Kenwood TK-270G - Manuals

TK-260G/270G 5 OPERATING FEATURES 9) Reverse (REV) (Note: C type only) When the REV switch is pressed, transmission can beperformed with the receive frequency and receive signaling,and reception can be performed with the transmit frequencyand transmit signaling.When REV is on, HORN ALERT and PUBLIC ...

TK-260G/270G 6 OPERATING FEATURES 6 Selected with talkbackThe transceiver reverts to the channel before scanning or the channel that you changed during scan. 8) Scan End When you reactivate the key programmed to the scan function during scan mode, scan ends. The scan icon ("SCN") and "SC...

TK-260G/270G 7 OPERATING FEATURES 4) Battery Warning This transceiver has a battery warning feature. If low voltage is detected during transmission, the transceiver warns you bya flashing red "LED". When the voltage is detected to be even lower during transmission, the transceiver stops tran...

TK-260G/270G 8 2000Hz 2000Hz 2000Hz 100ms 100ms 100ms 100ms 100ms • Group Call Tone The group call tone informs the user of a group call in DTMF/ 2 Tone Option Signaling. This tone repeats 7 times. • Individual Tone Individual tone is issued on receiving selective call by DTMF/ 2 Tone Option Signali...

TK-260G/270G 9 6. Firmware Programming Mode 6-1. Preface Flash memory is mounted on the TK-260G/270G. This allows the TK-260G/270G to be upgraded when new featuresare released in the future. (For details on how to obtain thefirmware, contact Customer Service.) 6-2. Connection procedure Connect the T...

TK-260G/270G 10 Fig. 2 Cloning cable MBL PSB GND PTT/RXD ME MIC REMOTE/TXD CM GNDREMOTE/TXD PTT/RXD 8 1 1 8 9. If you want to continue programming other TK-260G/ 270Gs, repeat steps 5 to 8. Notes: ● To start the Firmware Programmer from KPG-56D, theFpro path must be set up by the KPG-56D Setup. ● Th...

TK-260G/270G 11 8-2. Channel Setting Mode This is a mode for making channel settings with the panel keys without using the FPU. Pressing [MON] when "SELF" is displayed, sets ChannelSetting Mode.Select an item set using [ 3 ] then change the selection with the encoder.The data displayed using...

TK-260G/270G 13 REALIGNMENT 8-3. Function Setting Mode This is a mode for using the panel keys to make function settings without using the FPU, that operate on all channels. Pressing the [LAMP] when "SELF" is displayed, sets theFunction Setting Mode.Select an item set using [ 3 ] then change...

TK-260G/270G 16 DISASSEMBLY FOR REPAIR Separating the case assembly from the chassis. 1. Remove the two knobs z and three round units x . 2. Remove the two screws c . 3. Expand the right and left sides of the bottom of the case assembly, lift the chassis, and remove it from the caseassembly v . 4. T...

TK-260G/270G 17 Fig. 3 Wide/Narrow changeover circuit CIRCUIT DESCRIPTION 1. Frequency configuration The receiver utilizes double conversion. The first IF is 49.95 MHz and the second IF is 450 kHz. The first local oscillator signal is supplied form the PLL circuit. The PLL circuit in the transmitter...

TK-260G/270G 18 CIRCUIT DESCRIPTION Fig. 4 AF Amplifier and Squelch Fig. 5 PLL circuit 5) Audio amplifier circuit The demodulated signal from IC4 is amplified by IC16 (2/2), high-pass filtered, low-pass filtered, high-pass filtered,band-eliminate filtered, and de-emphasized by IC14.The signal then g...

TK-260G/270G 19 CIRCUIT DESCRIPTION Fig. 7 Microphone amplifier Fig. 8 Drive and final amplifier and APC circuit 3) UNLOCK DETECTOR If a pulse signal appears at the LD pin of IC2, an unlockcondition occurs, and the DC voltage obtained form D1,R1, and C6 causes the voltage applied to the microprocess...

TK-260G/270G 20 CIRCUIT DESCRIPTION Low battery warning The red LED flashes duringtransmission. The red LED flashes and acontinuous beep soundswhile PTT is pressed. Battery condition The battery voltage is low butthe transceiver is still usable. The battery voltage is low andthe transceiver is not a...

TK-260G/270G 21 CIRCUIT DESCRIPTION/SEMICONDUCTOR DATA Fig. 10 Control system 8. CONTROL SYSTEM Keys and channel selector circuit.The signal from the keys and channel selector are directly input to the microprocessor, as shown in fig. 10. SEMICONDUCTOR DATA LCD Driver : LC75823W (Display UNIT IC501)...

TK-260G/270G 22 SEMICONDUCTOR DATA Microprocesser : 30622M4102GP (TX-RX UNIT : IC13) ■ Pin function 1 APC O TX:Automatic Power Control data output RX:BPF tuning data 2 DTMF O DTMF/2TONE BEEP output 3 2TN I 2TONE decode pulse input 4 DTMSTD I DTMF decode detect detect:H 5 SIM I Destnation selct 6 BYT...

TK-260G/270G 23 IC1 IC RF Power Module IC2 IC PLL system IC3 IC Comparator (APC) IC4 IC FM IF system IC5,6 IC Shift register / Output expander IC7 IC Voltage regulator / 5V IC8 IC Voltage detector / Reset IC9 IC Voltage detector / INT IC10 IC EEPROM IC11 IC AF Power amplifier IC12 IC Flash memory IC...

TK-260G/270G PARTS LIST 24 Parts No. Description Address New parts Destination Destination TK-260G/270G Ref. No. Parts No. Description Address New parts * New Parts. indicates safety critical components.Parts without Parts No. are not supplied.Les articles non mentionnes dans le Parts No. ne sont pa...

TK-260G/270G 32 E F 1 2 3 PACKING 32.PACKING FIXTURE (H12-1487-02) 4. CAP (SP/MIC) (B09-0351-03) 34.PROTECTION BAG (H25-2012-04) 45.BELT HOOK (J29-0624-03) 7. WARRANTY CARD (B46-0470-00) : K 33.PROTECTION BAG (H25-0085-04) 8. INSTRUCTION MANUAL (B62-1113-00) : 270G 9. INSTRUCTION MANUAL (B62-1129-00...

TK-260G/270G 33 ADJUSTMENT Test Equipment Required for Alignment Test Equipment Major Specifications 1. Standard Signal Generator Frequency Range 150 to 175MHz (SSG) Modulation Frequency modulation and external modulation. Output -127dBm/0.1 µ V to greater than -47dBm/1mV 2. Power Meter Input Impeda...

TK-260G/270G 34 • Preparations for tuning the transceiver Before attempting to tune the transceiver, connect the unit to a suitable power supply. W h e n e v e r t h e t r a n s m i t t e r i s t u n e d , t h e u n i t m u s t b e connected to a suitable dummy load (i.e. power meter). The speaker o...

TK-260G/270G 35 H.P.O.W. . 1. ADJUSTMENT K,M 150-174(MHz) TEST Ch RX frequency (MHz) TX frequency (MHz) L 150.05000 150.00000 L’ 156.05000 156.00000 M 162.05000 162.00000 H’ 168.05000 168.00000 H 173.95000 174.00000 Press [ ° ], to enter tuning mode. Use the [ 2 ] key to write tuning data through th...

TK-260G/270G 40 ADJUSTMENT Adjustment points TX-RX unit (X57-587)Component side view Foil Side View VR1 : Frequency adjustment TC1 : Transmit lock voltage adjustmentTC2 : Receive lock voltage adjustmentL305:L306: Band-pass filter waveform adjustment L307:BPF : Band-pass filter test pointCV(LV) : Loc...

A B C D E F G H I J K L M N O P Q R S 1 3 4 5 6 7 8 9 10 11 12 13 14 2 41 42 TK-260G/270G DISPLAY UNIT (X54-3250-10) Component Side View PC BOARD VIEW DISPLAY UNIT (X54-3250-10) Foil Side View D506 LCD D508 D509 D510 LED J72-0663-02 d i r e c t i o n D51 1 D512 D513 D514 D515 1 2 3 A 4 5 6 B 7 8 9 C...

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-260G SCHEMATIC DIAGRAM Note) Component marked with a dot ( • ) are Parts of pattern 1.

60 59 KNB-14/KNB-15A (Ni-Cd BATTERY) LEVEL DIAGRAM T o make measurements in the AF section, con- nect the AC level meter . (ANT input : -53dBm, 1kHz FM, 3kHz DEV(WIDE).) In the RF section, use a 1000pF coupling capaci- tor . (The display shows the SSG input value re- quired to obtain 12dB SINAD W it...

TK-260G/270G 61 OPTIONS Parts No. Description New parts Ref. No. A02-0907-08 Case (Front) A02-0908-08 Case (Rear) B09-0316-08 Cap D10-0606-08 Lever (PTT) E11-0421-05 Phone jack E30-3138-08 Curl cord F07-0889-08 Silicon rubber (PTT) G53-0569-08 Packing (MIC case) J29-0440-08 Clip assy J39-0601-08 Pac...

TK-260G/270G 62 General Frequency Range ............................................................ 150~174MHzNumber of channels ......................................................... Max. 8 (TK-260G) Max. 128 (TK-270G)Number of groups ...............................................................