Kenwood TK-481 Transceiver
Fabricante:
Modelo:
TK-481
Data:
2001
Categoria:
Grupo:
Descrição:
900MHz FM TRANSCEIVER

Informação

General Frequency Range RX ......................................................... TK-480 : 851 to 870MHz TK-481 : 935 to 941MHz TX ......................................................... TK-480 : 806 to 825MHz (851 to 870MHz : Talk-Around) TK-481 : 896 to 902MHz (935 to 941MHz : Talk-Around) Systems .................................................... Maximum 32 Groups ...................................................... Maximum 250 Conventional Channels ............................. Maximum 600 Channel Spacing ....................................... TK-480 : 25kHz (PLL channel step 12.5kHz) TK-481 : 12.5kHz (PLL channel step 12.5kHz) Battery Voltage ......................................... DC 7.5V Battery Life ............................................... More than 8 hours at 5-5-90 duty cycle with KNB-16A battery Temperature Range .................................. –30°C to +60°C (–22°F to +140°F) Dimensions and Weight With KNB-16A (1100mAh battery) ...... 135 (5.33) H x 58 (2.29) W x 34 (1.34) D mm (inch) 1.01lbs (460g) (Dimensions not including protrusions, weight includes Antenna and belt hook) Receiver (Measurements made per TIA/EIA-603) RF Input Impedance ................................. 50Ω Sensitivity 12dB SINAD* ....................................... 0.30μV Selectivity* ............................................... TK-480 : 70dB±25kHz TK-481 : 63dB±12.5kHz Intermodulation* ...................................... TK-480 : 65dB±25/50kHz TK-481 : 60dB±12.5/25kHz Spurious (Except for IF 1/2)* .................... 70dB Frequency Stability ................................... TK-480 : ±0.00025% (–30°C to +60°C) TK-481 : ±0.00015% (–30°C to +60°C) Channel Spread......................................... TK-480 : 19MHz TK-481 : 6MHz Audio Power Output ................................. 500mW at 16Ω less than 5% distortion * : Typical specifications Transmitter (Measurements made per TIA/EIA-603) RF Power Output High ...................................................... 2.5W Low ...................................................... 1W RF Output Impedance .............................. 50Ω Spurious .................................................... –60dB Modulation ................................................ TK-480 : 16K0F3E, 16K0F1D, 15K0F2D, 14K0F3E, 14K0F1D, 13K0F2D TK-481 : 11K0F3E, 11K0F1D, 10K5F2D FM Noise .................................................. TK-480 : –45dB TK-481 : –40dB Audio Distortion ........................................ 5.0% or less Frequency Stability ................................... TK-480 : ±0.00025% (–30°C to +60°C) TK-481 : ±0.00015% (–30°C to +60°C) Channel Spread......................................... TK-480 : 64MHz TK-481 : 45MHz

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Manual de serviço
Tipo de manual:
Manual de serviço
Páginas:
54
Tamanho:
2.83 Mbytes (2969463 Bytes)
Idioma:
english
Revisão:
Revised II
ID de manual:
B51-8408-20 (N) 1015
Data:
2001 03 01
Qualidade:
Documento eletrônico, digitalização, bem legível.
Data de upload:
2017 01 01
MD5:
ad1aa1db4617cadf6e9d1d918457f124
Downloads:
1046

Informação

This service manual applies to products with 30100001 or subsequent serial numbers. GENERAL ... 2 SYSTEM SET-UP ... 2 OPERATING FEATURES ... 3 REALIGNMENT ... 11 CIRCUIT DESCRIPTION ... 14 SEMICONDUCTOR DATA ... 20 DESCRIPTION OF COMPONENTS ... 23 PARTS LIST ... 24 EXPLODED VIEW ... 30 PACKING ... 31 ADJUSTMENT ... 32 TERMINAL FUNCTION ... 40 PC BOARD VIEWS DISPLAY UNIT (X54-3210-XX) ... 41 TX-RX UNIT (X57-5630-XX) ... 47 SCHEMATIC DIAGRAM ... 53 BLOCK DIAGRAM ... 57 LEVEL DIAGRAM (TK-480, ... 59 LEVEL DIAGRAM (TK-481, ... 60 KNB-16A/17A (Ni-Cd BATTERY) ... 61 KPG-36 (PROGRAMMING INTERFACE CABLE) ... 61 KSC-19 (CHARGER) ... 61 SPECIFICATIONS ... 62

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