Kenwood TK-890 Transceiver
Manufacturer:
Model:
TK-890
Date:
2001
Category:
Group:
Description:
UHF FM TRANSCEIVER

Information

GENERAL Frequency Range ............................................ TK-890 : 450 to 490MHz (K), 480 to 512MHz (K2), 403 to 430MHz (K3) TK-890H : 450 to 480MHz (K) Number of Channels ...................................... 160 channels Channel Spacing ............................................. 25kHz (Wide) / 12.5kHz (Narrow) Operating Voltage ........................................... TK-890 : 13.6V DC± 15%, TK-890H : 13.4V DC±15% negative ground Current Drain .................................................. 0.6A on standby 2.2A on receive TK-890 : 12A, TK-890H : 28A on transmit Duty Cycle ...................................................... Transmit 20% Frequency Stability ......................................... ±0.0002% (–30°C to +60°C) Operating Temperature Range ....................... –30°C to +60°C (–22°F to +140°F) Dimensions & Weight .................................... TK-890 : 7.01" (178mm) W x 2.36" (60mm) H x 7.68" (195mm) D, 5.06lbs (2.3kg) 7.01" (178mm) W x 2.36" (60mm) H x 8.98" (228mm) D, 5.72lbs (2.6kg) with KCH-10 TK-890H : 7.01" (178mm) W x 2.36" (60mm) H x 12.88" (327mm) D, 7.92lbs (3.6kg) Receiver (Measurements made per EIA standard EIA/TIA-240-D) Antenna Impedance ....................................... 50Ω Sensitivity ....................................................... 12dB SINAD : 0.25μV, 20dB Quieting : 0.35μV Selectivity ....................................................... 85dB (Wide) / 77dB (Narrow) Intermodulation .............................................. 80dB (Wide) / 75dB (Narrow) Spurious and Image Rejection ....................... 90dB Audio Output .................................................. 13W at 4Ω less than 5% distortion (12W at 4Ω less than 3% distortion) Frequency Stability ......................................... ±0.0002% from –30°C to +60°C Band Spread ................................................... 20MHz Transmitter (Measurements made per EIA standard EIA-152-C) RF Power Output ............................................ TK-890 : 40W adjustable to 5W TK-890H : 100W (450 to 470MHz), 75W (470 to 480MHz) adjustable to 40W Antenna Impedance ....................................... 50Ω Spurious Response ........................................ 80dB Type of Emission ............................................ 16K0F3E (Wide) / 11K0F3E (Narrow) FM Hum and Noise ........................................ 50dB (Wide) / 44dB (Narrow) Microphone Impedance ................................. 600Ω Audio Distortion .............................................. Less than 2% at 1000Hz Band Spread ................................................... TK-890 : 40MHz (K), 32MHz (K2), 27MHz (K3) TK-890H : 30MHz

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Service Manual
Manual type:
Service Manual
Pages:
97
Size:
6.00 Mbytes (6290984 Bytes)
Language:
english
Revision:
Revised
Manual ID:
B51-8439-10 (N) 1233
Date:
Quality:
Electronic document, no scan, very well readable.
Upload date:
2015 06 15
MD5:
e62e4aa69c9174d62983ef29b8cdebb6
Downloads:
1757

Information

This service manual applies to products with 30300001 or subsequent serial numbers. (KCH-10 and KCH-11 are applicable to the productions June 2001 and after.) In terms of the products with the serial numbers earier than 30300001, refer to the TK-890.(B)/H(B) service manual as per part No. B51-8439-00 and the TK-890(B) service manual as per part No. B51-8457-00. GENERAL ... 2 SYSTEM SET-UP ... 4 OPERATING FEATURES ... 5 INSTALLATION ... 16 DISASSEMBLY FOR REPAIR ... 22 CIRCUIT DESCRIPTION ... 26 SEMICONDUCTOR DATA ... 32 DESCRIPTION OF COMPONENTS ... 36 PARTS LIST ... 39 EXPLODED VIEW ... 58 PACKING ... 62 ADJUSTMENT ... 66 TERMINAL FUNCTION ... 76 WIRING ... 79 PC BOARD VIEWS / CIRCUIT DIAGRAMS DISPLAY UNIT (X54-3190-20) : KCH-10 ... 81 DISPLAY UNIT (X54-3200-20) : KCH-11 ... 83 CONTROL UNIT (X57-5620-XX) (B/3) ... 89 FINAL UNIT (X57-5620-XX) (C/3) : TK-890.(B) ... 99 TX-RX UNIT (X57-5620-XX) (A/3) ... 103 FINAL UNIT (X45-3570-10) : TK-890H(B) ... 115 BLOCK DIAGRAM ... 119 SPECIFICATIONS ... 121 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 this publication date. Changes which may occur after publication are covered by either Service Bulletins or Manual Revisions, which are issued as required.

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