Equipment information

Kenwood TK-270G Transceiver
Manufacturer:
Model:
TK-270G
Date:
1999
Category:
Group:
Description:
VHF FM TRANSCEIVER

Information

General Frequency Range ............................................................ 150~174MHz Number of channels ......................................................... Max. 8 (TK-260G) Max. 128 (TK-270G) Number of groups ............................................................ Max. 128 (TK-270G) Channel Spacing .............................................................. 25kHz, 30kHz (Wide) 12.5kHz, 15kHz (Narrow) PLL Step .......................................................................... 2.5kHz, 5kHz, 6.25kHz, 7.5kHz Operating Voltage ............................................................ 7.5 VDC Battery Life ....................................................................... More than 8 hours at 5 watts (5-5-90 duty cycle with KNB-15A battery) Operating Temperature renge ......................................... -30°C to +60°C (-22 °F to +140 °F) Dimensions and Weight With KNB-14 (7.2V 600mAh battery) ............................. 58 (2-5/16) W x 135 (5-5/16) H x 32 (1-1/4) D mm (in) 400g (0.88lbs) With KNB-15A (7.2V 1100mAh battery) ......................... 58 (2-5/16) W x 135 (5-5/16) H x 35 (1-3/8) D mm (in) 440g (0.97lbs) Receiver (Measurements made per EIA standard EIA-RS316B) Sensitivity EIA 12dB SINAD ........................................................... 0.25mV (Wide)/0.28mV (Narrow) Selectivity ......................................................................... 70dB (Wide)/65dB (Narrow) Intermodulation ................................................................ 65dB (Wide)/60dB (Narrow) Spurious responce ........................................................... 65dB Audio Power Output ......................................................... 500mW Frequency Stability .......................................................... ±3ppm Channel Frequency Spread ............................................. 24MHz Transmitter (Measurements made per EIA standard EIA-RS 316B) RF Power output .............................................................. 5W/1W Spurious and Harmonics .................................................. 70dB Modulation ....................................................................... 16KfF3E (Wide)/11KfF3E (Narrow) FM Noise .......................................................................... -45dB (Wide)/-43dB (Narrow) Audio Distortion ................................................................ Less than 5% Frequency Stability .......................................................... ±3ppm Channel Frequency Spread ............................................. 24MHz

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Service Manual
Manual Type:
Service Manual
Pages:
50
Size:
4.50 Mbytes (4717981 Bytes)
Language:
english
Revision:
Manual-ID:
B51-8493-00(S) 1425
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
2015 06 15
MD5:
b48e40ea57f5f4d78c76bbcbe90b3fda
Downloads:
1398

Information

GENERAL ... 2 SYSTEM SET-UP ... 2 OPERATING FEATURES ... 3 REALIGNMENT ... 8 DISASSEMBLY FOR REPAIR ... 16 CIRCUIT DESCRIPTION ... 17 SEMICONDUCTOR DATA ... 21 DESCRIPTION OF COMPONENTS ... 23 PARTS LIST ... 24 EXPLODED VIEW ... 30 CONTENTS Key top (DTMF) (K29-5330-02) TK-260G TK-270G PACKING ... 32 ADJUSTMENT ... 33 PC BOARD VIEWS DISPLAY UNIT (X54-3250-10) ... 41 TX-RX UNIT (X57-587X-XX) ... 43 SCHEMATIC DIAGRAM ... 49 BLOCK DIAGRAM ... 57 LEVEL DIAGRAM ... 59 KNB-14/KNB-15A (Ni-Cd BATTERY) ... 60 OPTIONS ... 61 SPECIFICATIONS ... BACK COVER 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

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