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Index Section 1 - General Information Section II - Installation and Programming Section III - Operation Section IV - Theory of Operation Section V - Maintenance Section VI - Illustrated Parts List...
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3.9.2 keypad lock ........................3-18 3.9.3 monitor (mon) .........................3-19 3.9.4 repeater talkaround (ta) ..................3-20 3.9.5 Surveillance mode (Surv) ..................3-20 3.9.6 Squelch adjuSt (Sql) ....................3-21 3.9.7 tx diGital (txd) ........................3-21 3.9.8 tx power (lpw) .......................3-22 3.9.9 Zone Select (Zon) ......................3-23 Section iv theory of operation 4.1 introduction .........................
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5.3.1 teSt Setup ..........................5-1 5.3.2 aliGnment order ......................5-2 Reference Frequency ......................5-2 Transmit Power Curve ......................5-2 Transmit Power Levels ......................5-3 FM Modulation ........................5-3 Receiver Alignment ........................5-3 Squelch Adjustment .......................5-3 Vote Scan ..........................5-4 5.4 diSaSSemBly/aSSemBly ....................5-4 5.4.1 Battery removal ......................5-4 5.4.2 antenna removal ......................5-4 5.4.3 radio diSaSSemBly ......................5-4 Assemblies ..........................5-4 RX/TX Board Assembly ......................5-4...
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aSSemBly diaGram ........................6-5 6.6 front aSSemBly ......................6-7 partS liSt ............................6-7 aSSemBly diaGram ........................6-9 6.7 Back aSSemBly ......................6-11 partS liSt ..........................6-11 aSSemBly diaGram .........................6-13 6.8 SyStemS aSSemBly ..................... 6-15 partS liSt ..........................6-15 aSSemBly diaGram .........................6-17 6.9 SyStemS Board ......................6-19 partS liSt ..........................6-19 partS layout ...........................6-31 SchematicS ..........................6-33...
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Section vii inteGrated circuit data 7.1 introduction ......................... 7-1 7.2 BaSic loGic elementS ....................7-1 7.3 BaSic op-amp circuitS ....................7-2 7.4 Surface mount componentS .................. 7-7 Service Manual - KNG Portables - Index page viii...
..........1.25 kHz Helical wound molded rubber flex (standard) antenna type: ............. max current drain: ..........Transmit High Power: 1.5 amps Receive: 255 mA Standby: 100 mA operatinG temperature: ........-30° to +60° C BK Radio Page 1-1...
This equipment must be licensed by the Federal Communications Commission (FCC) before it may be used. Your BK Radio dealer can assist you in filing the appropriate application with the FCC and program each radio with your authorized frequencies and signaling codes.
General information 1.7 radio controlS programmable Speaker Side Buttons Side connector microphone alphanumeric display BK RADIO push-to-talk Ch 1 programmed menu items K NG - P 25 171.5 8 5 0 0 M Hz diamond Button liGt menu Square Button...
General information Status indicators Buttons and labels NOTE: The Diamond, Up Arrow, Down Arrow, and Receiver Signal Strength Square buttons are programmable with PC Radio Editor Software. The programmed functions are Receive Digital, Receive Analog, activated by pressing the associated button. Active rxd, rxa Hold Time Active functions are indicated by a highlighted background.
WXYZ 1.9 Service information If you need service, contact your local BK Radio dealer equipped to service your radio. If you find it impractical to have service performed by your local dealer, contact BK Radio at the address below: Bk radio attention: customer Service...
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General information BLANK PAGE Page 1-6 Service Manual - KNG Portables...
All information programmed into the radio is maintained even when the battery pack is removed. BK Radio battery packs are available in a variety of capacities and types for special applications. Rechargeable battery packs can be charged separately or while attached to a radio.
2.1.3 antenna inStallation NOTE: Transmitting without an antenna could result in damage to your radio. Use RELM/BK Radio approved antennas only. Use of non-qualified or mismatched antennas could result in diminished radio operation. Published radio specifications cannot be guaranteed with non-approved antennas.
3. Use the keypad to select the desired ID number. (Up to seven digits.) ▼ 4. Press the ‘ENT’ button to save the ID. C a l l 1 C a l l 1 L a b e l 12 3 4 5 6 7 BK Radio Page 2-3...
installation and programming 2.2.1.2 proGramminG uSer SelectaBle tranSmit toneS The KNG can be pre-programmed with up to 32, user selectable, CTCSS or CDCSS subaudible transmit tones. Tones are selected with the programmed buttons. If enabled, the tones can be programmed via the radio’s keypad.
installation and programming 2.2.1.4 proGramminG uSer SelectaBle talkGroup idS The KNG can be pre-programmed with up to 32, user selectable TGIDs. TDIDs are selected with the programmed buttons. If enabled, the TGIDs can be programmed via the radio’s keypad. to enter tGid list programming: 1.
If enabled, channel, zone and global parameters can be programmed using the radio’s keypad. Individual parameters may be blocked from programming access. Check with your RELM/BK Radio dealer or communications officer for information on the programmed functions of your radio.
installation and programming channel label 1. With ‘Chan Label’ highlighted, press the ‘ENT’ button. C h a n L a b e l 2. Press the ‘CLR’ button to clear the label. R x F r e q R x M o d e 3.
installation and programming transmit frequency 1. With ‘Tx Freq’ highlighted, press the ‘ENT’ button. S q u e l c h M o d e 2. Press the ‘CLR’ button to clear the current frequency. T x F r e q T x M o d e 3.
installation and programming talkgroup id This programs the channels Default TGID value. T x N A C 1. With ‘TGID’ highlighted, press the ‘ENT’ button. T G I D S e c u r e M o d e 2. Press the ‘CLR’ button to clear the currently programmed TGID. ▲...
Off = Selectable Power, On = Low Power Only. → O f f 3. Press the ‘ENT’ button to set the selection. ▲ ▼ 4. Press the ‘ESC’ button to return to the Channel Programming menu. BK Radio Page 2-13...
installation and programming 2.2.1.6 proGramminG Zone parameterS Programmable Zone functions include: Zone Label, Priority 1 Channel, Transmit on Priority 1 Channel, Priority 2 Channel, Automatic-Number- Identification (ANI) settings and Allow/Disallow Cloning. to enter the Zone programming mode: 1. Press the MENU button. Scan C h 1 2.
BOTH = Keypad Tones and manual ANI. → O f f D T M F O n l y 3. Press the ‘ENT’ button to set the selection. ▲ ▼ 4. Press the ‘ESC’ button to return to the Zone Programming menu. BK Radio Page 2-15...
installation and programming Automatic Number Identification (ANI) ID 1. With ‘ANI ID’ highlighted, press the ‘ENT’ button. P r i 2 C h a n 2. Press the ‘CLR’ button to clear the ID. A N I M o d e A N I I D 3.
P r i 1 C h a n n e l O f f 4. Press the ‘ENT’ button to set the selection. → M a i n 5. Press the ‘ESC’ button to return to the Global Programming menu. ▲ ▼ BK Radio Page 2-17...
installation and programming Global priority 1 Zone 1. With ‘Pri 1 Zone’ highlighted, press the’ENT’ button. P r i 1 C h a n 2. Use the up/down buttons to highlight the Zone of desired P r i 1 Z o n e T x o n P r i 1 Global Priority Channel.
→ K e y p r e s s or the keypad is used. ▲ ▼ 3. Press the ‘ENT’ button to set the selection. 4. Press the ‘ESC’ button to return to the Global Programming menu. BK Radio Page 2-19...
installation and programming Backlight duration 1. With ‘Bklight Dur’ highlighted, press the ‘ENT’ button. T X T O T 2. Use the up/down buttons to select the desired Backlight Time Limit. B k l i g h t M o d e B k l i g h t D u r (1 - 6 seconds, Off or Always On) ▲...
If “Cloning” is programmed as a menu item, any Source radio (a KNG with the desired radio frequencies and settings) is capable of transferring its program to another KNG of the same frequency range. In addition, information between a KNG-P150 and certain other BK Radio models radio can be cloned. (See “KNG to Legacy Radio Cloning” below.) The radio receiving the program is referred to as the Target.
The KAA0701 cloning cable will be required in the following procedures. Information programmed in a KNG-P150 portable can be cloned other BK Radio models on a Zone- to-Zone basis. Entire radio cloning is not available between different radio models. Cloning compatible models include: DPHX5102X, GPH5102XP, DPHX-CMD, GPH-CMD, DMH, GMH Plus and most GPH portable models.
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If picklist selections are assigned in the source radio, and the target radio is not capable of picklist selection, the associated picklist value will be cloned to the target radio. For example, if a channel has a picklist selected NAC whose value is $123, then $123 will be sent to the target radio. BK Radio Page 2-23...
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NOTE: Earlier BK Radio models use the term “Group” instead of “Zone”. Connect the KAA0701 Cloning Cable to the side connector of the Source and target radios and power up both radios. On the Target radio select the target zone/group by pressing the [#] key Digital and entering the number of the desired zone/group.
2.2.2.3 leGacy radio to knG cloninG The following instructions are based on the DPHX5102X. NOTE: Earlier BK Radio models use the term “Group” instead of “Zone”. The following table shows cloned information when using a KNG-P150 as the Target Radio:...
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NOTE: To stop the ‘FAIL’ Mode, press [CLR], . command radio model target Selection When using a BK Radio Command (CMD) radio as a cloning source you must designate the target as a G/DPH-CMD not a standard G/DPH. Press...
Both Receive and Transmit Network Access Codes (NAC) are required for channels programmed to operate in Digital Mode. NACs can be viewed and programmed as either decimal or hexadecimal numbers. (See Network Access Code.) BK Radio Page 2-27...
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installation and programming don’t Show empty Zones Each zone can be programmed with zero to sixteen channels. Zones with no channels can be hidden from view by selecting ‘Don’t Show Empty Zones’. Zones that are made up of unprogrammed channels are not considered empty and can not be hidden from view.
Tier III - Full Keypad and Display By selecting the proper Tier, under the Options Tab, programmable functions that do not apply to the selected tier will be ‘grayed out’ or blocked from selection. BK RADIO BK RADIO BK RADIO PQRS...
installation and programming Global Data To read only the radio’s global settings select ‘Read Global Information from Radio’ under the ‘Read’ tab at the top of the screen. When reading only the global data, the previously active zone and channel information remains.
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Global Settings under the ‘Genera’ tab. receive frequency Enter a valid receive frequency. frequency ranges model number valid frequency range P150 136 to 174 MHz. P400 380 to 470 MHz P500 440 to 520 MHz P800 764 to 869 MHz BK Radio Page 2-31...
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installation and programming valid frequency increments Frequencies must be devisable by 1.25 kHz as shown. If a frequency that is not divisible kHz Hz by 1.25 kHz is entered the program will not accept it and a message will be displayed. XXX.001250 XXX.002500 Entering a zero for the Receive Frequency will cause the radio’s display to show...
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Channels programmed with Transmit frequencies must also contain a Receive frequency. transmit mode Each channel can be programmed for Analog-only operation, Digital-only operation, or Mixed Mode (Analog and Digital) operation. Selecting Mixed Mode for transmit allows the radio to transmit both digital and analog signals. BK Radio Page 2-33...
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installation and programming If the channel’s Transmit Mode is programmed for Mixed, the default transmit mode is set by the Transmit Digital Mode soft switch (see Global Controls Tab for control assignment options). Click on the box or use the spacebar to set select the desired operation. A for Analog, D for Digital, or M for Mixed Mode.
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When reading a radio, channels with active user selected tones will show “UTXG” followed by the current tone number. Squelch operation For Digital and Mixed Mode channels, a digital squelch operation must be programmed. Click on the box or use the space bar to set select the desired operation. BK Radio Page 2-35...
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installation and programming normal Used to mimic analog operation. Signals are only qualified with the programmed receive Network Access Code (NAC). All Talk Group IDs (TGIDs) and P25 Unit IDs are accepted. Selective Used for processing ‘Group Calls’ and ‘Unit-to-Unit Calls’. Users can be separated into Talk Groups with each group having its own TGID.
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Click on the box or use the spacebar to select “L” to lock channel in Low power or “-” to allow use of the Hi/Lo power switch. (See the Global Controls screen for switch options.) BK Radio Page 2-37...
installation and programming encryption channel Settings Security The following applies only to radios equipped with the Cryptographic module. Digital channels can be programmed to always transmit encrypted (Enc), always transmit clear (Clr), or to select the Transmit Mode with the Transmit Secure switch (Sw). Analog channels and channels that are set to clear or encrypted, will ignore the Transmit Secure switch.
APCO Project 25 compatible key fill device such as the Motorola KVL 3000 Plus, using a BK Radio keyloader cable. Use the dropbox to select “O” for channels that will receive OTAR messages, or “-” to disable OTAR on the channel.
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installation and programming Automatic Number Identification (ANI) On each Zone Settings screen, enter up to 7 digits (0 – 9, A – F) for the ANI ID that will be used when the zone is selected. The Automatic Numeric Identification (ANI) ID number can be used for radio management or transmitted as a DTMF tone burst for ANI purposes.
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Code Guard and/or Talkgroup will be searched. NOTE: Channel voting occurs only with Channel Scan and is disabled when Zone Scanning. Channels programmed as Vote channels are treated as normal scan list channels during Zone Scan operation. BK Radio Page 2-41...
installation and programming 2.2.3.5 GloBal SettinGS The Global Settings Screen allows editing of data that will be used by ALL Channel Zones in the radio, such as the radio’s P25 Unit ID, Talkback Modes, and Soft Switch assignments. To access the Global Settings Screen, click on Global Settings in the left most panel.
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The green Busy Channel Indicator on the top of the radio glows if there is carrier activity on the selected channel. If the selected channel is a Code Guard channel and the proper Code Guard value is not detected, the Busy Channel Indicator remains on for the duration of the carrier activity and BK Radio Page 2-43...
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installation and programming no message is heard. During Scan and Priority Scan operation, the Busy Channel Indicator glows when activity is detected on any channel on the Scan List. When scanning or priority scanning Code Guard channels and activity has been detected, the Busy Channel Indicator glows for the time period necessary to determine if the proper Code Guard value has been received.
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Global Priority 1 channel, when operating in the priority scan mode. When receiving activity on a scanned channel the radio will continue monitoring for activity on the assigned priority channels. When activity is detected the radio switches to receive the priority channel. BK Radio Page 2-45...
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installation and programming disabled If checked Priority channels are selected as assigned in the radio’s currently selected Channel Zone. (See priority options under Channel Zones) If unchecked priority scan operation is determined by these Global Priority settings: use main channel If checked the Priority 2 channel is selected by the channel select knob.
If checked, programmers will be prompted to enter the radio’s Administrator Password before writing to the radio via computer. If unchecked, a password is not required to write information to the radio. BK Radio Page 2-47...
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installation and programming enable nuisance channel delete If checked a Nuisance Channel can be temporarily removed from the Scan List by pressing the programmed nuisance channel button. When the radio is powered down and then back on, the channel will be restored to the scan list. If unchecked, unwanted scan channels must be removed via keypad scan list selection or PC programming.
(0 - 100) and press PTT to place the call. Call can be placed to individual radios who’s ID number is not programmed in the list by entering the Unit Call mode and selecting “Enter ID”. BK Radio Page 2-49...
installation and programming keypad editinG lockoutS taB Keypad editing lockouts pertain only to full keypad models with keypad programming enabled. (See Menus/Controls) All available keypad programmable options can be locked to disallow field programmability of proprietary functions. Any function selected in the Keypad Editing Lockouts screen will not be available when the User Password is used to enter the programming mode.
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tactical otar radio (Option required) Switch between digital and analog transmit onmixed mode tx digital channels Switch between low transmit power and programmed high tx power power setting (Continued) BK Radio Page 2-51...
installation and programming available functions Button Switch menu Enable secure transmit on channels programmed for tx Secure switchable encryption (Requires encryption option) unit call Enable P25 unit-to-unit call mode version Displays internal radio frimware information Remove all encryption keys and radio passwords ...
installation and programming Enter SLN’s (Storage Location Numbers) in the table that correspond to the CKR’s (Common Key References) of the keys that have been loaded into the radio with the APCO Project 25 compatible keyloader unit. label Program an alphanumeric label for each active encryption key. Security Enable Clear Tx Mode Warning Beep.
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User Specified - If selected the master radio will prompt the user to select the desired picklist slot prior to sending the key. default picklist target Select the desired picklist target slot. If “Default Pick List Target” is not selected above, this setting will be ignored. BK Radio Page 2-55...
2.2.5 tactical otar Setup The BK Radio Tactical OTAR system allows the transfer of a single encryption key, via a specially equipped Key Source radio, to OTAR capable BK Radios. Key Source radios can be programmed with a list of up to 32 keys from which to select.
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It is recomended that the OTAR channel be set to Always Encrypt (Enc). If the channel is programmed for switchable encryption, the switch must be in the encrypted position when sending or receiving Tacital OTAR keys. BK Radio Page 2-57...
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installation and programming If the OTAR channel is to also be used as a communication channel, select the desired encryption key from Encryption Key List. Global Settings Click the “Enable OTAR Operation” box under the” Encryption” tab. Select the “Disable Data Registration” check box under the “Encryption” tab. Drag-and-drop “Tactical OTAR”...
Load a Message Authentication Code Traffic Encryption Key (MTEK). The CKR CKR 12345 number of the MTEK must be between 1 and 61439. This number must match ALG: AES-256 the MTEK number programmed in the Source Radio. KID: 1313 LOAD CKR 54321 BK Radio ALG: AES-256 Page 2-59 KID: 2255...
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CKR 12345 ALG: AES-256 KID: 1313 installation and programming LOAD Load a Data Traffic Encryption Key (DTEK) key. The CKR number of the DTEK CKR 54321 must be between 1 and 61439. This number must match the DTEK number ALG: AES-256 programmed in the Source Radio.
General Failure DTEK Not Found or Not AES MTEK Not Found or Not AES General Failure during Key Wrap Key Not Found for Key Wrap Key to Wrap Key is Not identified as a KEK BK Radio Page 2-61...
installation and programming 2.2.6 vote Scan Setup Channels in a multicast conventional systems can be added to the scan list and designated as “voted” channels. The KNG radio scans all voted channels and selects the channel with the best signal. If enabled vote scanning takes place whenever the channel scan switch is on.
Unit-to-Unit transmission (systems without mobile relays, repeaters, remote control, etc.) may use codes from the table. Systems with relays, etc., may use code variations for systems control and operational efficiency. The system operator or engineer should be consulted regarding the operational requirement on such systems. BK Radio Page 2-63...
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installation and programming BLANK PAGE Page 2-64 Service Manual - KNG Portables...
Factory installed options are referenced on the back of the radio. The following list includes options available at the time of printing. Contact RELM Wireless or your BK Radio dealer for information on factory installed option. factory installed options...
2. Talk in a normal voice with the microphone one to two inches from your mouth. 3. Release the PTT switch to stop transmitting. BK RADIO If the length of your message exceeds the programmed Time-Out Timer Ch 1 K N G - P 2 5 171.
Analog receptions and transmissions will be indicated by illuminating the A annunciator in addition to the RX or TX annunciator. C h 1 K N G - P 2 5 171. 5 8 5 0 0 M H z uton menu BK Radio Page 3-3...
Radios that have the DES/AES factory option for encryption must have encryption keys loaded with an APCO Project 25 compatible key fill device such as the Motorola KVL 3000 Plus, using a BK Radio keyloader cable. The radio can hold up to 32 AES and/or DES keys.
2. Press the ‘YES’ button to zeroize encryption Z e r o i z e N o w ? or press ESC to abort the operation. 3. Hold the ‘ESC’ button to return to normal operation. BK Radio Page 3-5...
operation If programmed to the Menu button: 1. Press the Menu button. C h a n n e l S c a n 2. Use the up/down buttons to highlight ‘Zeroize Keys’ selection. Z e r o i z e K e y s 3.
To view the label and key index press the “#” button. K e y 2 K e y 3 Alternatively the key can be selected directly via the keypad by pressing 1-32. ▲ ▼ ENTER BK Radio Page 3-7...
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operation Pick Key Index If the “Key Pick List Target” is programmed (see “Target Radio Options” under 1 “Key Source Radio Configuration”) the pick list target screen is displayed. Use the Up/Down buttons to select the desired target key slot. This is the key ▲...
Voting occurs during channel scan operation and is not valid when scanning multiple zones (Zone Scan). During Zone Scan operation, the designated vote scan channels operate as normal scan channels and are note voted. BK Radio Page 3-9...
operation 3.5.4 nuiSance channel delete If a button on your radio is programmed for Nuisance Channel Delete a channel can be temporarily removed from the Scan List . To temporarily remove a channel from the scan list Press the assigned Nuisance C h 1 [ nuiS ] button...
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→ Z o n e 1 Z o n e 2 ▲ ▼ Z o n e 0 1 P r 1 → C h a n n e l 1 C h a n n e l 2 ▲ ▼ BK Radio Page 3-11...
operation menu operation C h 1 1. Press the assigned Menu button. K N G - P 2 5 171. 5 8 5 0 0 M H z 2. Use the up/down buttons to select ‘Pri Channels’. liGt menu 3. Use the up/down buttons to select the priority channel or zone you wish to edit.
operation 3.6 emerGency SiGnallinG optionS The KNG portable radio supports P25 Emergency Operation. When Emergency Operation is engaged the radio will transmit the P25 ID of the radio along with the required P25 Emergency information on the channel designated in the “Emergency TX” section of the radio editor software. Only channels programmed for Digital or Mixed Mode transmit can be assigned as the Emergency Channel.
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10 seconds. Each PTT will send the selected call. K N G - P 2 5 171. 5 8 5 0 0 M H z Press ‘ESC’ to exit Unit-to-Unit mode or press ‘U2U’ to select another caller ID. BK Radio Page 3-15...
operation receivinG a unit-to-unit call When receiving a unit-to-unit call the beeps and the phone icon is displayed during the reception. C h a n n e l 1 After the message the phone icon will continue flashing to indicate that a unit-to- Z o n e 2 unit call has been received.
5. Press the ‘ENT’ button to set the selection. U s e r N A C s → N A C - 0 1 6. Hold the ‘ESC’ button to return to normal operation. N A C - 0 2 ▲ ▼ BK Radio Page 3-17...
operation 3.8.3 tGid (utG) Selecting a Talk Group ID from the Pick List will assign the TGID to the currently select channel. All other channels are unaffected. Button operation 1. Turn to the channel you wish to assign the TGID. C h 1 K N G - P 2 5 2.
On - Slide the programmed switch toward the front of the radio. Off - Slide the switch up toward the channel select switch. Button operation On - Press the programmed button. Off - Press the button again. BK Radio Page 3-19...
operation menu operation 1. Press the assigned Menu button. C h a n n e l S c a n 2. Use the up/down buttons to select ‘Monitor’. M o n i t o r P R I S c a n 3.
6. Use the up/down arrows to select the desires squelch point. S q u e l c h A d j u s t 7. Press ‘ENT’ to set the selection and return to normal operating mode. ▲ ▼ BK Radio Page 3-21...
operation 3.9.7 tx diGital (txd) When the TXD is on, channels programmed for mixed-mode transmit will C h 1 transmit in digital mode. When off, mixed-mode channels transmit in analog K N G - P 2 5 mode. When transmitting in digital mode the display shows ‘D’ behind the TX 171.
4.1 introduction This section contains a description of equipment and a theory of operation for the BK Radio KNG Series APCO Project 25 digital radio. To aid in understanding the operation of the equipment, schematic diagrams are found in Section VI of this manual.
theory of operation Baseband Signal processor TCXO 19.6608 MHz TX AUDIO SPEAKER AUDIO BASEBAND SIGNAL PROCESSOR DISC CONTROL / AUDIO DATA BUS µ TO CORE (1) Baseband Signal Processor - Implements filters, tone generators, and other signal processing algorithms required for analog and digital modes of operation. (2) TCXO –...
theory of operation The temperature compensated crystal oscillator (TCXO) serves as a stable frequency reference over the operating temperature of the radio. The Synthesizer IC contains programmable counters to divide and compare the VCO frequency from the feedback loop to the TCXO reference frequency and adjust the VCO control voltage in such a way that the VCO maintains a stable output frequency.
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2nd IF Control Logic 2.304 MHz Decimation Filter Mixer Formatting / To DSP TCXO Reference 19.6608 MHz Clock Synthesizer LO Synthesizer Clock VCO LO VCO Loop Filter Loop Filter 42.696 MHz 18.432 MHz vhf receiver Block diagram BK Radio Page 4-5...
theory of operation Tunable 2nd Tunable 1st Tuanble Pre Selector Filter Pre Selector Filter Crystal Filter Impedance 380-470 MHz (P400) 380-470 MHz (P400) Low Noise Variable 90MHz Harmonic Antenna Match Pre-Amplifier 440-520 MHz (P500) 440-520 MHz (P500) Gain IF Amp Filter Switch Mixer...
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The bits are then formatted and stored in a buffer in preparation for transfer via the SSI to the radio’s microprocessor. Ultimately, the sampled data is transferred to the microprocessor at 19.2 k samples per second with 16 bits of data per sample. BK Radio Page 4-7...
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theory of operation Page 4-8 Service Manual - KNG Portables...
5.3 aliGnment procedureS All alignment functions in KNG portable radios are performed electronically. You will need the KNG Editor Software and programming cable, available from BK Radio. Refer to the KNG Editor Help file for more details on using the program.
maintenance To enter the tuning section of the editor click the Tune icon, click “Tune” in the menu bar or press Alt+F. R e m o t e When the radio enters the tuning mode “Remote Programming Mode” will be P r o g r a m m i n g displayed on the radio’s LCD.
“Squelch Adjust” is assigned to a radio button or menu item. (See “Installation and Programming section of this manual.) Connect an RF Generator tuned to the frequency indicated in the program at -47 dBm BK Radio Page 5-3...
maintenance Set the Deviation to 3kHz to set the wideband preset squelch or 1.5 kHz to set the narrowband preset squelch. Adjust the radio volume knob for rated audio output Reduce the input signal to achieve 8 dB SINAD Click “Found 8db SINAD” to write the setting to the radio Clicking “Abort”...
Shields Inspect covers and shields for punctures, deep dents, and badly worn surfaces. Also check for damaged fastener devices, corrosion, and damage to finish. BK Radio Page 5-5...
maintenance flex circuits Inspect flex circuits for punctures and badly worn surfaces. Check for broken traces, especially near the solder contact points. fuse Inspect for blown fuse and check for loose solder joints. insulators Inspect insulators for evidence of damage, such as broken or chipped edges, burned areas and presence of foreign matter.
5.6 equipment Setup diaGramS TEST BOX GROUND 10 F 16 VDC 2KΩ AUDIO MIC AUDIO SOURCE 8Ω LOAD SPEAKER AUDIO SINAD INPUT RADIO 50Ω LOAD/ EXT ANTENNA ANTENNA RF POWER METER JACK figure 5-1 test Box Setup BK Radio Page 5-7...
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maintenance FREQUENCY MODULATION RADIO COUNTER METER COMMUNICATIONS TEST SET (SERVICE MONITOR) AUDIO 50 OHM RF IN LOAD RF POWER METER TEST AUDIO GENERATOR OPTIONAL 10 VDC ANTENNA MIC. AUDIO REGULATED POWER SUPPLY RADIO figure 5-2 transmitter tests Setup OPTIONAL RADIO COMMUNICATIONS AUDIO TONE...
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Parts Lists for all major assemblies arranged from the Final Assembly down to an individual part level. Each List is followed by the corresponding Assembly Drawing (if required), Schematic Diagram and Parts Placement. Parts itemized in the various lists meet BK Radio’s design specifications and are the recommended replacement parts.
final assembly illustrated parts list BLANK PAGE Page 6-4 Service Manual - KNG Portables...
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1. Flex Strip connects to J1 on RX/TX Board Final Assembly Ref. 0008-xxxxx-xxx THIS DRAWING IS PROPERTY OF RELM AND SHALL NOT BE REPRODUCED, COPIED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF PRODUCTS WITHOUT PERMISSION BK Radio Page 6-5...
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final assembly illustrated parts list BLANK PAGE Page 6-6 Service Manual - KNG Portables...
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ITM 3 2003-30964-302 ITM 4 2811-30995-600 Scr,Plas, Thread Roll,Torx,M2x.79,5mm,3.5mm Hd ITM 5 0008-30976-400 Assembly, Systems Board ITM 6 2509-30985-900 Inlay, Collar ITM 7 2513-30992-200 Inlay, Toggle-Switch ITM 8 Included in ITM 1 Speaker, 40mm, 8 Ohm BK Radio Page 6-7...
Inlay, P500 ITM 3 xxxx-xxxxx-xxx Inlay, P800 ITM 4 1411-30985-300 ITM 5 0008-30976-400 Assembly, Systems Board ITM 6 2509-30985-900 Inlay, Collar ITM 7 2513-30992-200 Inlay, Toggle-Switch ITM 8 Included in ITM 1 Speaker, 40mm, 8 Ohm BK Radio Page 6-7...
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final assembly illustrated parts list BLANK PAGE Page 6-8 Service Manual - KNG Portables...
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*Assembly includes: Display lense and keypad, on applicable models, speaker and orange top button THIS DRAWING IS PROPERTY OF RELM AND SHALL Front Assembly Ref. 0008-30994-5xx NOT BE REPRODUCED, COPIED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF PRODUCTS WITHOUT PERMISSION BK Radio Page 6-9...
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final assembly illustrated parts list BLANK PAGE Page 6-10 Service Manual - KNG Portables...
2811-30995-500 SCR, METAL THREAD ROLLIN, M2x4, 4MM, 3.5mm QTY 7 ITM 6 2856-20003-303 Nut, Spanner, M6x0.75 (.350 x .080) QTY 2 ITM 7 2858-20003-403 Nut, Spanner, 1/4-36 (.350 x .080) ITM 8 1406-30995-200 GORTEX-VENT, Gore VE40308 BK Radio Page 6-11...
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final assembly illustrated parts list BLANK PAGE Page 6-12 Service Manual - KNG Portables...
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THIS DRAWING IS PROPERTY OF RELM WIRELESS AND SHALL NOT BE REPRODUCED, COPIED OR Back Assembly Rev. 0008-30976-501 USED AS THE BASI FOR MANUFACTURE OR SALE OF PRODUCT WITHOUT PERMISSION BK Radio Page 6-13...
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final assembly illustrated parts list BLANK PAGE Page 6-14 Service Manual - KNG Portables...
1700-60284-200 FLEX CIRCUIT, BOARD TO BOARD, P-150 ITM 8 2800-31000-500 SPACER, MIC, KNG-P SERIES ITM 9 1310-20000-500 MIC, ELEMENT, POM-3542P-R, KNG ITM 10 1411-40001-800 BUSHING, MIC, MOLDED, EP ITM 11 1411-40001-800 GASKET, FOAM, MIC, KNG-P SERIES BK Radio Page 6-15...
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Systems assembly illustrated parts list BLANK PAGE Page 6-16 Service Manual - KNG Portables...
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SYSTEMS BOARD DURING TEST. FRONT SIDE BACK SIDE THIS DRAWING IS PROPERTY OF RELM AND SHALL Systems Board Assembly Ref. 0008-30976-400 NOT BE REPRODUCED, COPIED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF PRODUCTS WITHOUT PERMISSION BK Radio Page 6-17...
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Systems assembly illustrated parts list BLANK PAGE Page 6-18 Service Manual - KNG Portables...
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Systems Board illustrated parts list Parts List, 30976-400, Systems Board, KNG Portable reference part number description notes 3134-30950-406 IC,REG,VLDO,ADJ,300MA,LTC3025,DC6 3134-30670-625 IC,SW,USB 2.O,TS3USB31,QFN-RSE 2390-30957-104 TCXO,19.6608MHz,+/-2.5PPM, 2.5x3.2mm,SMD 2384-30918-102 Xtal,MS1V-T1K,32.768KHz,12.5pF.SMD Page 6-30 Service Manual - KNG Portables...
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Systems Board Systems Board THIS DRAWING IS PROPERTY OF RELM AND SHALL NOT BE Ref. 8888-30976-400 REPRODUCED, COPIED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF PRODUCTS WITHOUT PERMISSION BK Radio Page 6-31...
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Systems Board illustrated parts list BLANK PAGE Page 6-32 Service Manual - KNG Portables...
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Systems Board Systems Board Ref. 3333-30976-400 Sheet 1 of 5 BK Radio Page 6-33...
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Systems Board illustrated parts list BLANK PAGE Page 6-34 Service Manual - KNG Portables...
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Systems Board Systems Board Ref. 3333-30976-400 Sheet 2 of 5 BK Radio Page 6-35...
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Systems Board illustrated parts list BLANK PAGE Page 6-36 Service Manual - KNG Portables...
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Systems Board Systems Board Ref. 3333-30976-400 Sheet 3 of 5 BK Radio Page 6-37...
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Systems Board illustrated parts list BLANK PAGE Page 6-38 Service Manual - KNG Portables...
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Systems Board Systems Board Ref. 3333-30976-400 Sheet 4 of 5 BK Radio Page 6-39...
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Systems Board illustrated parts list BLANK PAGE Page 6-40 Service Manual - KNG Portables...
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Systems Board Systems Board Ref. 3333-30976-400 Sheet 5 of 5 BK Radio Page 6-41...
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Systems Board illustrated parts list BLANK PAGE Page 6-42 Service Manual - KNG Portables...
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rx/tx assembly illustrated parts list BLANK PAGE Page 6-44 Service Manual - KNG Portables...
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This shield is bridged to the Front-End shield (ITEM 16) via the shield bridge (ITEM 21) and secured by solder. RX/TX Assembly Rev. 0008-30976-502 THIS DRAWING IS PROPERTY OF RELM AND SHALL NOT BE REPRODUCED, COPIED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF PRODUCTS WITHOUT PERMISSION BK Radio Page 6-45...
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rx/tx assembly illustrated parts list BLANK PAGE Page 6-46 Service Manual - KNG Portables...
integrated circuit data j-k flip-flop The flip-flop logic element is the basic data storage element of the digital logic. It has two outputs that are always at opposite logic levels. That is, when one output is HI the other is LO. The flip-flop will remain in a particular state until that state is changed by and input signal.
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Noise immunity demands the addition of RB which requires that the input reach a certain magnitude after passing zero before the output will switch. WHERE V = MOST NEGATIVE Vo = MOST POSITIVE Vo BK Radio Page 7-3...
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integrated circuit data Inverting Op-Amp Amplifier A voltage applied at the inverting (-) input will cause an output voltage (Vo) of opposite polarity as the applied voltage. The relationship of the input and the output voltages is shown in the following equations: V0 = (Rf/Ri) Vi Gain = -(Rf/Ri) From the above equation, a zero input voltage should give a zero output if Rn has been adjusted to the...
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This is a special case of the non-inverting amplifier previously discussed, with Rf equal to zero. Therefore the relationship of the input and output voltage reduces to Vo = Vi, or unity gain. It is used to provide high input impedance and buffering action. BK Radio Page 7-5...
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integrated circuit data threshold detector Threshold detectors use positive feedback to toggle the op-amp output when the input voltage (Vi) is above or below a voltage level (V threshold) set by R2 and R3. R4 provides the positive feedback required for a clean switch from one saturation level to another. The voltage polarity (Va) determines the initial output state of the amplifier and the polarity of the threshold being detected.
The lead has a minimum of contact area and has a slight overhang. The lead is not centered on the pad. 0.040” 0.040” The lead is at the edge of the pad. The contact area is not less than 0.040”. BK Radio Page 7-7...
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integrated circuit data The illustrations below show acceptable ways of mounting flat leaded components. preferred Lead is centered within the confines of the pad. Heel rises before leaving pad area. Missaligned minimum acceptaBle Lead misalignment is not more than 50%. Missaligned The illustration below shows an unacceptable way of mounting a flat leaded component.
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Solder fillet height is to the top of the end termination. There is good wetting SIDE VIEW TOP VIEW minimum acceptaBle The fillet height is 10% of the end termination. SIDE VIEW There is incomplete wetting of the pad and termination BK Radio Page 7-9...
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integrated circuit data The illustrations below show acceptable amounts of solder applied to surface mount chips. preferred the solder fillet is continuous around the perimeter of the chip termination. There is good wetting af the land and termination. Fillet is approximately 30% of the termination height. minimum acceptaBle There is 50% solder coverage of the perimeter of the chip.
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The fillet is concave. There is good wetting. The chip is raised less than 0.020”. <0.020” acceptaBle The solder has floated the chip off its adhesive (if used) but the amount of float is not greater than 0.020”. BK Radio Page 7-11...
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integrated circuit data The criteria for acceptable and unacceptable end conditions in chip components are listed below. You cannot have more than 20% of any one of the surfaces of the end termination removed as a result of the soldering operation. The end termination consists of five surfaces.
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The length part of the solderable end cap of the device should overlap the mounting pad by at least 0.010” (the thickness of two pieces of notebook paper). LESS THAN 0.010” OVERLAP ACCEPTABLE GREATER THAN 0.010” OVERLAP REWORK BK Radio Page 7-13...
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integrated circuit data The illustrations below show the amount of chip misalignment that is acceptable. The length part of the solderable end cap of the device should not be misaligned with the mounting pad by more than 50% of its length. RESIST preferred The part is evenly aligned between the two conductor lands...
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