channel to send an alarm and/or make an emergency call. Non-Tactical/Revert for Trunking System The radio reverts to the programmed emergency talkgroup (trunking system) or channel (conventional system) to send an alarm and/or make an emergency call.
  • Page 68: Exiting Emergency As Supervisor (Trunking Only)

    MN003441A01-AP Chapter 7 : Advanced Features 7.10.4 Exiting Emergency as Supervisor (Trunking Only) Radios configured as Supervisor are able to cancel emergency mode of other radios. The dispatch console must be preprogrammed to use this feature. For more information, contact your system administrator.
  • Page 69: Sending Remote Emergency By Entering The User Id

    MN003441A01-AP Chapter 7 : Advanced Features • Transmit Inhibit • Out of Range • Imbalance Coverage If your radio receives acknowledgment, your radio displays a positive notification. If your radio does not receive acknowledgment from the target radio, your radio displays a negative notification.
  • Page 70: Sending An Emergency Alarm

    MN003441A01-AP Chapter 7 : Advanced Features 7.10.6 Sending an Emergency Alarm When and where to use: This feature allows you to send a data transmission, which identifies the radio sending the emergency, to the dispatcher. NOTE: The default timer of Emergency button press to activate Emergency is 300 milliseconds.
  • Page 71: Sending An Emergency Alarm With Emergency Call

    MN003441A01-AP Chapter 7 : Advanced Features Your radio microphone is automatically activated, allowing you to communicate with the group of radios without pressing the PTT button. This activated microphone state is also known as hot mic. The hot mic applies to the first voice transmission from your radio during the Emergency call. For subsequent transmissions in the same Emergency call, you must press the PTT button.
  • Page 72: Sending An Emergency Alarm And Call With Hot Mic

    MN003441A01-AP Chapter 7 : Advanced Features 7.10.10 Sending An Emergency Alarm and Call with Hot Mic This feature allows you to send an Emergency Alarm and Call with hot mic to a group of radios. When and where to use: Your radio must be programmed for this type of operation. When indirect PTT such as Hot Mic is activated, the audio transmission can be configured in CPS to route the audio to the radio internal microphone, wired RSM microphone, or Bluetooth wireless microphone.
  • Page 73: Entering Fireground Zone Channel (Conventional)

    MN003441A01-AP Chapter 7 : Advanced Features It consists of central components that provide on-scene and in building radio coverage, and enhanced personnel accountability and monitoring: • Your APX portable radios • Incident Management Software • Command Terminal • Radio Frequency (RF) Modem (Conventional Only) •...
  • Page 74: Responding To Evacuation Indicator

    MN003441A01-AP Chapter 7 : Advanced Features 5 Release the PTT button to receive. You hear a Transmit End Tone. 7.11.2 Responding to Evacuation Indicator When and where to use: The Incident Commander can trigger one of sixteen Tactical Alerts from the Command Terminal.
  • Page 75: Selecting Or Changing The Ars Mode

    MN003441A01-AP Chapter 7 : Advanced Features 7.13.1 Selecting or Changing the ARS Mode When and where to use: The following methods are options on how to select or change the ARS Mode. The result of all the methods is the same. You can use the options interchangeably depending on your preference and the programmed functions.
  • Page 76: Logging Out

    MN003441A01-AP Chapter 7 : Advanced Features • to [ID Entry] and press the Menu Select button directly below Edit to enter ID. A blinking cursor appears on the screen. Use the keypad to type or edit a user name. Press the Menu Select button directly below Ok to submit. •...
  • Page 77: Text Messaging Service

    MN003441A01-AP Chapter 7 : Advanced Features • Select Yes to clear all your private data. The display shows Private data cleared. • Select No to keep your private data. 7.14 Text Messaging Service Text Messaging Service (TMS) allows you to send and receive messages and run database queries directly from your radios.
  • Page 78: Sending A Quick Text Message

    MN003441A01-AP Chapter 7 : Advanced Features 6 Press the Menu Select button directly below Optn once the message is composed. to Send Message and press the Menu Select button directly below Sel . 8 Perform one of the following actions: •...
  • Page 79: Priority Status And Request Reply For New Text Messages

    MN003441A01-AP Chapter 7 : Advanced Features to scroll through the list of messages and press the Menu Select button directly below Sel to select the required message. The message appears on the Compose screen, with a blinking cursor at the end of it. Use the keypad to edit the message, if required.
  • Page 80: Removing A Priority Status From A Text Message

    MN003441A01-AP Chapter 7 : Advanced Features 7.14.4.2 Removing a Priority Status from a Text Message Prerequisites: Ensure there is an outgoing message composed to allow you to perform this procedure. See Composing and Sending a New Text Message on page 77 for more information.
  • Page 81: Removing A Priority Status And A Reply Request From A Text Message

    MN003441A01-AP Chapter 7 : Advanced Features 7.14.4.6 Removing a Priority Status and a Reply Request from a Text Message Prerequisites: Ensure that an outgoing message is composed to allow you to perform this procedure. Composing and Sending a New Text Message on page 77 for more information.
  • Page 82: Replying To A Received Text Message

    MN003441A01-AP Chapter 7 : Advanced Features The display shows a list of aliases or IDs, with the sender of the latest received message on top. to the required aliases or ID and press the Menu Select button below Sel to view the message.
  • Page 83: Accessing The Drafts Folder

    MN003441A01-AP Chapter 7 : Advanced Features 7.14.4.10 Accessing the Drafts Folder When and where to use: This folder stores the messages that were saved previously. The Drafts folder can hold up to 10 messages. The oldest draft in the folder is deleted when the 11 message comes in.
  • Page 84: Deleting A Text Message

    MN003441A01-AP Chapter 7 : Advanced Features • Select Back to return to the previous screen. NOTE: The icon at the top right corner of the screen indicates the status of the message. Status Icons on page 29 for more information. 7.14.4.11.2 Sending a Sent Text Message Procedure:...
  • Page 85: Astro 25 Advanced Messaging Solution

    ASTRO 25 Advanced Messaging Solution The ASTRO 25 Advanced Messaging Solution allows you to quickly send and receive messages and run database queries directly from your data-enabled Motorola Solutions two-way radios. Federal mandate requires Two-Factor Authentication when querying Federal and State databases.
  • Page 86: Logging Out Of Two-Factor Authentication

    MN003441A01-AP Chapter 7 : Advanced Features • Press and hold to scroll through the list of predefined usernames at a fast scroll rate. Press the Menu Select button directly below Sel to select the predefined username. If the selected predefined username has more than the maximum allowed characters, or an invalid character in it, the display shows momentary Invalid ID.
  • Page 87: Sending A Query

    MN003441A01-AP Chapter 7 : Advanced Features 2 Select Yes to clear all your private data or select No to keep your private data. If you select Yes, the display shows momentary Private data cleared. 7.15.2 Sending a Query Prerequisites: This feature is available for radio users who have successfully logged in with the Two-Factor Authentication.
  • Page 88: Receiving A Query

    MN003441A01-AP Chapter 7 : Advanced Features If the message is not sent, you hear a low tone, the display shows Send failed and returns to the main TMS screen. NOTE: The server responds to your query with the required report in text messages. You can append a priority status and/or a request reply to your message.
  • Page 89: Managing Encryption

    MN003441A01-AP Chapter 7 : Advanced Features • The radio does not transmit until you set the Secure/ Clear switch to the secure position. • You can request to configure the radio to ignore the clear voice or insecured transmission when the radio is in secured transmission. Check with your agent for details. •...
  • Page 90: Selecting Encryption Keys

    MN003441A01-AP Chapter 7 : Advanced Features 7.16.3.3 Selecting Encryption Keys Procedure: to Key. 2 Press the Menu Select button directly below Key. The display shows the last user-selected and stored encryption key, and the available menu selections. to scroll through the encryption keys or use the keypad to enter the number of the desired key.
  • Page 91: Erasing Encryption Keys

    MN003441A01-AP Chapter 7 : Advanced Features 7.16.3.5 Erasing Encryption Keys Do one of the following to erase the selected encryption keys. You can use the options interchangeably depending on your preference and the programmed functions. Procedure: • Erasing the selected encryption keys using the radio menu: to Eras and press the Menu Select button directly below Eras.
  • Page 92: Radio Lock

    MN003441A01-AP Chapter 7 : Advanced Features 7.17 Radio Lock This Radio Lock feature allows you to lock your radio with a password for security. The default password is 0123456789. When you turn on your radio for the first time, you must use the default password to unlock the radio.
  • Page 93: Changing The Tactical Inhibit Password

    MN003441A01-AP Chapter 7 : Advanced Features 8 Press the Menu Select button directly below Ok . 9 Re-enter the new password. 10 Press the Menu Select button directly below Ok . The password is updated. If the two passwords do not match, repeat step 5 through step...
  • Page 94: Location

    MN003441A01-AP Chapter 7 : Advanced Features 7.19 Location The Global Navigation Satellite System (GNSS) in the radio integrates information from the Global Positioning System (GPS) to determine the approximate geographical location of your radio. NOTE: The Location feature is addressed as Global Positioning System (GPS) across the manual as the naming convention of the buttons and strings remain the same as the legacy feature of GPS.
  • Page 95: Location Format

    MN003441A01-AP Chapter 7 : Advanced Features 7.19.2 Location Format This feature allows you to select different display formats of GPS location. The following GPS location formats are available: • Lat/Long (DD) • Lat/Long (DDM) • Lat/Long (DMS) • UTM/UCS • SLD99 •...
  • Page 96: Selecting Location Format

    MN003441A01-AP Chapter 7 : Advanced Features The location coordinates are updated automatically every 5 seconds while the location signal is present. If the radio fails to get a location fix, the display shows No service and returns to the previous display.
  • Page 97: Viewing A Saved Waypoint

    MN003441A01-AP Chapter 7 : Advanced Features • The display shows Current loc saved as [Destination]. 5 To return to the Home screen, press , the PTT button, the preprogrammed GPS button or the Back button. 7.19.7 Viewing a Saved Waypoint Prerequisites: Ensure your radio shows the current location on the screen.
  • Page 98: Editing The Coordinates Of A Waypoint

    MN003441A01-AP Chapter 7 : Advanced Features • Press the Menu Select button directly below Back to return to the previous screen. • Press , the PTT button, or the preprogrammed GPS button to return to the Home screen. 7.19.9 Editing the Coordinates of a Waypoint When and where to use: NOTE: You can only edit preprogrammed coordinates of Home and Destination.
  • Page 99: Deleting A Single Saved Waypoint

    MN003441A01-AP Chapter 7 : Advanced Features 7.19.10 Deleting a Single Saved Waypoint Prerequisites: Ensure your radio shows the current location on the screen. Procedure: 1 Press the Menu Select button directly below Optn. to Waypoints and press the Menu Select button directly below Sel . The display shows a list of waypoints.
  • Page 100: Location Feature In Emergency Mode

    MN003441A01-AP Chapter 7 : Advanced Features to Dist frm here and press the Menu Select button directly below Sel . The display shows a list of waypoints. to the required waypoint and press the Menu Select button directly below Sel . The display shows the distance and bearing from the current to the selected coordinates.
  • Page 101: Mission Critical Geofence

    MN003441A01-AP Chapter 7 : Advanced Features Once the radio is connected, you hear a dynamic regroup tone, the radio display shows <DYNAMIC channel> with the temporary green color intelligent backlight and you hear a Voice Announcement. NOTE: When the radio loses the GPS signal, the GPS icon blinks and the radio sounds two high- pitched tones repetitively to indicate that the GPS has failed to operate.
  • Page 102: Exiting Mission Critical Geofence

    MN003441A01-AP Chapter 7 : Advanced Features The radio then connects to the designated talkgroup. The radio displays the talkgroup alias and dynamic regroup tone sounds. The transmit power level changes and the radio shows a direct text message content without any user operation. NOTE: The availability of the Voice Announcement (VA), TMS display, Intelligent Backlight, and Transmit Power Level alerts depend on your radio configuration.
  • Page 103: Site Trunking Feature

    MN003441A01-AP Chapter 7 : Advanced Features When out-of-range, your radio shows the following indications: • A tone sounds. • The display shows the currently selected zone or channel combination, and out-of-range notification. Your radio remains in this out-of-range condition until it locks onto a control channel or failsoft channel, or if it is turned off.
  • Page 104: Changing The Current Site

    This feature allows your radio to extend its functionality by connecting to external accessories. Use Motorola Solutions proprietary Mission Critical Wireless (MCW) devices with APX radios during Mission Critical operations. Other Bluetooth devices may or may not meet the mission critical standard.
  • Page 105: Pairing The Authentication Pin With The Generated Numeric Pin

    MN003441A01-AP Chapter 7 : Advanced Features When the pairing timer expires, the display shows <Device Friendly Name> pair canceled and return to Home screen. If you choose to accept the pairing process, the display shows Compare PIN: XXXXXX. If you choose to reject the pairing process, the display shows Cancel pairing in progress...
  • Page 106: Pairing The Authentication Pin By Manually Keying In The Same Pin

    MN003441A01-AP Chapter 7 : Advanced Features If successful, the display shows Pairing in progress,<Device Friendly Name> paired, Connecting in progress... followed by <Device Friendly Name>connected. The display returns to the Bluetooth feature screen. If unsuccessful, one of the following scenarios will occur: •...
  • Page 107: Viewing And Clearing The Bluetooth Device Information

    MN003441A01-AP Chapter 7 : Advanced Features 7.22.2 Viewing and Clearing the Bluetooth Device Information Procedure: to BT. Press the Menu Select button directly below BT to access the Bluetooth feature screen. to Devices. Once the display highlights the Devices, the display shows XX connected alternates with XX paired.
  • Page 108: Astro 25 (P25) Programming Over Project 25 (Pop25)

    MN003441A01-AP Chapter 7 : Advanced Features • Press the Menu Select button directly below Ok to save the new Friendly Name and return to the Bluetooth feature screen. • Press the Back button to return to the Bluetooth feature screen. 7.23 ASTRO 25 (P25) Programming Over Project 25 (POP25) Also called Over-the-Air Programming, this feature allows configuration data and firmware to be...
  • Page 109: Voice Announcement

    MN003441A01-AP Chapter 7 : Advanced Features 7.24 Voice Announcement This feature enables the radio to audibly indicate the current feature mode, zone, or channel assigned to the user. The available voice announcement (VA) priority options are: High Voice announcement is enabled even when the radio is receiving calls. Voice announcement is disabled when the radio is receiving calls.
  • Page 110: Sending Ssa Notification To Single Site By Manual Entry

    MN003441A01-AP Chapter 7 : Advanced Features If the site is not available, the display shows <Site Alias> not available. If the site does not exist, the display shows <Site Alias> does not exist. 6 To return to the Home screen, press the Menu Select button directly below Exit. If you are at the site designated to receive this alert, you can hear an alert tone repeated periodically.
  • Page 111: Sending Ssa Notification To All Available Sites

    MN003441A01-AP Chapter 7 : Advanced Features 2 Press the Menu Select button directly below SSA. The display shows the Site Alert screen. to Start Alert and press the Menu Select button directly below Sel. The display shows the Select Site screen. to [All Sites] and press the Menu Select button directly below Sel.
  • Page 112: Stopping Ssa Notification Of A Single Site

    MN003441A01-AP Chapter 7 : Advanced Features 7.25.5 Stopping SSA Notification of a Single Site Procedure: to SSA. 2 Press the Menu Select button directly below SSA. The display shows the Site Alert screen. to Stop Alert and press the Menu Select button directly below Sel. The display shows the Select Site screen.
  • Page 113: Stopping Ssa Notification Of All Sites

    MN003441A01-AP Chapter 7 : Advanced Features • If the single site does not exist, the display shows <Site ID> does not exist. 6 To return to the Home screen, press the Menu Select button directly below Exit. The SSA Alert for the designated site stops. 7.25.7 Stopping SSA Notification of All Sites Procedure:...
  • Page 114: Utilities

    MN003441A01-AP Chapter 7 : Advanced Features 7.26 Utilities This chapter explains the operations of the utility functions available in your radio. 7.26.1 Selecting the Power Level This feature enables you to select the power level at which your radio transmits. The radio always turns on to the default setting.
  • Page 115: Enabling And Disabling The Radio Alias

    MN003441A01-AP Chapter 7 : Advanced Features to scroll through the menu selections. c. Press the Menu Select button directly below Sel to select the required radio profile, or press the Menu Select button directly below Exit to exit the screen without making any changes. The radio returns to the Home screen.
  • Page 116: Controlling The Display Backlight

    MN003441A01-AP Chapter 7 : Advanced Features d. Press the Menu Select button directly below Sel to select the radio profile with the required speaker routing or press the Menu Select button directly below Exit to exit the screen without making any changes. The radio returns to the Home screen.
  • Page 117: Turning Voice Mute On Or Off

    MN003441A01-AP Chapter 7 : Advanced Features b. Press the Menu Select button directly below Mute. The display shows momentary Tones off, indicating that the tones are disabled or the display shows momentary Tones on, and you hear a short tone indicating that the tones are enabled.
  • Page 118: Adjusting The Squelch Level

    MN003441A01-AP Chapter 7 : Advanced Features 7.26.10 Adjusting the Squelch Level The Adjustable Fine Tune Squelch feature allows you to adjust the desired squelch level of the radio between level 0 and 15. The following settings determine the types of call that you receive: •...
  • Page 119: Using Conventional Squelch Operation Features

    MN003441A01-AP Chapter 7 : Advanced Features 7.26.11.1 Using Conventional Squelch Operation Features Procedure: to Sql. 2 Press the Menu Select button directly below Sql. The display shows Squelch XX, where XX is the value for the current squelch. 3 Perform one of the following actions: •...
  • Page 120: Transmit Inhibit

    MN003441A01-AP Chapter 7 : Advanced Features Mode Description Transmit Inhibit on Busy Channel with Wrong You cannot transmit on an active channel with a Squelch Code squelch code or (if secure-equipped) encryption key other than your own. If the PL code is the same as yours, the transmission is not preven- ted.
  • Page 121: General Radio Information

    MN003441A01-AP Chapter 7 : Advanced Features • Press the Transmit Inhibit programmable button. NOTE: If the user has disabled TX Inhibit using the softkey and then moves the switch to the position where TX Inhibit is enabled, the new value overwrites the menu value. The display shows Tx inhibit off.
  • Page 122: Viewing The Ip Information

    MN003441A01-AP Chapter 7 : Advanced Features • Codeplug Alias (Optional) NOTE: To return to the Home screen, press at any time. Procedure: 1 Perform one of the following actions: • Press the preprogrammed Info button. • to Info and press the Menu Select button directly below Info. to Radio Info and press the Menu Select button directly below Sel.
  • Page 123: Front Panel Programming

    MN003441A01-AP Chapter 7 : Advanced Features • Press the preprogrammed Info button. • to Info and press the Menu Select button directly below Info. to Control map and press the Menu Select button directly below Sel. The display shows the Control Map screen. 3 Perform one of the following actions: •...
  • Page 124: Changing Password (Optional)

    The radio displays Radio Param and Zn/Ch Param. 7.26.17.2 Changing Password (Optional) Radios from the Motorola Solutions factory are provisioned with a blank password. Prerequisites: To access the protected channels, press OK when the Enter Old Password prompts you to change the password.
  • Page 125: Editing Parameters

    MN003441A01-AP Chapter 7 : Advanced Features • Press BACK to access a different channel and make any necessary programming changes. 8 Press BACK to return to Zone List Selector. 9 Press BACK to return to FPP main menu. 10 Press to return to the Home screen.
  • Page 126 MN003441A01-AP Chapter 7 : Advanced Features Parameter Editing Keys Value Power Level High/Low Hot Keypad ON/OFF Busy LED ON/OFF Low Batt ON/OFF MPL Enable Disabled/Rx /Tx/All Scan List None/Scan List 1, 2, 3,... Zone Name Use keypad to enter numbers and alphabet characters. For more informa- tion, see Text Entry Icons on page Top Chan...
  • Page 127: Chapter 8: Accessories

    MN003441A01-AP Accessories Chapter 8 Accessories Not all accessories are FCC certified to operate with all radio models, band splits, or both. See the radio price pages for a list of FCC certified accessories or contact your sales representative for accessory compatibility. https://www.motorolasolutions.com to know more about the accessories supported by this radio.
  • Page 128: Legal And Compliance Statements

    Furthermore, Motorola Solutions reserves the right to change any products to improve readability, function, or design. Motorola Solutions does not assume any liability arising out of the applications or use of any product or circuit described herein; nor does it cover any license under its patent rights, nor the rights of others.
  • Page 129: Important Safety Information

    Before using the radio, read the RF Energy Exposure and Product Safety Guide for Portable Two-Way Radios which contains important operating instructions for safe usage and RF energy awareness and control for Compliance with applicable standards and Regulations. For a list of Motorola Solutions-approved antennas, batteries, and other accessories, visit the following website: https://www.motorolasolutions.com Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada.
  • Page 130: Fcc Licensing Information

    Applying for Canadian License The operation of your Motorola Solutions radio is subject to the Radio communications Act and must comply with rules and regulations of the Federal Government's department of Industry Canada. Industry Canada requires that all operators using Private Land Mobile frequencies obtain a radio license before operating their equipment.
  • Page 131: Maritime Radio Use In The Vhf Frequency Range

    MN003441A01-AP Maritime Radio Use in the VHF Frequency Range Maritime Radio Use in the VHF Frequency Range Special Channel Assignments Emergency Channel If you are in imminent and grave danger at sea and require emergency assistance, use VHF Channel 16 to send a distress call to nearby vessels and the United States Coast Guard. Transmit the following information, in this order: 1 “MAYDAY, MAYDAY, MAYDAY.”...
  • Page 132: Table 8: Vhf Marine Channel List

    MN003441A01-AP Maritime Radio Use in the VHF Frequency Range in the semiduplex mode on the two frequency channels specified in the table below. NOTE: Simplex channels 3, 21, 23, 61, 64, 81, 82, and 83 cannot be lawfully used by the general public in US waters.
  • Page 133 MN003441A01-AP Maritime Radio Use in the VHF Frequency Range 156.075 160.675 156.125 160.725 156.175 160.775 156.225 160.825 156.275 160.875 156.325 160.925 67** 156.375 156.375 156.425 156.425 156.475 156.475 156.575 156.575 156.625 – 156.675 156.675 156.725 156.725 77** 156.875 – 156.925 161.525 156.975 161.575...
  • Page 134: Declaration Of Compliance For The Use Of Distress And Safety Frequencies

    MN003441A01-AP Maritime Radio Use in the VHF Frequency Range Declaration of Compliance for the Use of Distress and Safety Frequencies The radio equipment does not employ a modulation other than the internationally adopted modulation for maritime use when it operates on the distress and safety frequencies specified in RSS-182 Section 7.3.
  • Page 135: Limited Warranty

    Product Accessories One (1) Year MOTOROLA SOLUTIONS, at its option, will at no charge either repair the Product (with new or reconditioned parts), replace it (with a new or reconditioned Product), or refund the purchase price of the Product during the warranty period provided it is returned in accordance with the terms of this warranty.
  • Page 136: Ii. General Provisions

    Repairs will be made only at the designated MOTOROLA SOLUTIONS repair depot. Local services are not included. MOTOROLA SOLUTIONS will pay for outbound shipping via MOTOROLA SOLUTIONS'S normal shipping methods.
  • Page 137: Vi. Patent And Software Provisions

    1 that MOTOROLA SOLUTIONS will be notified promptly in writing by such purchaser of any notice of such claim,...
  • Page 138: Vii. Governing Law

    You are also entitled to be compensated for any other reasonably foreseeable loss or damage from a failure in the goods or service. If you have any queries, please call Motorola Solutions Australia at 1800 457 439. You may also visit our website: https://www.motorolasolutions.com/en_xa/support.html...
  • Page 139: Glossary

    Automatic Registration Service ASTRO 25 Motorola Solutions standard for wireless digital trunked communications. ASTRO conventional Motorola Solutions standard for wireless analog or digital conventional communications. Autoscan A feature that allows the radio to automatically scan the members of a scan list. Bluetooth Bluetooth is an open wireless technology standard for exchanging data over short distances from fixed and mobile devices with high levels of security.
  • Page 140 MN003441A01-AP Glossary Channel A group of characteristics, such as transmit/receive frequency pairs, radio parameters, and encryption encoding. Control Channel In a trunking system, one of the channels that is used to provide a continuous, two-way/data- communications path between the central controller and all radios on the system. Conventional Typically refers to radio-to-radio communications, sometimes through a repeater.
  • Page 141 Light Emitting Diode (LED) An electronic device that lights up when electricity is passed through it. Motorola Solutions Digital Communications. Menu Entry A software-activated feature shown at the bottom of the display. Selection of a feature is controlled by the programming of the buttons on the side of the radio.
  • Page 142 MN003441A01-AP Glossary Network Access Code (NAC) operates on digital channels to reduce voice channel interference between adjacent systems and sites. Non-tactical/revert The user will talk on a preprogrammed emergency channel. The emergency alarm is sent out on this same channel. Over-The-Air Rekeying Allows the dispatcher to remotely reprogram the encryption keys in the radio.
  • Page 143 MN003441A01-AP Glossary Selective Call A feature that allows you to call a selected individual, intended to provide privacy and to eliminate the annoyance of having to listen to conversations of no interest to you. Selective Switch Any digital P25 traffic having the correct Network Access Code and the correct talkgroup. Squelch Muting of audio circuits when received signal levels fall below a pre-determined value.
  • Page 144 MN003441A01-AP Glossary Coordinated Universal Time. The international time standard (formerly Greenwich Mean Time, or GMT). Zero hours UTC is midnight in Greenwich, England, which is located at 0 degrees longitude. Everything east of Greenwich (up to 180 degrees) is later in time; everything west is earlier.

Table of Contents