Kenwood TK-272G Service Manual Download Page 46

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KNB-14/KNB-15A (Ni-Cd BATTERY)

LEVEL DIAGRAM

mak

e measurements in the AF section, con-

nect the A

el meter

. (ANT input :

-53dBm,

1kHz FM, 3kHz DEV(WIDE).)

In the RF section, use a 1000pF coupling capaci-

tor

. (The displa

y sho

ws the SSG input v

alue re-

quired to obtain 12dB SINAD

Without Local Le

vel.)

is set to the MIC input becomes 3kHz DEV

at 1kHz MOD

. (WIDE)

mak

e measurements in the AF section, con-

nect the A

el meter

In the RF section, use a 1000pF coupling ca-

pacitor

TK-272G

FM IF

SYSTEM

C310

Q301

Q19

XF1

–123dBm

–122dBm

–104dBm

–106dBm

–104dBm

–98dBm

180mV

rms

460mV

rms

Q22

C131

C242

IC16

IC14

IC11

360mV

rms

190mV

rms

420mV

rms

20mV

rms

0.63mV

rms

–7.9dBm

IC17

DAC

ALC

COMP

IDC

C243

10.5mV

rms

9mV

rms

33mV

rms

285mV

rms

275mV

rms

265mV

rms

320mV

rms

120mV

rms

MIC

IC14

+17.0dBm

–5.1dBm

RF (162.05MHz) (K)

RF (143.05MHz) (K2)

IF1 (49.95MHz)

IF2 (450kHz)

AF (1kHz)

IC15

AF VR

C206

C239

C246

C27

C28

C14

AF (1kHz)

VCO

RXLO

D10

+5.6dBm

C12

Power Module

5.0W

RF (162.05MHz)

AF (1kHz)

C173

Q30

IC4

Local Level

IC301

–3.2dBm

C30

C303

RF (162.05MHz) (K)

RF (143.05MHz) (K2)

KNB-15A

CIRCUIT DIAGRAM

SPECIFICATIONS

Voltage

: 7.2V (1.2V x 6)

Charging current

: 1100mAh

Dimensions

: 60.8W x 110.8H x 20.3D (mm)

(projections included)

Charger and charging time:
KSC-15 (normal charger), approximately 8 hours
KSC-16 (rapid charger), approximately 2 hours
Weight

: 210g

Discharge pin side

Breaker

(80

Charge pin side

Thermistor

Diode

Breaker

(70

KNB-14

CIRCUIT DIAGRAM

SPECIFICATIONS

Voltage

: 7.2V (1.2V x 6)

Charging current

: 600mAh

Dimensions

: 60.8W x 110.8H x 17.3D (mm)

(projections included)

Charger and charging time:
KSC-15 (normal charger), approximately 8 hours
KSC-16 (rapid charger), approximately 1 hour
Weight

: 165g

Discharge pin side

Breaker

(80

Charge pin side

Thermistor

Diode

Breaker

(70

TK-272G

BLOCK DIAGRAM

Summary of Contents for TK-272G

Page 1: ...F COMPONENTS 22 PARTS LIST 23 EXPLODED VIEW 30 PACKING 31 CONTENTS Key top DTMF K29 9043 02 ADJUSTMENT 32 PC BOARD VIEWS DISPLAY UNIT X54 3250 10 41 TX RX UNIT X57 587X XX 43 SCHEMATIC DIAGRAM 49 BLOCK DIAGRAM 53 LEVEL DIAGRAM 55 KNB 14 KNB 15A Ni Cd BATTERY 56 OPTIONS 57 SPECIFICATIONS BACK COVER Antenna KRA 14 Option Knob ENC K29 5331 03 Knob VOL K29 5332 03 Cabinet assy A02 3568 23 Knob PTT K29...

Page 2: ...d 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 SERVICE This radio is designed for easy servicing Refer to the schematic diagrams printed circuit board views and alignment procedures contained within SYSTEM SET UP Merchandise received...

Page 3: ...e transceiver is shown with the optional KNB 14 battery pack q q q q q Rotary encoder Your dealer can program the encoder as either Group Up Down only when the trunking board is installed or Channel Up Down default setting Rotate to select a group or channel Also rotate to adjust the squelch in Squelch Adjustment mode w w w w w LED indicator Lights red while transmitting Lights green while receivi...

Page 4: ...T tone pair using the tuning control The display shows TONE and tone pair No is selected Press OST key again the transceiver exits from OST mode and returns to the group channel mode 16 tone pairs for OST can be programmed by KPG 56D OST is useful to access the repeater with same radio frequency and different tone QT DQT 9 2 Tone Encode Select 1 Press the key programmed as 2 tone Encode Select A p...

Page 5: ...pout delay time TX dwell time or calling you can transmit on the current channel to answer to the call however revert channel is set to priority channel After resume time scan re starts and the transmission channel returns to the priority channel 3 Selected channel The transceiver reverts to the channel before scanning or the channel that you changed during scan 4 Last called channel The transceiv...

Page 6: ... when the D B D code matches Alert is not output An Option Signaling match is not displayed The transceiver is capable of having ID The format is DTMF The timing that the transceiver sends the ID is programmable Begin of TX ID BOT Begin of TX ID is sent at the beginning of transmission End of TX ID EOT End of TX ID is sent at the end of transmission Both Begin of TX ID is sent at the beginning of ...

Page 7: ... 2 Power ON Two seconds PC mode Received commands from PC Panel tuning mode Panel test mode Firmware programming mode Side1 Side2 Power ON Two seconds Clone mode Side1 3 Power ON Two seconds Self programming mode Side1 Power ON Two seconds REALIGNMENT 1 Modes Mode Function User mode For normal use Panel test mode Used by the dealer to check the fundamental characteristics Panel tuning mode Used by...

Page 8: ...set can be modified Normally it is not necessary to modify the destination data because their values are determined automatically when the frequency range frequency type is set The values should be modified only if necessary Data can be programmed into the flash memory in RS 232C format via the universal connector KPG 56D installation manual part No B62 1153 XX 6 Firmware Programming Mode 6 1 Pref...

Page 9: ...er and slave 4 Press the key on the master while the master displays CLONE The data of the master is sent to the slave While the slave is receiving the data PC is displayed When cloning of data is completed the master displays END and the slave automatically operates in the User mode The slave can then be operated by the same program as the master 5 The other slave can be continuously cloned When ...

Page 10: ...lay when a code is input Input it with DTMF key 1 Blank Side1 Data clear 8 2 Channel Setting Mode This is a mode for making channel settings with the panel keys without using the FPU Pressing Side2 when SELF is displayed sets Channel Setting Mode Select an item set using 3 then change the selection with the encoder The data displayed using 2 is stored in the memory and then proceeds to the next it...

Page 11: ...mode for using the panel keys to make function settings without using the FPU that operate on all channels Pressing the Side1 when SELF is displayed sets the Function Setting Mode Select an item set using 3 then change the selection with the encoder The data displayed using 2 is stored in the memory and then proceeds to the next item Pressing 3 proceeds to the next item without storing it in the m...

Page 12: ...Y3_8 5 2 Channel Up KEY3_9 Keylock KEY3_10 Lamp KEY3_11 2 Tone Encode KEY3_16 Select Monitor A KEY3_17 Monitor B KEY3_18 Monitor C KEY3_19 Monitor D KEY3_20 RF Power Low KEY3_21 Default Scan KEY3_22 Scan DEL ADD KEY3_23 Operator KEY3_27 Selectable Tone 6 3 No Function KEY4_OFF Talk Around KEY4_3 Display Character KEY4_5 Home Channel KEY4_7 Channel Down KEY4_8 Channel Up KEY4_9 Keylock KEY4_10 Lamp...

Page 13: ...EV_S T_ Priority REV_PRI_ Priority Talk Back REV_P T_ 23 Dropout 0 300 1s DODT___3 Default 3s Delay Time 24 Dwell Time 0 300 1s DWL___3 Default 3s DTMF 25 Digit Time 50 200 10ms DIGT__50 Default 50ms 26 Inter Digit Time 50 200 10ms IDT___50 Default 50ms 27 First Digit Time 50 200 10ms FDT___50 Default 50ms 28 FirstDigitDelay 100 1000 50ms RIST_100 Default 100ms 29 RiseTimewithQT 100 1000 50ms RTWQ...

Page 14: ... T Rekey time T O T Reset time Power on tone yes no Contorol tone yes no WArning tone yes no Battery Save on off Clear to Transpond Signaling Priority Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Side1 Look back time A Look back time B Revert channel Dropout delay time Dwell time Digit time First digit time Inter digit time First digit...

Page 15: ... assembly v 4 Taking cure not to cut the speaker lead b open the chassis and case assembly and pull the speaker lead with connector n Separating the chassis from the unit 1 Remove the three screws Lift the unit X54 and rise up the connecter lever in the arrow with your finger Remove the three hexagonal bosses and remove the twelve screws m 2 Remove the solder from the antenna terminal using a sold...

Page 16: ... IF system IC provides a second mixer second local oscillator limiting amplifier quadrature detector and RSSI Received Signal Strength Indicator The second mixer mixes the first IF signal with the 50 4MHz of the second local oscillator output TCXO X3 and produces the second IF signal of 450kHz The second IF signal is passed through the ceramic filter CF1 Wide without E CF2 Narrow and E type to rem...

Page 17: ... ANSQL TOI 95 FM IF IC4 5 43 Q36 SW Q32 33 34 SW DE EMP MUTE EXP HPF LPF HPF BEF IC14 2 1 IC15 2 2 AF AMP 41 IC11 AF PA AMP Q30 SW SP OUTPUT EXPANDER IC6 5RC SP MUTE 5 7 3 PLL DATA 16 8MHz REF OSC I M I N PLL IC IC2 PHASE COMPARATOR CHARGE PUMP LPF 5kHz 6 25kHz D2 4 D9 11 Q2 TX VCO Q10 RX VCO Q3 BUFF AMP Q4 RF AMP Q1 RF AMP Q7 8 T R SW 5kHz 6 25kHz 3 DTMF The DTMF input signal from the IF IC IC4 i...

Page 18: ...the VGG of the RF power amplifier to make both voltages the same The change of power high low is carried out by the change of the reference voltage 4 Encode signaling 1 QT DQT QT DQT data of the TOTCXO Line is output form pin 20 of the CPU The signal passes through a low pass CR filter and goes to the TCXO X1 The QT DQT data of the TOVCO Line is output form pin 22 of the CPU The signal passes thro...

Page 19: ...external device Data such as DTMF memories and the operating status are programmed into the EEPROM IC10 Flash Memory Note The flash memory holds data such as written with the FPU KPG 56D and firmware program User mode Test mode Tuning mode etc This data must be rewritten when replacing the flash memory EEPROM Note The EEPROM stores tuning data Deviation Squelch etc Realign the transceiver after re...

Page 20: ... Pin Name 1 VCC1 2 IN 3 IN 4 GND 5 SW1 6 SW2 7 OUT 8 VCC2 Block diagram Pin Pin Applied Pin Functions and uses No name voltage voltage 1 VCC1 2 2 2 5 Power supply voltage pin for the input amplifier section and division circuit Connect a bypass capacitor to this pin to reduce thehigh frequencyimpedancewiththeground forexample 1000pF 2 IN 1 7 4 95 Signal input pin Connect a coupling capacitor to th...

Page 21: ...O WRITE signal 45 LCDCS O LCD chip enable output 46 CNTDAT O Common data output EEPROM LCD SHIFTREG 1bitD AMODEM 47 CNTCLK O Common clock output EEPROM LCD SHIFTREG 1bitD AMODEM Pin Port I O Function No Name Pin Port I O Function No Name Pin Port I O Function No Shift register 2 BU4094BCFV IC6 Pin function 48 CSO Chip select signal 49 A19 Not used 50 59 A18 A9 Flash memory address bus 60 ACC 5V 61...

Page 22: ... switch LED Red Q25 Transistor DC Switch LED Green Q26 Transistor DC switch Squelch Q27 FET DC switch 5T Save Q28 Transistor DC switch 5M Q30 FET SP Mute switch Q31 Transistor Clock frequency shift Q32 34 Transistor DC switch SP Mute Q35 1 2 FET Mute switch MIC line mute Q35 2 2 FET DC switch Q36 FET Mute switch Q301 FET RF amplifier D1 Diode Unlock detect D2 Variable Frequency control capacitance...

Page 23: ...ODE D507 MA2S111 DIODE IC501 LC75823W MOS IC Q501 2SB1132 Q R TRANSISTOR Q502 2SC4617 S TRANSISTOR X57 5870 11 TX RX UNIT D18 B30 2019 05 LED RED GRE C1 CK73GB1H471K CHIP C 470PF K 1 1A A02 3568 23 CABINET ASSY 2 3B A82 0036 02 REAR PANEL 3 2C B09 0351 03 CAP SP MIC 4 2B B11 1220 03 ILLUMINATION GUIDE 5 2B B38 0820 05 LCD 6 1D B46 0470 00 WARRANTY CARD 7 1D B62 1388 00 INSTRUCTION MANUAL 8 3B E04 ...

Page 24: ...CHIP C 15PF G K2 C62 CC73GCH1H221J CHIP C 220PF J K C63 CC73GCH1H050B CHIP C 5 0PF B C64 CC73GCH1H010B CHIP C 1 0PF B C68 C92 0565 05 CHIP TAN 6 8UF 10WV C70 CK73GB1H103K CHIP C 0 010UF K C71 CC73GCH1H101J CHIP C 100PF J C72 CC73GCH1H060B CHIP C 6 0PF B K C72 CC73GCH1H200J CHIP C 20PF J K2 C73 CK73GB1H102K CHIP C 1000PF K C74 CK73FB1E104K CHIP C 0 10UF K C75 76 CK73GB1H102K CHIP C 1000PF K C78 CC7...

Page 25: ...5 CC73GCH1H101J CHIP C 100PF J C226 227 CK73GB1H562J CHIP C 5600PF J C229 CK73FB1H102K CHIP C 1000PF K C230 CK73GB1H562J CHIP C 5600PF J C231 C92 0521 05 CHIP TAN 0 47UF 20WV C232 CK73GB1H471K CHIP C 470PF K C233 CC73GCH1H151J CHIP C 150PF J C234 235 CK73GB1H272J CHIP C 2700PF J C236 CK73GB1C104K CHIP C 0 10UF K C238 CK73GB1H392K CHIP C 3900PF K C239 CK73GB1C104K CHIP C 0 10UF K C240 CK73GB1H272J ...

Page 26: ...L40 4785 85 SMALL FIXED INDUCTOR 0 47U X1 L77 1794 05 TCXO 16 8MHZ X2 L78 0479 05 RESONATOR 3 58MHZ X3 L77 1810 05 CRYSTAL RESONATOR 9 8304MHZ X3 L77 1835 05 CRYSTAL RESONATOR 9 8304MHZ XF1 L71 0546 05 CRYSTAL FILTER 49 95MHZ CP1 R90 0724 05 MULTI COMP 1K X4 CP2 9 R90 0741 05 MULTIPLE RESISTOR CP10 R90 0724 05 MULTI COMP 1K X4 CP11 18 R90 0741 05 MULTIPLE RESISTOR CP19 R90 0718 05 MULTI COMP 4 7K ...

Page 27: ...5 CHIP R 0 OHM R120 121 RK73GB1J473J CHIP R 47K J 1 16W R122 RK73GB1J102J CHIP R 1 0K J 1 16W R123 RK73GB1J104J CHIP R 100K J 1 16W R124 RK73GB1J334J CHIP R 330K J 1 16W R126 RK73GB1J472J CHIP R 4 7K J 1 16W R127 RK73GB1J333J CHIP R 33K J 1 16W R128 RK73GB1J102J CHIP R 1 0K J 1 16W R129 RK73GB1J224J CHIP R 220K J 1 16W R130 R92 1252 05 CHIP R 0 OHM R131 RK73GB1J101J CHIP R 100 J 1 16W R132 RK73GB1...

Page 28: ...54 RK73GB1J184J CHIP R 180K J 1 16W R255 RK73GB1J474J CHIP R 470K J 1 16W R256 258 R92 1252 05 CHIP R 0 OHM R259 RK73GB1J473J CHIP R 47K J 1 16W R260 261 RK73GB1J224J CHIP R 220K J 1 16W R301 R92 0679 05 CHIP R 0 OHM R302 RK73GB1J121J CHIP R 120 J 1 16W K R302 RK73GB1J221J CHIP R 220 J 1 16W K2 R303 RK73GB1J101J CHIP R 100 J 1 16W R304 RK73GB1J472J CHIP R 4 7K J 1 16W R305 R92 1252 05 CHIP R 0 OHM...

Page 29: ...P TRANSISTOR Q13 14 DTA144EE DIGITAL TRANSISTOR Q15 DTC114EE DIGITAL TRANSISTOR Q16 DTA114YE DIGITAL TRANSISTOR Q17 DTC144EE DIGITAL TRANSISTOR Q18 FP210 TRANSISTOR Q19 3SK166A FET Q20 21 UMG3N TRANSISTOR Q22 2SC4619 TRANSISTOR Q23 UMC4 TRANSISTOR Q24 25 DTC114EE DIGITAL TRANSISTOR Q26 DTA114EE DIGITAL TRANSISTOR Q27 UPA572T FET Q28 DTA114YE DIGITAL TRANSISTOR Q30 2SK1588 FET Q31 2SC4619 TRANSISTO...

Page 30: ...13 A M3 6x4 N09 2319 05 B M2x3 5 N09 2331 05 C NUT N14 0582 14 D NUT N14 0583 04 E M2 6x6 N30 2606 46 F M2x3 N39 2030 46 G M2x5 N67 2005 46 H f2x4 5 N78 2045 46 I f2x3 N79 2030 46 J f2x5 N82 2005 46 41 H D 40 5 4 11 2 37 Jx8 IC1 G F F 15 17 18 DISPLAY unit 49 16 43 12 B 38 10 TX RX unit A 2 27 28 A 25 B 8 702 21 H TX RX unit B 2 14 E I 704 703 9 46 36 19 48 ...

Page 31: ...658 05 6 WARRANTY CARD B46 0470 00 33 PROTECTION BAG H25 0085 04 39 SP MIC HOLDER J21 4493 04 K SCREW SET N99 2012 05 29 PACKING FIXTURE H12 1487 02 30 PACKING FIXTURE H12 3093 02 35 ITEM CARTON CASE H52 1697 02 32 PROTECTION COVER H21 0769 04 7 INSTRUCTION MANUAL B62 1388 00 50 BATTERY ASSY W09 0940 15 31 PACKING FIXTURE H12 3094 03 ...

Page 32: ... 10mV to 10V DC DVM Input Impedance High input impedance for minimum circuit loading 5 Oscilloscope DC through 30MHz 6 High Sensitivity Frequency Range 10Hz to 1000MHz Frequency Counter Frequency Stability 0 2ppm or less 7 Ammeter 5A 8 AF Volt Meter Frequency Range 50Hz to 10kHz AF VTVM Voltage Range 1mV to 10V 9 Audio Generator AG Frequency Range 50Hz to 5kHz or more Output 0 to 1V 10 Distortion ...

Page 33: ...transceiver has a test mode To enter test mode press the 2 key and turn the power on Hold the 2 key until the test channel No and test signalling No appear on LCD Test mode can be inhibited by programming To exit test mode switch the power on again The following functions are available in test mode Controls PTT Used when making a transmission Side2 Monitor ON and OFF Side1 Changes wide and narrow ...

Page 34: ...e set has been adjusted for the frequencies shown in the following table When required re adjust them following the adjustment procedure to obtain the frequencies you want in actual operation Frequency MHz K type Channel No RX Frequency TX Frequency 1 162 05000 162 00000 2 150 05000 150 00000 3 173 95000 174 00000 4 162 00000 162 00000 5 162 20000 162 20000 6 162 40000 162 40000 7 16 Signalling Si...

Page 35: ...ation W L F Q T QTfine deviation W C F Q T QTfine deviation W H F D Q T DQTFinedeviation W L F D Q T DQTFinedeviation W C F D Q T DQTFinedeviation W H S E N S Sensitivity Low S E N S Sensitivity Cen S E N S Sensitivity Hi Wide V Q T Narrow Narrow QT VCO balance Narrow X Q T QTTCXObalance Narrow Side1 Side1 V Q T QT VCO balance Wide X Q T QTTCXObalance Wide V Q T QT VCO balance W L V Q T QT VCO bal...

Page 36: ...V 0 1V TX 3 CH Sig 2 1 0 8V or more K PTT ON 0 6V or more K2 4 CH Sig 3 1 3 5V 0 1V K K2 PTT ON Transmitter Section Item Condition Measurement Adjustment Specifications Test equipment Terminal Parts Method Remark 1 Frequency 1 PTT ON Freq Counter ANT VR1 Center frequency Adjust Power meter 162 0 MHz 100Hz K Am meter 143 0 MHz 100Hz K2 2 Max Power 1 Adj item HPOW Check 5 2W or more Check Adjust 256...

Page 37: ... Dev meter filter AG LPF 15kHz AF VTVM HPF OFF 2 Adj item M A X M A X M A X Adjust PTT ON Narrow 1 Adj item MAX 2 1kHz Adjust According to PTT ON the larger 8 MIC Panel Test Mode Check 2 2 3 0kHz Sensitivity 1 CH Sig 1 1 Check AG 1kHz 15mV LPF 3kHz PTT ON 9 QT TCXO Adj item X Q T ANT Encoder Balance Adjust 200 SP MIC connector knob Wide Narrow 10 DQT TCXO Adj item X D Q T Balance Adjust 150 Wide N...

Page 38: ...st PTT ON 15 DTMF 1 Adj item DTMF Wide 2 5kHz 0 1kHz Deviation Adjust Narrow 1 25kHz Adjust LPF 15kHz Wide HPF OFF PTT ON Narrow 2 Adj item DTMF Adjust PTT ON 16 TONE 1 Adj item TONE Wide 3 0kHz 0 1kHz Deviation Adjust Narrow 1 5kHz Adjust LPF 15kHz Wide HPF OFF PTT ON Narrow 2 Adj item TONE Adjust PTT ON 17 BATT 1 Adj item BATT Power meter ANT Encoder After pressing the BATT terminal Detection Ad...

Page 39: ...m SENS DVM Encoder knob fL S E N S 88 K 60 K2 Adjustment Adjust fC S E N S 134 K 100 K2 fL fc fH S E N S S E N S S E N S fH S E N S 180 K 130 K2 2 BPF PANEL TEST MODE Tracking generator ANT L305 L306 L307 Adjust wave form CH Sig 2 1 spectrum analyzer to figure 1 fL Tra G setting 40dBm BPF CH Sig 1 1 Check wave form to figure 2 fC CH Sig 3 1 Check wave form to figure 1 fH Fig 1 K K ...

Page 40: ...row 116dBm 0 35µV 6 Squelch Panel Test Mode Check Squelch must Check 1 CH Sig 1 1 be opened SQ Level SQL5 SSG OUT 118dBm 0 28µV 2 SSG OUT OFF Squelch must be closed Item Condition Measurement Adjustment Specifications Test equipment Terminal Parts Method Remark ADJUSTMENT Adjustment points TX RX unit X57 587 Component side view Foil Side View VR1 Frequency adjustment TC1 Transmit lock voltage adju...

Page 41: ...KIN3 KIN2 KIN1 KIN0 LMP GND CL DI 5M CE C504 C505 C506 C507 C508 C509 C515 C516 CP501 CP502 CP503 D501 D502 D503 D504 D505 D507 IC501 1 16 48 33 17 32 64 49 L501 L502 Q501 B C E Q502 R501 R502 R503 R504 R505 R506 R507 R508 R509 R510 R512 R514 R517 R518 R519 R520 R521 R522 R523 R524 CN501 C513 R511 R513 R516 R515 DISPLAY UNIT X54 3250 10 Component Side View O N f e R s s e r d d A 1 0 5 C I E 4 1 0...

Page 42: ...C225 C223 C199 R158 C184 R208 R184 C221 C203 C58 R71 C238 C231 IC16 R70 R204 C232 R213 R212 R123 R182 C206 R144 C183 R143 R152 R154 R153 R232 R231 R171 R168 R169 R175 R233 R223 C253 R31 R60 C190 C236 R181 C212 R167 R206 R207 R148 R147 R198 R172 Q35 1 2 3 6 5 4 R138 F1 C104 IC3 1 4 8 5 R59 R151 R127 D G S R133 R137 R224 C162 R120 R121 C180 L41 CP10 CP2 R122 R118 L43 L40 Q15 C111 1 2 R241 R235 R234 ...

Page 43: ...3 C31 C9 Q1 R20 C74 C73 R19 D7 C52 C75 C110 C109 C23 C24 C25 R75 R74 C121 Q11 D12 C84 R53 Q18 1 2 3 4 5 Q21 1 2 5 3 4 1 2 5 3 4 1 2 5 3 4 R1 UL L2 R4 R41 Q16 R C T SB A1 5C C113 Q28 R109 R107 R106 R69 R98 R108 CD1 R43 R77 C120 A3 SB A2 A4 R58 R56 R57 R91 R90 R89 R88 D21 L302 Q19 C112 C28 C8 R301 Q14 C108 R44 R116 L38 C153 C126 C125 R87 L37 L36 R95 R39 R29 L19 R28 Q20 L15 R18 R33 L20 R94 R99 C131 R...

Page 44: ...14 C16 L4 C18 R36 C27 C64 L31 D9 C62 L26 C72 L22 C63 L30 R30 R22 R105 C133 R93 R97 C124 R86 C114 C123 R84 R103 R102 R117 C70 R48 L24 C78 R51 C44 C43 C42 CP1 D1 R8 R7 C1 R257 L14 R14 C36 R21 C37 C4 C5 C48 C49 C32 C142 C119 C122 C143 C144 C163 C164 C166 C167 C170 C171 PTT IC4 1 8 16 9 IC8 1 3 5 4 IC9 1 3 5 4 J1 Q24 Q25 R110 R111 R112 R113 EN1 R119 R124 R128 R129 R132 TAO M MUTE S MUTE A5 TAI A6 R142...

Page 45: ...A B C D E F G I H J K L M O N P Q S R 1 2 3 4 5 6 7 TK 272G SCHEMATIC DIAGRAM Note Component marked with a dot are Parts of pattern 1 ...

Page 46: ...RF 162 05MHz K RF 143 05MHz K2 IF1 49 95MHz IF2 450kHz AF 1kHz IC15 AF VR C206 C239 Q2 Q3 C246 C27 C28 C14 AF 1kHz VCO RXLO D10 D5 5 6dBm C12 Power Module 5 0W RF 162 05MHz AF 1kHz RX TX C173 Q30 IC4 Local Level 4 10 6 7 3 5 IC301 2 7 D6 3 2dBm Q4 C30 C303 6 7 RF 162 05MHz K RF 143 05MHz K2 KNB 15A CIRCUIT DIAGRAM SPECIFICATIONS Voltage 7 2V 1 2V x 6 Charging current 1100mAh Dimensions 60 8W x 110...

Page 47: ...0 Screw Clip assy N46 3016 60 Screw Case N80 2005 41 Screw MIC unit S50 1415 05 Tact switch PTT T07 0290 05 Loudspeaker 1W 8Ω T91 0534 08 Condenser MIC Re marks KMC 17 Speaker microphone Parts No Description New parts Ref No A02 1979 08 Case Front A02 0980 08 Case Rear E11 0453 08 Phone jack E30 3239 08 Curl cord F07 1414 08 Cover K29 5077 08 Lever PTT S70 0444 08 Tact switch PTT T07 0335 05 Louds...

Page 48: ...rrow FM Noise 45dB Wide 43dB Narrow Audio Distortion Less than 5 Frequency Stability 3 0ppm Channel Frequency Spread 24MHz K 14MHz K2 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...

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