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18

TK-190

CIRCUIT DESCRIPTION

9. Compander circuit

The term compander is a compound of compressor and

expander.  The compander reduces noise by utilizing a com-
pressor and an expander.

As shown in Fig. 14, the signal input to the compressor is

compressed so that the logarithmic ratio is 1/2 with refer-
ence to –10dBV, and then output onto the transmission
path.  The signal is expanded by the expander so that the

logarithmic ratio is 2 with reference to –10dBV.  This re-
duces noise on the transmission path and prevents deterio-
ration of the signal quality due to noise during transmission.

The TK-190 contains IC607 (TC35453F) to perform this

operation.

Pin 16 : Compressor input pin
Pin 18 : Compressor output pin
Pin 43 : Expander input pin
Pin 41 : Expander output pin

Fig. 14

Compressor

Transmission path

Expander

Noise

40dB S/N

0

–20

–40

–60

–80

–100

(dB)

0

–20

–40

–60

–80

–100

60dB S/N

Output

Input

Modulator

and

Transmitter

Compressor

Input

Demodulator

and

Receiver

Expander

Output

Signal

Fig. 15

1

11

33

23

12

22

44

34

IC607

C638

C640

R651

C635

C637

R649

C627

R665

9

TP10

C642

C641

C636

R656

R655

R658

R631

C643

C656

C666

C663

D601

R664

R404

R408

R662

C664

C604

R603

C651

R675

R663

C653

652

4

50

C649

C650

L604

L406

R654

R660

R414

R412

R415

R653

R652

C654

C667

C657

R661

C644

C646

Q404

Q602

Q403

Q601

C647

L603

C634

R640

R666

C400

R645

L602

L601

C632

C633

X57-608X-XX
Component side

DATI

TCNT

AUDIH

DATO

CODE4

CODE3

CODE1

9

16

8

1

RXOUT

E

CLR/C

RXIN

+V

CODE2

TXOUT

NC

PTTIO

RXAEN

TXIN

STONE

E

SCALL

KEY

EMERG

PTT

MUTE

AUX

MAND

BUSY

A+

C471

C469

C470

C474 R481

R674

IC1

C30

C454

C463

C459

C460

R471

R470

C472

C466

C464

C462

C461

C468

C456

C458

C467

10. Option Board Terminal

Terminals for mounting the option board are provided at

the bottom of the TX-RX unit.  The table below shows the
correspondence between the board and terminals.  Discon-

nect R414 and R665 in TX-RX unit when the voice scrambler
board is attached.

Connect the option board to the connection terminals of

the TX-RX unit.

Summary of Contents for TK-190

Page 1: ...ivity 70dB Intermodulation 65dB Spurious response 70dB Audio Power Output 500mW Frequency Stability 5ppm Channel Frequency Spread 7 3MHz K 15MHz K2 TRANSMITTER Measurements made per EIA TIA 603 RF Power Output 6W 1W Spurious Harmonics 55dB 60dB Modulation 16KøF3E Wide FM Noise 45dB Audio Distortion Less than 3 Frequency Stability 5ppm Channel Frequency Spread 7 3MHz K 15MHz K2 Photo is TK 190 K ty...

Page 2: ...y 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 techni cian only SERVICE This radio is designed for easy servicing Refer to the schematic diagrams printed circuit board views and align ment procedures contained within Caution Do not bring the antenna clo...

Page 3: ...hts orange while receiving a 2 Tone DTMF call Flashes red when the battery power is low while transmitting replace or recharge the battery Note This LED can be disabled by your dealer Power switch Volume control Turn clockwise to switch the transceiver ON Turn counterclockwise until a click sounds to switch the transceiver OFF Rotate to adjust the volume level Clockwise increases the volume and co...

Page 4: ...ntil there is no signal on the priority channel 2 6 Revert Channel The revert channel is used to transmit during scanning and set by the programming software KPG 59D 1 Last called channel The transceiver reverts to the last called channel during the scan 2 Last used channel The transceiver reverts to the last used transmitted channel during scan Last used revert channel includes talkback function ...

Page 5: ...assword in FPU reading process 3 Optional Features You can use these features using the programming soft ware KPG 59D 3 1 Beep Tones The beep tones power on tone control tone warning tone alert tone are individually programmable to the fixed level 0 to 31 or follow the mechanical volume position 3 2 Minimum Volume The minimum volume is programmable 0 to 31 The transceiver remains the minimum volum...

Page 6: ...s decoded 3 22 Noise Canceling Microphone Reduce the background noise 4 Channel Features You can use these features using the programming soft ware KPG 59D 4 1 Alphanumeric Display Channel Name The programming software KPG 59D enables you to set the alphanumeric display for channel name The total text size of channel name are 7 digits For example If you set 2 digits for group name then you can use...

Page 7: ... r o t i n o M y r a t n e m o M r o t i n o M n o i t c n u F o N e n o T e l b a t c e l e S r o t a r e p O n a c S r e l b m a r c S 3 t f i h S n o i t a u n e t t A P S l e v e L h c l e u q S y r a t n e m o M h c l e u q S F F O h c l e u q S d n u o r A k l a T 1 This function can be selected only when the scrambler board has not been installed 2 This function can be selected only when th...

Page 8: ...ach channel 16 kinds of tone pair for OST can be programmed by KPG 59D OST is useful to access the repeater with same radio frequency and different tone QT DQT OPERATING FEATURES You can use these features using the programming soft ware KPG 59D Selector function is selectable channel se lect or group select The functions for Toggle switch are listed page 7 Fig 2 Right position is active for progr...

Page 9: ...s on Emergency Channel Display setting 5 22 SP MIC Attenuation Press this key once the volume level of speaker micro phone is attenuated Press this key again the volume level of speaker microphone returns to the previous level 6 2 Tone Built in 2 Tone decoder decoder program 1 decoder pro gram 2 decoder program 3 is available for option signalling It is possible to use individual call or group cal...

Page 10: ...occurs during cloning an ERROR mes sage appears on the master side transceiver 8 Pressing the PTT key sets clone mode again PTT PTT PTT CLONE START END Red lamp flashes Cloning interface cable Part No E30 3325 05 REALIGNMENT PC mode PC programming mode PC test mode PC tuning mode Clone mode Panel test mode LCD all lamp mode Panel tuning mode Memory Clear function Main programming mode User mode Mo...

Page 11: ...r A window opens on the display to indicate progress of writing When the transceiver starts to receive data PG is appeared on 2 digit sub display 10 If writing ends successfully the red LED on the trans ceiver lights and the checksum is displayed 11 If you want to continue programming other transceivers repeat steps 5 to 8 Notes To start the Firmware Programmer from KPG 59D the Fpro path must be s...

Page 12: ...kHz Incoming a signals from the antenna are mixed with the local signal from the PLL1 to produce the first IF of 128 55MHz This is then mixed with the 129 005MHz seconds local oscillator output to produce the 455kHz second IF This is detected to give the demodulated signal T h e t r a n s m i t s i g n a l i s m o d u l a t e d P L L 2 VCO2 129 005MHz from the microphone The transmit sig nal frequ...

Page 13: ...tputs data to IC403 based on this input When there is no SP MIC installed this logic level is high When the INT AFC is high the EXT AFC goes low so the AF signal is only input to the amplifier for the internal speaker INT SP of IC1 However when a SP MIC has been in stalled this logic level is low so the INT AFC goes low and the EXT AFC goes high So that the AF signal is input only to amplifier for...

Page 14: ...n and Sub inputs at the same signal and is therefore canceled out When a signal is only input to Main and there is no signal at Sub the Main signal is output as is from IC3 pin 7 In other words only the voice audio of the operator in ex tremely close proximity to the Main MIC is input to Main so that the signal is output as is from IC3 pin 7 Also when the N C switch is set to L transistor Q14 turn...

Page 15: ...e output of IC2 2 2 controls the VGC of the RF power amplifier to make the both voltages to same voltage The change of power high low is carried out by the change of the reference voltage Q4 Q5 and Q8 are turned on in transmit and the APC circuit is active See Figure 6 5 PLL Frequency Synthesizer The frequency synthesizer consists of the VCXO X1 VCO L800 PLL IC IC101 and buffer amplifiers The VCXO...

Page 16: ...ogram for the CPU and data such as transceiver channels and operating features This program can be easily written from an external de vices Data such as DTMF memories and operating status are programmed into the EEPROM IC412 7 2 CPU clock The CPU clock is generated by VCXO 16 8MHz and it is fed through an inverter IC416 This clock was divided into a half cycle 1 2 frequency at the internal CPU The...

Page 17: ...ustment and then applied to the audio processor IC607 The signal is mixed with the audio signal and goes to the VCO The RX DTMF tone is passed the D A convertor IC603 for audio control summing amplifier IC604 2 2 au dio power amplifier and then to the speaker IC406 CPU LPF LPF IC603 DAC ADJ SUM SUM SUM MOD HSD OUT LSD OUT RX AUDIO TX AUDIO VCO2 to AF AMP Fig 12 Encode IC601 2 2 AMP from IC300 FM I...

Page 18: ...ator and Transmitter Compressor Input Demodulator and Receiver Expander Output Signal Fig 15 1 11 33 23 12 22 44 34 IC607 C638 C640 R651 C635 C637 R649 C627 R665 9 TP10 C642 C641 C636 R656 R655 R658 R631 C643 C656 C666 C663 D601 R664 R404 R408 R662 C664 C604 R603 C651 R675 R663 C653 652 450 C649 C650 L604 L406 R654 R660 R414 R412 R415 R653 R652 C654 C667 C657 R661 C644 C646 Q404 Q602 Q403 Q601 C64...

Page 19: ...request H No emergency operatiion request BUSY Channel Busy Microcomputer Busy logic ANI board Microcomputer output L Busy H Not busy KEY Transmission Transmission start control GE Star Control unit Microcomputer input L Transmission request Key X53 counter TX RX unit X57 microcomputer H No transmission request A Board power Switched B Power supply supply 10 2 Option port 2 For voice scrambler etc...

Page 20: ...DT RX DATA 1 P120 RTP0 O MODEM FCLR 2 P121 RTP1 O SB Control 3 P122 RTP2 O D A CONVERTER CS 4 P123 RTP3 O MODEM MSKE MSK ENABLE 5 P124 RTP4 O MODEM DIN DATA TX_DATA 6 P125 RTP5 I Model select 1 7 P126 RTP6 I Model select 2 8 P127 RTP7 O Clock Shift 9 VDD 5V 10 X2 X TAL 12 0MHz 11 X1 12 VSS GND 13 XT2 OPEN 14 XT1 GND 15 RESET CPU RESET 16 P00 INTP0 I UCOM Stop 17 P01 INTP1 I Modem TRD TX CLOCK 18 P...

Page 21: ...e point level 10 NC Not connected 11 14 AO3 AO6 O 8 bit resolution D A 15 VDD Terminal for determining the D A conversion reference up side point level 16 Vcc Power supply 3 LCD Driver LC75824W Control unit IC101 3 1 Block diagram Common driver Segment Driver Latch Shift Register Clock Generator Address Detector DI CL CE VDD1 VDD2 INH OSC VDD VSS COM4 COM3 COM2 COM1 S51 S50 S13 S12 P12 S2 P2 S1 P1...

Page 22: ... CV2 10uH C2 27p 39p L3 L34 4619 05 L34 4620 05 Q4 2SC4649 N P Q2 2SC4649 N P FO2 Vcc2 Vcc1 FO1 C23 8p 27p C20 1000p R10 100k L9 150nH R11 100 C22 1000p C17 R6 10k TC2 D2 HVC350B C14 3p C13 1p C25 22p 22p C26 C27 C11 1000p 27p L8 10uH R8 220 R3 33 R5 100 L5 120nH C9 1000p R4 82k C8 1000p C5 18p C6 R1 10k L2 10uH C1 1000p C3 27P TC1 10p 18p L4 10uH R2 220 C21 1000p 1 Final Unit X45 3610 10 Ref No U...

Page 23: ...ansmitted Q5 APC reference voltage SW Operate when transmitted Q7 ANT_SWcircuit control SW Operate when transmitted Q8 Transmission power control Operate when transmitted voltage SW Q32 RF pre drive amplifier Operate when transmitted Q101 Ripple filter Q102 Transmission mixer Operate when transmitted Q103 RF amplifier Q104 RF amplifier Q105 RF amplifier Q106 RF amplifier Q200 RF amplifier Operate ...

Page 24: ...B B38 0786 05 LCD 9 1A B42 3394 14 STANDARD LABEL 11 1A B43 1111 14 BADGE KENWOOD 12 1D B46 0470 00 WARRANTY CARD 13 1D B62 1175 00 INSTRUCTION MANUAL 15 1D D32 0421 24 STOPPER ACSY 16 2A E23 1102 14 TERMINAL 17 2B E23 1162 04 TERMINAL X53 D 6 18 3A E23 1163 04 RELAY TERMINAL 20 1B E29 1165 05 INTER CONNECTOR LCD 21 2A E37 0682 05 FLAT CABLE TX RX CONT 22 1B E37 0684 05 LEAD WIRE WITH CONNECTOR SP...

Page 25: ...esti parts nation CONTROL UNIT X53 3930 10 TX RX UNIT X57 608X XX 0 10 K 0 11 K2 C3 5 CK73GB1H103K CHIP C 0 010UF K C6 CC73GCH1H470J CHIP C 47PF J K2 C6 CC73GCH1H560J CHIP C 56PF J K C7 8 CK73GB1H103K CHIP C 0 010UF K C9 CK73GB1H102K CHIP C 1000PF K C10 CC73GCH1H120J CHIP C 12PF J C11 CK73GB1H103K CHIP C 0 010UF K C12 CC73GCH1H560J CHIP C 56PF J C13 CC73GCH1H101J CHIP C 100PF J C14 CC73GCH1H470J C...

Page 26: ...IP C 0 010UF K C204 CK73GB1H103K CHIP C 0 010UF K C206 CK73GB1H102K CHIP C 1000PF K C207 CK73GB1H103K CHIP C 0 010UF K C209 210 CK73GB1H103K CHIP C 0 010UF K C212 213 CK73GB1H103K CHIP C 0 010UF K C214 CC73GCH1H040C CHIP C 4 0PF C C217 CK73GB1H103K CHIP C 0 010UF K C220 CK73GB1H103K CHIP C 0 010UF K C223 CC73GCH1H470J CHIP C 47PF J C224 CK73GB1H102K CHIP C 1000PF K C225 CC73GCH1H470J CHIP C 47PF J...

Page 27: ...K CHIP C 4700PF K C656 CK73FB1H563K CHIP C 0 056UF K C657 C92 0714 05 CHIP TAN 4 7UF 6 3WV C659 CK73GB1C104K CHIP C 0 10UF K C660 C92 0560 05 CHIP TAN 10UF 6 3WV C661 CK73GB1C104K CHIP C 0 10UF K C663 CK73GB1H102K CHIP C 1000PF K C664 CK73GB1C104K CHIP C 0 10UF K C665 CK73GB1C333K CHIP C 0 033UF K C666 CK73GB1E153K CHIP C 0 015UF K C667 CK73GB1H103K CHIP C 0 010UF K C668 CK73GB1H102K CHIP C 1000PF...

Page 28: ... CHIP R 150 J 1 16W R43 RK73GB1J331J CHIP R 330 J 1 16W R44 R92 1252 05 CHIP R 0 OHM R101 102 RK73GB1J473J CHIP R 47K J 1 16W R103 RK73GB1J560J CHIP R 56 J 1 16W R104 R92 1252 05 CHIP R 0 OHM R106 RK73GB1J560J CHIP R 56 J 1 16W R107 108 RK73GB1J100J CHIP R 10 J 1 16W R109 R92 1252 05 CHIP R 0 OHM R110 RK73GB1J152J CHIP R 1 5K J 1 16W R111 112 RK73GB1J100J CHIP R 10 J 1 16W R113 RK73HB1J333J CHIP R...

Page 29: ...5K J 1 16W R443 RK73GB1J821J CHIP R 820 J 1 16W R444 445 R92 1252 05 CHIP R 0 OHM R446 RK73GB1J472J CHIP R 4 7K J 1 16W R447 RK73GB1J473J CHIP R 47K J 1 16W R448 449 RK73GB1J102J CHIP R 1 0K J 1 16W R450 RK73GB1J473J CHIP R 47K J 1 16W R451 RK73GB1J103J CHIP R 10K J 1 16W R452 455 RK73GB1J104J CHIP R 100K J 1 16W R456 458 RK73GB1J473J CHIP R 47K J 1 16W R459 462 R92 1252 05 CHIP R 0 OHM R463 464 R...

Page 30: ...R IC301 TC7S66FU IC ANALOG SWITCH IC400 BU4094BCFV IC 8bit SHIFT STORE REGISTER IC401 402 TK11250BM IC VOLTAGE REGULATOR IC403 405 BU4094BCFV IC 8bit SHIFT STORE REGISTER IC406 784214GC0618EU MPU IC409 PST9132NR IC IC412 AT2408N10SI2 5 IC 8kbit SERIAL EEPROM IC413 TC75W51FU IC OP AMP X2 IC414 AT29C020 90TI IC IC415 TC7S02F IC NOR GATE IC416 TC7WU04FU IC INVERTOR IC417 TC7S04FU IC INVERTER IC600 LC...

Page 31: ...30 2608 45 E M2 x 3 N78 2030 46 F M2 x 3 N79 2035 46 G M2 x 4 N83 2004 46 H M2 x 5 N83 2005 45 61 Ex2 50 44 57 1 X53 B 6 11 35 69 22 9 29 29 43 58 X53 A 6 47 32 703 36 70 16 Gx2 G G G 28 Gx2 21 Hx3 704 27 18 37 33 F 2 Cx2 18 F 38 701 700 53 25 X45 G G 24 17 34 52 66 67 X53 D 6 3 Gx2 G B B 4 A Bx2 59 60 55 48 E 23 54 68 20 G 45 8 7 Hx2 X57 33 ...

Page 32: ...2 Warranty card B46 0470 00 15 Stopper D32 0421 24 5 Dressing plate B03 0594 04 6 Cap Universal B09 0363 03 65 Screw set N99 2004 05 40 Protection bag H25 0029 04 49 Belt hook J29 0652 25 39 Packing fixture H12 3018 02 42 Item carton case H52 1480 02 UPC code label ...

Page 33: ...6 on the RF power mod ule and 3 on the antenna daughter board must be disconnected Remove the Universal Connector 1 The universal connector is fastened to the chassis with double side tape 2 Press firmly with a tool such as a screwdriver and so that it can peel Note You must replace both parts together when re placing the universal connector or the FPC Remove the Side Key Assy 1 The side key assy ...

Page 34: ...cy 50kHz to 600MHz Frequency Deviation 35MHz Output Voltage 100mV or more The following parts are required for adjustment 1 Antenna connector adapter The antenna connector of this radio uses an SMA termi nal Use an antenna connector adapter SMA f BNC f or SMA f N f for adjustment The adapter is not provided as an option so buy a commercially available one Note When the antenna connector adapter to...

Page 35: ... sides of the connector lever when put in the flat cable Tweezers Lever Flat cable Jig TX RX unit Battery terminal Flat cable Lever Regular screwdriver Panel tuning PC tuning Connect the wires to the PCB in the connector case of interface cable For output the wires out of the connector case need to process the connector case ADJUSTMENT 11 GREEN 5M TUBE SCREW 8 YELLOW PF SW 2 RED RX AF OUTPUT 3 BLA...

Page 36: ...ide 2 SQ T220 Orange Orange Orange Squelch tight Low SQ T200 L Squelch tight Cen SQ T220 C Squelch tight Hi SQ T230 H Side 2 Squelch open Side 2 Side 2 SQ O170 Orange Orange Orange Squelch open Low SQ O150 L Squelch open Cen SQ O170 C Squelch open Hi SQ O180 H Side 2 Side 2 Orange Sensitivity Low SNS 17 L MON Sensitivity adj Low edge Sensitivity Cen SNS 75 C MON Sensitivity adj Center Sensitivity ...

Page 37: ...0MHz K 50Hz adjustment CH No 3 f counter TOP2 42 5000MHz K2 Signalling No 1 Select FRQ in panel tuning mode PTT ON 2 Maximum 1 Set panel test mode Power meter Panel ANT Check 6 3W or more power CH No 3 check Signalling No 1 Ammeter BATT terminal voltage 7 5V Select POW 255 in panel tuning mode PTT ON 3 TX high 1 Set panel test mode Panel TOP1 5 8W 0 5W power CH No 3 TOP2 2 3A or less adjustment Si...

Page 38: ... check Signalling No 1 Set low power Push Side2 PTT ON 2 CH No 2 Signalling No 1 Set low power Push Side2 PTT ON 3 CH No 3 Signalling No 1 Set low power Push Side2 PTT ON 7 DQT balance 1 Set panel test mode Power meter Panel ANT Panel TOP1 Make the demodu adjustment CH No 3 Deviation TOP2 lation waves into Signalling No 1 meter square waves Select BLNC Oscilloscope in panel tuning mode Deviation m...

Page 39: ...l tuning mode Panel TOP1 0 75kHz 0 05kHz deviation CH No 3 TOP2 adjustment Signalling No 1 MIC input OFF Select QTDV in panel tuning mode Deviation meter filter setting LPF 3kHz HPF 50Hz De emphasis 750µs PTT ON 11 DQT 1 Set panel test mode 0 75kHz 0 05kHz deviation CH No 3 adjustment Signalling No 1 Select DQDV in panel tuning mode Deviation meter filter setting LPF 3kHz HPF OFF PTT ON 12 DTMF 1 ...

Page 40: ...1 Set panel test mode SSG Panel ANT Check 0 55V 0 3V VOL 2 check CH No 3 5 or less Signalling No 1 AF VTVM SSG freq Each freq Oscilloscope output 53dBm 501µV Distortion MOD 1kHz meter DEV 2 4kHz Audio analyzer 2 Hum and 1 Set panel test mode 42dB or more noise ratio CH No 3 check Signalling No 1 SSG output 53dBm 501µV 3 BPF coil 1 Set panel test mode Tracking Panel ANT TX RX L201 Adjust the BPF co...

Page 41: ...test mode Adjust to point of squelch CH No 3 opening squelch adjustment Signalling No 1 Select SQ T in panel tuning mode SSG output 6dB above to 12dB SINAD level ADJUSTMENT Fig 1 K2 ATT10dB A_write B_blank MKR 15 00 kHz 0 749 dB TG LEVEL REF 64 0 dBm 2dB RBW 1 kHz VBW 1 kHz SWP 500 ms SPAN 50 0 kHz CENTER 128 55000 MHz 25 dBm Fig 2 Measurement Test equipment Unit Terminal Adjustment Unit Parts Met...

Page 42: ...F G H I J K L M N O P Q R S 2 3 4 5 7 6 8 9 10 11 12 13 14 43 44 FINAL UNIT X45 3610 10 Component Side View Ref No Address Q1 3D Q2 2D FINAL UNIT Component side CONTROL UNIT X53 3930 10 B 6 D 6 E 6 F 6 Component Side View Ref No Address D102 3M D103 3Q D104 4Q CONTROL UNIT B 6 Component side CONTROL UNIT X53 3930 10 A 6 Component Side View 2SK3075 Component side Pattern 1 Pattern 2 Foil side Compo...

Page 43: ...R48 R59 R47 R46 R45 L4 R18 Q15 Q7 C13 C14 R5 C43 R14 R12 R17 R8 R7 R6 IC6 1 3 5 4 1 3 5 4 1 3 5 4 C22 IC2 1 8 16 9 D16 IC5 IC4 C27 R1 R2 CN1 1 33 CP1 R62 R26 C29 R28 C28 R27 L9 R13 R4 X53 3930 10 A 6 J72 0705 02 1 S R Q P O N M L K J I H G F E D C B A 2 3 4 5 7 6 8 9 10 11 12 13 14 45 46 CONTROL UNIT X53 3930 10 B 6 D 6 E 6 F 6 Foil Side View Ref No Address IC101 3F D101 2E CONTROL UNIT B 6 Foil s...

Page 44: ...6 R657 C645 C639 X600 R601 IC405 IC601 C681 IC400 C611 R471 R470 C472 R677 C417 Q400 C660 C425 C428 CN405 C466 C465 C464 C462 C461 C468 C456 C610 CN401 IC600 R458 Q411 C476 C475 R448 C16 C39 C38 C34 C234 C47 C48 R35 R38 R28 R29 R26 C11 C35 C36 R451 Q4 IC2 R19 R21 R443 R18 R478 R473 R17 R672 R671 R670 R611 R614 R602 C603 C606 C413 R472 C414 C416 C415 C421 R401 C431 Q401 R609 C665 R605 R669 L401 C42...

Page 45: ... C143 C174 R154 L122 C171 R144 R145 R155 Q106 L206 L208 C237 R208 R210 R223 R209 C213 R206 C238 R201 R225 R203 C233 C220 R219 C223 C225 D3 Q200 1 2 4 3 C28 C27 C22 C21 C20 C29 C26 XF300 R313 C327 Q302 R335 R325 R324 R334 L306 C306 C305 C312 C311 R315 IC300 1 8 16 9 C433 C441 R410 C442 R416 D405 C117 C121 C111 R150 R151 R109 R146 R112 R411 CP414 CP415 CP416 CP417 CP418 CP401 CP402 L403 C426 C422 R4...

Page 46: ...9 9 16 8 1 RXOUT E CLR C RXIN V CODE2 TXOUT NC PTTIO RXAEN TXIN STONE E SCALL KEY EMERG PTT MUTE AUX MAND BUSY A SENS B TP4 X57 608X XX J72 0704 12 E 1 1 2 5 3 4 3 6 4 TP6 C471 C469 C470 C474 R481 R674 IC1 C30 IC402 CN404 R400 R402 R463 F400 FUSE C454 C463 R13 L400 Q402 Q405 Q406 Q407 D400 IC603 C613 R617 R668 R612 C609 IC602 C459 C460 IC404 IC403 C612 R606 R607 C601 C600 R608 C607 IC607 C621 C626...

Page 47: ...SCHEMATIC DIAGRAM TK 190 A B 1 3 2 4 5 6 7 C D E F G H I J K L M N O P Q R S T ...

Page 48: ...PF RF Amp Q102 3SK131 BPF IC200 GN2011 MCF Mixer IF Amp Q302 2SK1215 Mixer LPF APC Lo SW DAN235E 2SC4649 Buff Amp 2SC4649 Buff Amp CD300 CF300 301 FM System IC IC300 TA31136FN 2SC4649 Buff Amp 2SC4649 Buff Amp VCO1 2 L800 L78 0481 05 Dual PLL IC101 LM2332L SW TC7S66FU AF Amp Mute SW 2SK1824 Fuse LPF DTMF Decoder LC73872M SUM Amp TC75W51FU Audio Processor TC35453F LPF LPF LPF LSD SUM Amp D A conver...

Page 49: ...mVrms MIC MAIN IC3 NC AMP IC607 IC605 1 2 VCO L800 PLL PLL 8 5 9 5dBm 1 2dBm 7 7dBm Q105 Q32 Q102 Q106 D102 Q1 RX Lo 18 0dBm 6 2dBm 9 5dBm 23 5dBm 20 5dBm C6 ANT 6 0W Power amp RF RF1 RF2 RF AF AF AF IF 128 55MHz IF2 455kHz Q2 To make measurements in the AF section con nect the AC level meter ANT input 53dBm 1kHz FM 3kHz DEV In the RF section use a 10000pF coupling ca pacitor The display shows the...

Page 50: ...MIC signal 23 AF O Audio signal 24 AFE Audio GND 25 AFE Audio GND CN No Pin No Name I O Function 26 SP I BTL input for external speaker 27 SP I BTL input for external speaker 28 MUTE Audio mute switch 29 SD TO O Optional board enable 30 MAN D O Optional board enable 31 LAMP O Backlight LED control Normally 0V Lighting 7 5V 32 Q7 O Key scan signal Q7 33 Q6 O Key scan signal Q8 CN403 1 NC Not connec...

Page 51: ...1 AMPSW I Audio amplifier switch 32 OPPTT I Optional board enable 33 TCONT I Optional board enable CN3 1 Q8 O Key scan signal Q8 to 2 Q7 O Key scan signal Q7 FPC 3 PTTE PTT GND 4 PTT I PTT signal input Normally 5V Transmit 0V 5 KI1 I Key scan sense KEY1 6 Q6 O Key scan signal CN4 1 O BTL output for internal speaker 2 O BTL output for internal speaker CONTROL UNIT X53 3930 10 B 6 CN101 1 DGND Digit...

Page 52: ...ire with plug assy J29 0644 08 Clip assy J42 0495 08 Bushing S70 0459 18 Tact switch T07 0359 08 Speaker T91 0625 08 MIC element N08 0535 08 Dressed screw KMC 25A SPEAKER MICROPHONE KMC 25A Circuit Diagram PTT PF SSW MSW E Universal connector SP MIC SP SP 1000P 5V MIC MIC E 10µ 10µ More than 25V 0 01µ 10µ Shield 10K 10K NJM3404 12K 2 7K 2 7K 10K 27K 5 4 8 7 6 10µ 10µ 10µ 68K ECM SUB ECM MAIN JP 0 ...

Page 53: ...y 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 techni cian only SERVICE This radio is designed for easy servicing Refer to the schematic diagrams printed circuit board views and align ment procedures contained within Caution Do not bring the antenna clo...

Page 54: ...ivity 70dB Intermodulation 65dB Spurious response 70dB Audio Power Output 500mW Frequency Stability 5ppm Channel Frequency Spread 7 3MHz K 15MHz K2 TRANSMITTER Measurements made per EIA TIA 603 RF Power Output 6W 1W Spurious Harmonics 55dB 60dB Modulation 16KøF3E Wide FM Noise 45dB Audio Distortion Less than 3 Frequency Stability 5ppm Channel Frequency Spread 7 3MHz K 15MHz K2 Photo is TK 190 K ty...

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