VHF FM REPEATER

TKR-750

SERVICE MANUAL

2001-1 PRINTED IN JAPAN B51-8556-00 (N) 1435
Knob (DC source) (K29-9106-04) Panel (Outer) (A62-0840-03) Knob (VOL) (K29-5389-03)

Panel assy (A62-0934-03)

Key top (K29-5460-02)
Modular jack (E08-0543-05)

CONTENTS

GENERAL.. 2 SYSTEM SET-UP.. 2 OPERATING FEATURES. 3 REALIGNMENT.. 11 INSTALLATION.. 13 MODIFICATION.. 15 DISASSEMBLY FOR REPAIR.. 16 CIRCUIT DESCRIPTION. 17 SEMICONDUCTOR DATA.. 23 DESCRIPTION OF COMPONENTS. 25 PARTS LIST.. 27 EXPLODED VIEW. 37 PACKING.. 39 ADJUSTMENT.. 40 TERMINAL FUNCTION.. WIRING.. PC BOARD VIEWS RX PLL/VCO (X58-4780-10). TX PLL/VCO (X58-4790-10). DISPLAY UNIT (X54-3330-20). FINAL UNIT (X45-3620-XX). TX-RX UNIT (X57-6260-XX) (A/2). TX-RX UNIT (X57-6260-XX) (B/2). SCHEMATIC DIAGRAM. BLOCK DIAGRAM.. KES-4 (EXTERNAL SPEAKER).. SPECIFICATIONS. 92 93

GENERAL / SYSTEM SET-UP

INTRODUCTION

SCOPE OF THIS MANUAL

This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment. It contains all required service information for the equipment and is current as of the publication date. Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions. These are issued as required.

PERSONNEL SAFETY

The following precautions are recommended for personnel safety : DO NOT transmit until all RF connectors are verified secure and any open connectors are properly terminated. SHUT OFF and DO NOT operate this equipment near electrical blasting caps or in an explosive atmosphere. This equipment should be serviced by a qualified technician only.
ORDERING REPLACEMENT PARTS
When ordering replacement parts or equipment information, the full part identification number should be included. This applies to all parts : components, kits, or chassis. If the part number is not known, include the chassis or kit number of which it is a part, and a sufficient description of the required component for proper identification.

SERVICE

This radio is designed for easy servicing. Refer to the schematic diagrams, printed circuit board views, and alignment procedures contained in this manual.

SYSTEM SET-UP

Merchandise received Choose the type of transceiver Frequency range (MHz) TX/RX 146~174 TX/RX 136~150 RF power 50W 50W Type K,E K2
See page 11. Repeater A personal computer (IBM PC or compatible), programming interface (KPG-46), programming & setup and programming software (KPG-66D) are required for programming. DC power supply or duplexer? NO YES
Installation in the optional space

External speaker? NO

KES-4 installation

Delivery

OPERATING FEATURES
1. Controls and Functions

1-1. Front Panel

1 Speaker 2 CH/STATUS Display
Two, 7-segment digits display the channel number or status.
7 Programmable Function keys
Press these keys to activate their programmable functions.
PF1 key (left side) PF2 key PF3 key PF4 key PF5 key PF6 key (right side) Default : None (No function) Default : Repeat disable/enable Default : TX disable/enable Default : Take over Default : Monitor on/off Default : Channel up

3 VOLUME control

Rotate to adjust the volume.
4 DC source switch 5 Dc source indicator
Lights green when DC source is applied from the DC 13.6V jack (DC 13.2V jack on E type versions). Lights red when DC source is applied from the BACK UP battery terminal.

8 BUSY indicator

Lights green while a signal is being received.

6 MIC jack

Connect a microphone to this 8-pin modular jack.

9 TX indicator

Lights red while transmitting.

1-2. Rear Panel

1 TX OUT jack
Connect a TX antenna or a duplexer to this receptacle.
5 DC 13.6V (K type) / DC 13.2V (E type) jack
Connect a 13.6 V (K type) or 13.2 V (E type) DC power supply to this jack.

2 CONTROL I/O jack

Connect an external programming device or repeater controller to this DB-25 interface.
6 BACKUP battery terminal 7 TEST/SPKR jack
Test input/output jack. Connect an external speaker to this jack.

3 FUSE

Insert 15 A blade fuses into these fuse holders.

4. Trigger Assignment

The Programmable Functions described above can be assigned to PF keys, AUX input, Save on/off, Start up, and Power supply according to following table. In the last column of the table, when the Programmable Functions is assigned to any PF keys, it expresses that the LED in the PF key turns on either conditions. Yes expresses that the trigger is available the Programmable Function. No expresses that the trigger is not availabale the Programmable Function.
Trigger Function AUX Out 1~5 (I/O 1~6) Off AUX Out 1~5 (I/O 1~6) On AUX Out 1~5 (I/O 1~6) On/Off Channel 1~16, Up/Down CW ID On CW Message 1~8 On Display Off Display On Display On/Off Hold Time Enable Hold Time Disable Hold Time Disable/Enable Local Tx Disable Local Tx Enable Local Tx Disable/Enable Monitor Off Monitor On Monitor On/Off Monitor Momentary Multi Table Sub Multi Table Main Multi Table Main/Sub QT/DQT Dec Disable QT/DQT Dec Enable QT/DQT Dec Disable/Enable QT/DQT Enc Disable QT/DQT Enc Enable QT/DQT Enc Disable/Enable Repeat Disable Repeat Enable Repeat Disable/Enable Reset DC Power Save Off DC Power Save On DC Power Save On/Off Scan Off No No Yes Yes Yes Yes No No Yes No No Yes No No Yes No No Yes Yes No No Yes No No Yes No No Yes No No Yes Yes No No Yes No PF keys AUX input Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Save on/off Yes Yes No Yes Yes Yes Yes Yes No Yes Yes No Yes Yes No Yes Yes No No Yes Yes No Yes Yes No Yes Yes No Yes Yes No No No No No Yes Yes Yes No Yes Yes Yes Yes Yes No Yes Yes No Yes Yes No Yes Yes No No Yes Yes No Yes Yes No Yes Yes No Yes Yes No No Yes Yes No Yes Start up Power supply Yes Yes No Yes Yes Yes Yes Yes No Yes Yes No Yes Yes No Yes Yes No No Yes Yes No Yes Yes No Yes Yes No Yes Yes No No Yes Yes No Yes Turns on in ON status. Do not turn on. Turns on while transmitting. Turns on while transmitting. Turns on in ON status. Turns on in Disable status. Turns on in Disable status. Turns on in ON status. Turns on in ON status. Turns on in Sub status. Turns on in Disable status. Turns on in Disable status. Turns on in Disable status. Do not turn on. Do not turn on. Condition of LED in he PF key on
Trigger Function Scan On Scan On/Off Scrambler Off Scrambler On Scrambler On/Off Squelch Off Squelch On Squelch On/Off Squelch Momentary Take Over On/Off Test Tone Off Test Tone On Test Tone On/Off TOT Disable TOT Enable TOT Disable/Enable TX Disable TX Enable TX Disable/Enable None No Yes No No Yes No No Yes Yes Yes No No Yes No No Yes No No Yes Yes PF keys AUX input Yes Yes Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Save on/off Yes No Yes Yes No Yes Yes No No No Yes Yes No Yes Yes No Yes Yes No Yes Yes No Yes Yes No Yes Yes No No No Yes Yes No Yes Yes No Yes Yes No Yes Start up Power supply Yes No Yes Yes No Yes Yes No No No Yes Yes No Yes Yes No Yes Yes No Yes Turns on in ON status. Turns on in ON status. Turns on in OFF status. Turns on in OFF status. Turns on in ON status. Turns on in ON status. Turns on in Disable status. Turns on in Disable status. Do not turn on. Condition of LED in he PF key on

Current : When any PTT as described above is active while the repeater is in use or the duplex-base station is receiving, the paired encode QT/DQT associated with receiving QT/DQT is transmitted. When any PTT is active while the repeater or the duplex-base station is in idle period, the Primary encode QT/DQT is transmitted. Primary : When any PTT (provided that the Priority of any PTT is higher than the Priority of Repeat PTT) is active while the repeater is in use, the encode QT/DQT changes paired encode QT/DQT to Primary while continuing to transmit. When any PTT is active while the repeater is in idle period, the Primary encode QT/DQT is transmitted. In the base station, the Primary encode QT/DQT is always transmitted regardless of the receiver status. 1) if a RF carrier and a valid QT/DQT is present. The receiving channel number is displayed and the received audio is heard from a speaker. 2) if a RF carrier is present, providing that the Monitor On function is executed. 3) if the Squelch Off function is executed. Scanning stops on the channel being scanned when Squelch Off is executed, the channel number is displayed and the received audio is heard from a speaker. 4) if a local microphones hook is in off hook status, providing that the Off Hook Scan function is set to Disable. Scanning stops on the Revert channel, but the audio is not heard until a valid signal is received. When the received call is ended, scanning automatically resumes after the period set in Dropout Delay Time function has expired. When the Scan Off function is executed, the TKR-750 inhibits scanning and displays the selected channel.
7-3. QT Reverse Burst Time
During repeat with QT tones, the repeater re-transmits a phase-shifted burst of the QT tone (reverse burst) when it detects the radio using the repeater has un-keyed and also sent a reverse QT burst (squelch-tail elimination). This mutes a receiving radios speaker audio before its receiver circuit shuts off causing squelch tail noise in the speaker audio. The TKR-750 can select the time between 140 to 200 ms that the QT reverse burst is sent. Typically this time should not have to be adjusted from the default value. The transmission of the QT reverse burst can be also inhibited if the QT Reverse Burst function is set to No.

8-2. Scan Sequence

1) Normal Scan : When no Priority channel is set, scanning of ADD channels is done in ascending order. 2) Single Priority Scan : The Priority channel is set as either a fixed channel or a selected channel. When Priority channel is set, Priority channel and non Priority channel are scanned by turns. When scanning stops on the non Priority channel, calls from the Priority channel are still checked at set intervals while scanning is stopped. This operation is called Look Back and the interval period is selected by the Look Back Time function.
7-4. DQT Turn Off Code Time
During repeat with DQT tones, the repeater re-transmits a specific turn-off code when it detects the radio using the repeater has un-keyed and also sent the turn-off code (squelch-tail elimination). This mutes a receiving radios speaker audio before its receiver circuit shuts off causing squelch tail noise in the speaker audio. The TKR-750 can select the time between 140 to 200ms that the DQT turn-off code is sent. Typically this time should not have to be adjusted from the default value.

8-3. Revert Channel

The Revert channel is a channel that is used to transmit during scanning. The time from the end of transmission on Revert channel to the time scanning automatically resumes is set in Dwell Time function. The Revert channel types are Last Called, Last Used, Selected, Selected + TalkBack, Priority, and Priority + TalkBack. 1) Last Called : The TKR-750 reverts to the channel upon which a call was last received even if scanning has resumed (power on default = selected channel). 2) Last Used (with TalkBack) : The TKR-750 reverts to the channel that was last transmitted on (power on default = selected channel). However, if a call is received on a channel other than the last transmit channel and PTT is pressed before scanning resumes, the transceiver talks back on the current receive channel. 3) Selected : The transceiver reverts to the channel set by the function prior to scan initiation. 4) Selected+TalkBack : The TKR-750 reverts to the channel set by the Channel X functions or Channel Select function prior to scan initiation. However, if a call is received on a channel other than the selected channel and PTT is pressed before scanning resumes, the transceiver talks back on the current receive channel. 5) Priority : The TKR-750 always reverts to the Priority channel.

Fig. 4-3

MODIFICATION
1. Modification for Sinking the Collector Current Up
Auxiliary output 1 and 2 can each be modified to sink up 600mA of the collector current. The following modification should be installed when Auxiliary output 1 or 2 is used to control external equipment. 1. Remove D625, R755, and R769 for Auxiliary output 1 (D624, R756, and R770 for Auxiliary output 2) on the component side of the control section for TX-RX unit PCB. 2. Install $Q608, $Q612, and $R761 for Auxiliary output 1 ($Q607, $Q611, and $R759 for Auxiliary output 2) on the component side of the control section for TX-RX unit PCB. $Q607, $Q608, $Q611, $Q612 : DTD114EKA $R759, $R761 : 3.9k (RK73GB1J392J) chip resistor. 3. Change R801 for Auxiliary output 1 (R797 for Auxiliary output 2) from 1k (RK73GB1J102J) to 0 (R92-125205). By making this modification, Auxiliary output 1 and 2 can now sink up to 600mA each.

2. DC Source Switch

To prevent the power supply from turning off due to misoperation of the DC source switch on the front panel or accidents (tampering) after installation, the main unit can be kept on regardless of the on/off of the DC source switch on the front panel. Short the PSW land near K1 relay by soldering.
TX-RX unit (A/2) Component side

CF1 WIDE

CF2 NARROW
TX-RX unit (B/2) Component side

R756 $Q607

R770 $Q611 $R769 R769 C681 CN605

$R759 R755

$Q608 $Q612
5V Add $R761 ($R759) 3.9k Remove D625 (D624) DA204U Add $Q608 ($Q607) DTD114EKA Remove R755 (R756) 0 Add $Q612 ($Q611) DTD114EKA Remove R769 (R770) 0 TEST/ SPKR 5V

Shift register IC623

MODIFICATION / DISASSEMBLY FOR REPAIR
3. Trickle Charge for Backup Battery
If the external DC power supply is connected to the Main DC connector and a backup battery (12V rechargeable type) is connected to the Backup connector at the same time, the battery can be trickle-charged from the external DC power supply with a maximum current of 0.5A. Short the CHARGE land near R61.

DISASSEMBLY FOR REPAIR

How to Remove the Panel Assy (ABS)
Note : You can remove the panel assembly (ABS) without removing the top panel (A62-0840-03). 1. To remove panel (TX-RX, 2 ), loose 6 screws ( 1 ). 2. To remove panel assembly (Front, 4 ), loose 6 screws ( 3 ). 3. The panel assembly (ABS) is security fastened by 4 tabs ( 5 ) on top and bottom. You can remove the panel assembly by pulling to front while you are pulling up the tabs.
1. Make this modification after removing the DC power supply and battery for safety. 2. When the DC power supply is connected after the modification, DC voltage is output to the Backup connector. Be careful during setup. 3. When the backup battery is used for a long time, remove the battery from the repeater and recharge it because the trickle charge is not sufficient for recharging a completely discharged battery.

IF AMP IF AMP Q9 Q8
RX VCO A3 (X58-478) VCO A VCO B
fRX+44.85MHz DET CF1 (Wide) SW D4 SW D3 X1 44.395MHz
CF2 (Narrow) NOISE AMP Q7 455kHz W/N
TX-RX unit (X57 B/2): Control AMP DEI DEO IC608 AINR RD ASQ CPU RSSI IC604 IC614 CODEC LPF AMP IC619 (B/2) IC619 (A/2) RXI RXO AOUTR RA IC621 AM SPM

IC615 DAC

IC622 SW

Q606 MUTE

IC629 AF AMP

INV Q605

INT SP
Fig. 1 Receiver circuit 17

2-4. Audio Amplifier

The audio amplifier circuit is located in control section of TX-RX unit (X57-626 B/2). The recovered audio signal obtained from IC9 is amplified by IC608, input to the AINR terminal of CODEC IC (IC614), and audio processed by DSP (IC618). The processed audio signal from AOUTR terminal of IC614 is amplified by IC619 (B/2) to a sufficient level, antialiasing filtered by IC619 (A/2). The audio signal goes to an electronic volume (IC615) V3/V4, to the input of multiplexer IC (IC622), and is amplified to drive a loudspeaker by an audio power amplifier (IC629). The 4W audio output can be provided to external 4 ohms speaker through the 15-pin test connector SPO, SPG on the rear panel.

3. Transmitter Circuit

The transmitter circuit consists of the following circuits : 3-1 microphone circuit, 3-2 modulation level adjustment circuit, 3-3 driver and final power amplifier circuit, and 3-4 automatic power control circuit.

3-1. Microphone Circuit

The signal from the microphone is passed through AGC circuit located in display unit (X54-333), so that it does not saturate. This circuit consists of IC501, D501, D502, Q501, and Q502. The AGC is operated by controlling the + and side levels of amplitude using the current obtained by positive and negative detection of the amplified audio signal. The audio signal goes to control section of TX-RX unit (X57626 B/2) from display unit (X54-333). The transmit audio signal goes to the input of the multiplexer IC (IC605) for microphone muting. The audio signal is amplified by IC610, input to the AINL terminal of CODEC IC (IC614), and audio processed by DSP (IC618). The processed audio signal from the AOUTL terminal of IC614 is amplified by IC616 (B/2) to a sufficient level, anti-aliasing filtered by IC616 (A/2), and amplified by the summing amplifier IC611 (A/2).

2-5. Squelch Circuit

The output signal from IC9 enters FM IC again, then passed through a band-pass filter. The noise component output from IC9 is amplified by Q7 and rectified by D5 to produce a DC Voltage corresponding to the noise level. The DC voltage is sent to the analog port of the CPU (IC604). IC9 outputs a DC voltage (RSSI) corresponding to the input of the IF amplifier.
3-2. Modulation Level Adjustment Circuit
The output of the summing amplifier IC611 (A/2) is passed to an electronic volume (IC615) for maximum deviation adjustment before being applied to a varactor diode in the voltage controlled oscillator (VCO) A2 located in TX-RX unit (X57-626 A/2).

Main DC D8 D9 R61 Land Backup battery 120mA K1 (Relay) Final unit (A/2) TX-RX unit (A/2) TX-RX unit (B/2) R54 +B

5-7. Base-Band Circuit

The base-band circuit switches between the modulation signal to the transmitter circuit, and remote audio and adjusts their levels. This circuit consists of IC605, IC607, IC611, IC615, and IC617. Modulation inputs include local microphone input, lowspeed data (LSD), high-speed data (HSD), external audio input (TA), and external data input (TD), and demodulation outputs include receive audio output (RA), and receive data output (RD). The multiplexer (IC605) changes signals, the electronic volume (IC615) adjusts the level, and the operational amplifier (IC607, IC611, IC617) amplifiers and sums signals.

BUP IC604 CPU

Fig. 9 DC source switching relay circuit 6-2. SB Switching Relay Circuit
1. SB (Switched +B) is supplied through the relay (K1) in the TX-RX unit A/2. When S507 (DC source switch) in the display unit is turned ON, the relay (K1) is turned ON to output SB. 2. If +B exceeds 18V, the relay is forcibly turned OFF by D12 and Q25 to interrupt the power and protect the main unit.

K1 +B R165 D12 R166 SB

5-8. RS-232C Circuit
The RS-232C circuit connects the RS-232C serial port of a personal computer directly to this model to perform FPU operation. The FPU operation can also be performed by connecting a programming cable (KPG-46) to the local microphone on the front panel. But, if the D-sub connector on the rear panel is used, the programming cable is not required. The 232C driver IC (IC620) changes the TTL-232C level. The firmware can only be rewritten with the local microphone on the front panel.

Q25 Q24

Land (PSW)
5-9. Power Supply Circuit
The power supply circuit generates power to operate the CPU, DSP, flash ROM, bi-directional buffer, and base-band circuit. This circuit consists of IC624, IC625, IC626, IC627, IC628, and IC630.
Display unit (Front panel)
Fig. 10 SB switching relay circuit

SEMICONDUCTOR DATA

Main CPU : 30622M4-113GP (TX-RX unit IC604)

s Pin Function

Pin No. 1~Name IO5~IO1 BYTE CNVss ENT ENR Reset Xout Vss Xin Vcc NMI BUP I/O I/O O O I I Function Aux I/O No.5~No.1 (Acc D-sub 25 pin) 5V GND TX PLL IC enable RX PLL IC enable Microcomputer reset input 14.7456MHz GND 14.7456MHz 5V Not used Backup battery detect H : Backup, L : Main 17 TEMP I Temperature detect for fan action H : Temp high, L : Temp low 18 EPTT I Acc PTT (Acc D-sub 25 pin) H : Off, L : On 27 CLK DAT SFT LD1 STB3 LD2 STB4 RS SC O O O O O O O O O Common clock Common data Beat shift H : On, L : Off 73 LDT I 72 LDR I Pin No. 50~63~Name HLDA BCLK RD BHE WR STB2 INTx HCS CS0 A19 A18~A9 Vcc A8 Vss A7~A0 EMON I/O O O O O O O O O O O O I Not used Not used Flash ROM WR/DSP HDS1 Not used Flash ROM WR/DSP HDS2 Control shift register STB DSP interrupt DSP HCS Flash ROM CS Not used Flash ROM address bus 5V Flash ROM address bus GND Flash ROM address bus Acc monitor (Acc D-sub 25 pin) H : Off, L : On RX VCO lock detect H : Lock, L : Unlock TX VCO lock detect H : Lock, L : Unlock 74,75 76~78 79~100 KEY5,KEY4 KEY3~KEY1 D7~D0 FWD RSSI ASQ VLI BATT AI1 AI2 AVss AI3 Vref AVcc STB1 SOE IO6 O I I/O I I I I I I I I O O I/O Key matrix output Key matrix input Flash ROM data bus RF power down level input RSSI level input Squelch level input Volume level input Power supply voltage level input Aux input No.1 (Acc D-sub 25 pin) Aux input No.2 (Acc D-sub 25 pin) GND Aux input No.3 (Acc D-sub 25 pin) 5V 5V Display shift register STB Shift register common OE Aux I/O No.6 (Acc D-sub 25 pin) H : Off, L : On Function

Control D/A converter LD Control shift register STB TX/RX D/A converter LD TX/RX shift register STB DSP reset H : Off, L : On
Squelch control (Acc D-sub 25 pin) H : Inactive, L : Active
PTT TXD1 RXD1 SCLK SDAT TXD0 RXD0 CP DP RDY ALE HOLD

I O I O I/O O I O O I

Mic PTT Mic TXD

H : Off, L : On

Mic HOOK/RXD EEPROM clock EEPROM data Acc TXD (Acc D-sub 25 pin) Acc RXD (Acc D-sub 25 pin) PLL IC clock PLL IC data CPU ready input Not used Not used
DSP : 320VC5402PGE (TX-RX unit IC618)
Pin No. 1,6 7~27 Name NC1,NC2 Vss DVDD A0 HD0 A1~A5 NC3 HAS Vss NC4 CVDD HCS HR/W READY PS DS IS R/W MSTRB IOSTRB MSC XF I/O O I/O O I I I I O O O O O O O O Function Not used (No connection) GND VDD for I/O pins (+3.3V) Not used (No connection) HPI data bus Not used (No connection) Not used (No connection) HPI address strobe (Pull up) GND Not used (No connection) VDD for core CPU (+1.8V) HPI chip select HPI read/write Data ready (Pull up) Not used (No connection) Not used (No connection) Not used (No connection) Not used (No connection) Not used (No connection) Not used (No connection) Not used (No connection) CODEC control H : Power down, L : Active 34 35~HOLDA IAQ HOLD BIO MP/MC DVDD Vss NC5~NC8 HCNTL0 Vss BCLKR0 I I I I I Not used (No connection) Not used (No connection) Hold (Pull up) Serial data syncronize input Not used (Pull down) VDD for I/O pins (+3.3V) GND Not used (No connection) HPI control 0 GND Receive clock input (SCLK : 516.09375kHz) BCLKR1 BFSR0 I Not used (No connection) Frame sync. for receiver input (LRCK : 16.128kHz) 71~HRDY DVDD Vss HD1 BDX0 BDX1 IACK HBIL NMI INT0 INT1 INT2 INT3 CVDD HD2 Vss NC9~NC12 DVDD Vss CLKMD1 CLKMD2 CLKMD3 I/O O I I I I I I I/O I I I 54 BFSX1 I Vss HINT/TOUT1 CVDD BFSX0 O I 49 BCLKX1 O BDR0 HCNTL1 BDR1 BCLKX0 I I I Pin No. 44 Name BFSR1 I/O I Function Frame sync. for receiver input (LRCK : 16.128kHz) Serial data receive input HPI control 1 Not used (No connection) Transmit clock input (SCLK : 516.09375kHz) Master clock output (MCLK : 4.12875MHz) GND Boot mode select (Pull up) VDD for core CPU (+1.8V) Frame sync. for transmitter input (LRCK : 16.128kHz) Frame sync. for transmitter input (LRCK : 16.128kHz) Not used (No connection) VDD for I/O pins (+3.3V) GND HPI data bus Serial data transmit output Not used (No connection) Not used (No connection) Byte identification (HPI) Not used (Pull up) Command interrupt from host CPU Not used (Pull up) Boot mode select (Pull up) Not used (Pull up) VDD for core CPU (+1.8V) HPI data bus GND Not used (No connection) VDD for I/O pins (+3.3V) GND Clock mode select (Pull down) Clock mode select (Pull up) Clock mode select (Pull down)

23 2B 1B 1B 1D 3A 3C 1F 1F 1F 2C,3D 2C,3D 2C,3D 2C 1C 2C 1E 1E A10-4037-01 A62-0836-04 A62-0837-04 A62-0840-03 A62-0933-13 A62-0934-03 B10-2635-04 B10-2636-04 B11-1259-04 B62-1327-10 B72-1797-04 B72-1900-14 B72-1932-04 E30-3414-05 E30-3418-05 E30-3419-05 E30-3427-15 E31-3228-05 E37-0808-05 E37-0902-05 E37-0903-05 E37-0904-05 E37-0905-05 CHASSIS PANEL PANEL PANEL PANEL ASSY PANEL ASSY FRONT GLASS F-KEY FRONT GLASS PC SHEET FILTER F-KEY INSTRUCTION MANUAL MODEL NAME PLATE MODEL NAME PLATE MODEL NAME PLATE DC CORD ANTENNA CABLE (BNC) ANTENNA CABLE (N) DC CORD (ACC) LEAD WIRE WITH CONNECTOR (15P) LEAD WIRE WITH CONNECTOR LEAD WIRE WITH TERMINAL (DC +) LEAD WIRE WITH TERMINAL (DC -) LEAD WIRE WITH CONNECTOR (D-SUB) LEAD WIRE WITH CONNECTOR (SP)

K K2 E

1B 1B 2C 3B

FINAL UNIT (X45-3620-XX)

C1,2 C3 C7 C9,10 C11 CK73GB1H102K C90-2146-05 CK73GB1H102K CK73GB1H102K CC73GCH1H470J CHIP C ELECTRO CHIP C CHIP C CHIP C

-10 : K,E -11 : K2

1000PF 100UF 1000PF 1000PF 47PF K 25WV K K J

2B 2C 1C,1E 2C 1C

K,E K2 K,E
1C 1B 3B 2B,3B 3C,2D 1F 1F 1E 1F 1E 1F
FINAL UNIT (X45-3620-XX) Ref. No. C42 C43,44 C46 C47 C48,49 C50,51 C54 C55 C57 C59,60 C62 C64 C68 C69 C71,72 C71,72 C74 C77 C80-87 C90 C91 C92 C94 C96 C97 C98 C99 C106-109 C110 C112 C112 C113 C116 C116 C118 C136,137 C138 C138,139 C139 C140 C141 C142 C151,152 C151,152 CN1,2 CN3 CN4 CN5 CN6-8 F1 CN51,52 L2 L3 L4 L5 L6 L7 L8 Address New parts Parts No. CK73FB1H103K CK73GB1H102K C93-0603-05 CM73F2H121J C93-0563-05 C93-0565-05 C93-0601-05 CK73GB1H103K C90-2143-05 CK73GB1H102K CK73FB1H102K CK73GB1H102K CK73GB1H102K C93-0564-05 C93-0564-05 C93-0565-05 C93-0567-05 C93-0565-05 CK73GB1H102K CK73GB1H102K C92-0777-05 C93-0601-05 CC73GCH1H100D CC73FCH1H270J CC73FCH1H040C CK73GB1H102K C90-2143-05 CK73GB1H102K C92-0628-05 CM73F2H181J CM73F2H271J CM73F2H121J CM73F2H181J CM73F2H241J CK73FB1E474K CK73GB1H102K CM73F2H221J CM73F2H181J CM73F2H241J CC73FCH1H100D C93-0601-05 CC73FCH1H020C CM73F2H390J CM73F2H680J E04-0154-05 E40-5632-05 E40-3246-05 E40-5703-05 E23-0462-05 F53-0217-05 J13-0071-05 L40-4775-34 L40-6875-34 L34-4519-05 L34-4518-05 L34-4519-05 L34-4523-05 L34-4517-05 CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C ELECTRO CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C CHIP C Description 0.010UF 1000PF 1000PF 120PF 18PF 27PF 680PF 0.010UF 47UF 1000PF 1000PF 1000PF 1000PF 22PF 22PF 27PF 39PF 27PF 1000PF 1000PF K K K J J J K K 25WV K K K K J J J J J K K Destination Ref. No. L9-11 L12 L13 L15 L15 L16,17 R1 R6 R7 R8 R9 R10 R11 R13 R15 R17 R18 R18 R19 R20,21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R34,35 R36 R37 R38 R40 R40 R41 R43 R45 R48 R49 R50 R52,53 R55 R56 R57 R58 R59 R60 R61 R62,63 R64 R65,66 R68 VR1 K1 AIR-CORE COIL AIR-CORE COIL D1 New Address parts Parts No. L34-4520-05 L34-4523-05 L40-3375-34 L40-4785-34 L40-8285-34 L40-8275-92 RK73FB2A100J RK73GB1J220J RK73GB1J472J RK73FB2A100J RK73FB2A470J RK73FB2A101J RK73GB1J472J RK73GB1J471J R92-1217-05 RK73FB2A183J RK73EB2B180J RK73EB2B330J RK73FB2A473J R92-1252-05 R92-1215-05 RK73FB2A473J RK73FB2A563J RK73GB1J473J RK73GB1J101J RK73GB1J471J RK73GB1J105J RK73GB1J471J RK73GB1J222J RK73GB1J471J RK73GB1J104J RK73GB1J393J R92-1252-05 R92-0670-05 RK73GB1J103J RK73FB2A101J RK73FB2A121J R92-1252-05 RK73FB2A101J RK73GB1J102J RK73GB1J471J R92-1217-05 RK73EB2B222J RK73GB1J102J RK73GB1J102J R92-1317-05 RK73GB1J224J RK73GB1J104J RK73GB1J393J RK73GB1J154J R92-2687-05 R92-0670-05 RK73GB1J5R6J RK73GB1J821J RK73EB2B331J R12-6427-05 S76-0426-05 1SS226 Description AIR-CORE COIL AIR-CORE COIL SMALL FIXED INDUCTOR (33NH) SMALL FIXED INDUCTOR (470NH) SMALL FIXED INDUCTOR (820NH) SMALL FIXED INDUCTOR (82NH) CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R CHIP R RESISTOR 4.7K 100 4.7K OHM 18K 47K 0 OHM 470 47K 56K 47K 1.0M 470 2.2K 470 100K J J J J J J J J J J J J J J J J J J J J J J J 1/10W 1/16W 1/16W 1/10W 1/10W 1/10W 1/16W 1/16W 1/10W 1/8W 1/8W 1/10W 1/2W 1/10W 1/10W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W K2 K,E Destination

EXPLODED VIEW

3 (FW) M2.6 x 6 M4 x 6 M4 x 14 M4 x 20 BLK M3 x 6 (F) M4 x 8 (F) BLK M3 x 6 (OC) BLK M3 x 14 (Bi) M3 x 8 M4 x 6 (Bi) BLK M2.6 x 6 (Br-Tap) M3 x 5 (Br-Tap) BLK M3 x 6 (Br-Tap) BLK

Qx10 Qx11

Nx3 G 701 Gx2

Ox4 Fx4 Ax2

TX-RX (A/2) Final (A/2)

Final (B/2)

G Gx2 703

Bx2 34

Dx3 Qx6

TX-RX (B/2)

23 IC629

Nx2 Hx3 Hx3 Qx5

704 706

3 Display (B/2)

Display (A/2)
Parts with the exploded numbers larger than 700 are not supplied.

PACKING

E D K Protection bag (H25-0029-04) Foot (J02-0475-05) x 2 Foot (J02-0492-04) x 2 Grommet (J59-0302-05) x 2 Binding head machine screw (N30-4006-46) x 2 Binding head machine screw (N35-3006-45) x 5 F 49 Cushion (G13-1801-04) 50 Cushion (G13-1802-04) 54 Protetion bag (H25-0747-04) 61 Hardware fixture (J21-8402-04) 707 Pamphlet : E 708 Warranty card : K,KInstruction manual (B62-1327-10) 64 Handle (K01-0418-15) 17 DC cord (E30-3427-15) 55 Protection bag (H25-0762-04) 8 Front glass (B10-2635-04) 10 Filter (B11-1259-04) 56 Protection bag (H25-2328-04)
18 Lead wire with connector (E31-3228-05) 36 Fuse (Blade, 15A/32V) (F05-1537-05) 53 Protection bag (H25-0029-04)

709 Carton board

710 Packing fixture

712 Protection bag

BA CK UP
713 Packing fixture 711 Packing fixture
57 Item carton case (H52-1621-02)

ADJUSTMENT

Test Equipment Required for Alignment
Test Equipment 1. Standard Signal Generator (SSG) 2. Power Meter Frequency Range Modulation Output Input Impedance Operation Frequency Measurement Capability Frequency Range Measuring Range Accuracy Frequency Range Frequency Stability Frequency Range Voltage Range Frequency Range Output Capability Input Level Measuring Range Input Impedance Major Specifications 136 to 174MHz Frequency modulation and external modulation 0.1V to greater than 1mV to 174MHz or more Vicinity of 50W 136 to 174MHz 1 to 20V DC High input impedance for minimum circuit loading DC through 30MHz 10Hz to 600MHz 0.2ppm or less 13A or more 50Hz to 10kHz 3mV to 3V 50Hz to 5kHz 0 to 1V 3% or less at 1kHz 50mV to 10Vrms 10 to 1.5V DC or less 50k/V or greater Approx. 4, 5W

MOD ANA Rear or Deviation meter Oscilloscope AG AF VTVM Front

23. DQT balance (Wide)

1) Low CH (VCO-A center) High CH (VCO-B center) Deviation meter filter HPF : OFF LPF : 3kHz De-emphasis : OFF Transmission 2) Low CH (VCO-A center) High CH (VCO-B center) Transmission 1) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Deviation meter filter HPF : OFF LPF : 3kHz De-emphasis : OFF Detector : p-p/2 Transmission 2) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Transmission 1) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Deviation meter filter HPF : OFF LPF : 3kHz De-emphasis : OFF Detector : Peak hold Transmission 2) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Transmission 1) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Deviation meter filter HPF : OFF LPF : 15kHz De-emphasis : OFF Transmission 2) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Transmission
MOD ANA Rear or Deviation meter Oscilloscope
PC adj. Make the demodulated waves into square waves.
Oscilloscope DC range flat A part A

24. QT deviation (Wide)

TX ANT

PC adj. 0.75kHz

0.05kHz

PC adj. 0.35kHz

25. DQT deviation (Wide)
26. CW ID deviation (Wide)

PC adj. 2kHz

PC adj. 1kHz
Measurement Item 27. Test tone deviation (Wide) Condition 1) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Deviation meter filter HPF : OFF LPF : 15kHz De-emphasis : OFF Transmission 2) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Transmission 1) Insert AG output into the control I/O TA terminal (pin 9). VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Deviation meter filter HPF : OFF LPF : 15kHz De-emphasis : OFF AG freq : 1kHz (Sine wave) AG level : 280mV Transmission 2) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Transmission 1) Insert AG output into the control I/O TD terminal (pin 8). VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Deviation meter filter HPF : OFF LPF : 3kHz De-emphasis : OFF AG freq : 100Hz (Sine wave) AG level : 0.5Vp-p (177mVrms) Transmission 2) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Transmission 1) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) SSG output : 53dBm SSG MOD : 1kHz SSG DEV : 1kHz Deviation meter filter HPF : OFF LPF : 15kHz De-emphasis : OFF Transmission 1) VCO-A CH (TX VCO A center) VCO-B CH (TX VCO B center) Transmission SSG MOD ANA or Deviation meter Oscilloscope Rear RX ANT TX ANT MOD ANA Rear or Deviation meter Oscilloscope AG AF VTVM TX ANT MOD ANA Rear or Deviation meter Oscilloscope AG AF VTVM TX ANT Testequipment Unit Terminal TX ANT Unit Adjustment Parts Method PC adj. 3kHz Specifications/Remarks 0.1kHz
MIC PC adj. 1.5kHz 0.05kHz

TX-RX Unit (X57-6260-XX) (B/2) : Control Section
Connector Terminal Terminal I/O No. CN600 To X54 (B/2) display unit 13 GND NC DAT PSW STB1 CLK SOE TXD1 K1 RXD1 K2 K3 K4 K5 VLI 5C MIG MIC TXI TXO RXI AC BC1 BC2 BC3 BC4 PTI CLRC RXO PTO 5C GND 8C 8C NC SB SB SB SB NC NC GND GND MO MB O I O O O I I I I O O I O I I O I O O O O O I O O O O I I I I I I O O No. Name SB SB O O Power supply output after power switch Power supply output after power switch Ground No Connection Serial data output Power switch input Strobe data for shift register Clock data output Output enable for shift register KEY input 1 Hook detection input/RXD input KEY input 2 KEY input 3 KEY output 4 KEY output 5 Volume control input for AF signal. Common 5V output Mic ground MIC signal input MIC signal input MIC signal output RX audio signal input Audio control signal output Scramble code output. Scramble code output. Scramble code output. Scramble code output. PTT signal input Clear code for scramble RX audio signal output PTT signal output Common 5V output Ground Common 8V input Common 8V input No connection Power supply input after power switch Power supply input after power switch Power supply input after power switch Power supply input after power switch No connection No connection Ground Ground Modulation signal output for VCO Modulation signal output for VCXO Terminal function
Connector Terminal Terminal I/O No. No. 36 CN603 To ACC 15 pin connector CN604 To ACC 15 pin connector CN605 CN606 To ACC 25 pin D-sub connector GND GND AO5 AO4 AO3 SPO SPO AO2 AO1 SPI RSSI RD SPG SPG SP SPG NC NC SPM IO6 RXG IO5 RA IO4 O O O O O O O I O O O I O Name GND SOE TEMP PSW BUP LD2 FWD STB4 CK DT LDT LDR EPT EPR CP DP NC RSSI ASQ GND NC DET NC SB SB O I O I O I O O O I I O O O O I I I O O Ground Output enable for shift register High temperature detector signal input Power switch output Backup signal input Latch data output for DA converter RF power down signal input Strobe output for shift register Clock output Data output Lock detector for TX PLL Lock detector for RX PLL Enable output for TX PLL Enable output for RX PLL Clock output for PLL Data output for PLL No connection RSSI signal input Squelch signal input Ground No connection Detection signal input No connection Power supply output after power switch Power supply output after power switch Ground Ground Auxiliary output 5 (FPU selectable) Auxiliary output 4 (FPU selectable) Auxiliary output 3 (FPU selectable) External speaker output External speaker output Auxiliary output 2 (FPU selectable) Auxiliary output 1 (FPU selectable) Internal speaker input RSSI signal output RX data output External speaker ground External speaker ground Internal speaker AF output Internal speaker ground No connection No connection Speaker mute signal input RX signal ground RX audio output (voice) CN351 CN350 Terminal function Connector Terminal Terminal I/O No. No. Name RD IO3 TA IO2 TD IO1 DG TXG AI3 NC AI2 SC AI1 EPTT TXD2 EMON RXD2 NC NC NC NC NC O I I I I O I I O I I RX data output (voice & data) TX audio input (voice) TX data input (data or signaling) Control line ground TX signal ground Auxiliary input 3 (FPU selectable) No connection Auxiliary input 2 (FPU selectable) Squelch control output Auxiliary input 1 (FPU selectable) External press-to-talk switch input RS-232C output signal (for FPU) External monitor switch input RS-232C input signal (for FPU) No connection No connection No connection No connection No connection I/O Programable I/O 3 I/O Programable I/O 2 I/O Programable I/O 1 Terminal function

SPECIFICATIONS (E TYPE)

Frequency Range.. Number of Channels.. Channel Spacing... Operating Voltage.. Current Drain Standby... Standby w/power save.. Receive... Transmit/Receive. Duty Cycle.. Frequency Stability.. Antenna Impedance.. Operating Temperature Range. Dimensions.. Weight... 146 to 174MHz 16 channel Wide : 25kHz 13.2V DC
Narrow : 12.5kHz (PLL channel stepping 5kHz/6.25kHz)
0.8A 0.3A (Operationg mode DC-IN : Backup, FAN : Temp, SAVE : ON, DISP : OFF) 1.2A Less than 13A Receive : 100% Transmit : 100% (100% @25W) Less than 0.0002% 30C to +60C 50 30C to +60C 483 W x 88 H x 340 D mm 9.7kg
RECEIVER (Measured by ETS 300 086)
Sensitivity... Adjucent Channel Selectivity. Intermodulation.. Spurious & Image Rejection.. Audio Output (Ext. Speaker).. Audio Distortion (Ext. Speaker). Band Spread.. 0.45V 85dB ( 25kHz) 77dB ( 12.5kHz) 72dB 90dB 4W at 4 less than 5% distortion Less than 2.5% at 1000Hz 3MHz
TRANSMITTER (Measured by ETS 300 086)
RF Power Output.. Modulation Limiting. Spurious Emission.. FM Noise (EIA).. Modulation Distortion.. Microphone Impedance.. Band Spread.. 50W adjustable to 25W (100% duty @25W) 5kHz at 25kHz 2.5kHz at 12.5kHz 36dBm 1GHz 30dBm > 1GHz 25kHz : 50dB 12.5kHz : 45dB Less than 3% at 1000Hz 600 28MHz

KENWOOD CORPORATION

14-6, Dogenzaka 1-chome, Shibuya-ku, Tokyo 150-8501, Japan
KENWOOD SERVICE CORPORATION
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745, U.S.A.
KENWOOD ELECTRONICS CANADA INC.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBH
Rembrcker Str. 15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS BELGIUM N.V.
Mechelsesteenweg 418 B-1930 Zaventem, Belgium
KENWOOD ELECTRONICS FRANCE S.A.
13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITED
KENWOOD House, Dwight Road, Watford, Herts., WD1 8EB United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands

24035 NE Butteville Rd Aurora, OR 97002 (503) 678-6182 http://www.arcomcontrollers.com arcom@arcomcontrollers.com
Interfacing the RC210 to Kenwood TKR-750/850 Repeaters

Cabling

RC210 DB-9 Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 TKR DB-25 Pin 23 Pin 24 Pin 16 Pin 9 Pin 11 Pin 7 Pin 25 Pin 19 Pin 12 SIGNAL QT/DQT (CTCSS/DCS) Encode Control Receiver TOR (CTCSS/DCS) PTT Transmitter Audio (TA) Receiver Audio (RA) Ground Receiver COR (COS) Ground Ground NOTES Active Low Active High Active Low Preemphasized Deemphasized Ground Active High TXG Ground RXG Ground

TKR Programming

Program the TKR using the Kenwood software. PARAMETER Frequency QT/DQT Decode QT/DQT Encode Wide/Narrow Multi Table Ope Mode Scan Del/Add CW ID Aux In/Out 4 * Aux In/Out 5 Aux In/Out 6 CONFIGURED AS As required As required As required As required No Duplex No No QT/DQT Enc Enable TOR set for Active High COR set for Active High
*NOTE: If not using a Version 2 TKR, then control of QT/DQT Encode is not possible.