Kenwood TM-V7A Service Manual

TM-V7A/E
TERMINAL FUNCTION
TX-RX UNIT (X57-52XX-XX: A/3)
CN No. Pin No. Name : Function
CN1 1 Not used
2 Not used
3 E GND
4 E GND
5 APC APC reference voltage input
6 ULV VHF band unlock detection output
7 ULU : UHF band unlock detection output
8 DTPV VHF PLL data input
9 CKV VHF PLL, shift register (1C20) clock input
10 EPV VHF PLL enable input
11 E GND
12 MOU UHF modulation input
13 MOV VHF modulation input
14 E GND
15 E GND
16 AOI Internal speaker audio signal input
17 AOO External speaker audio signal input
18 E GND
19 RAU UHF band audio output
20 RAV VHF band audio output
CN2 1 E GND
2 PB Panel power output
3 B 13.8V
4 PSW Power switch control input
5 PE Panel graound
6 8C 8V common
7 RDU UHF band demodulated audio output
8 RDV VHF band demodulated audio output
9 E . GND
10 SQU UHF band squelch voltage output
11 SQV VHF band squelch voltage output
12 SMV VHF band S meter voltage output
13 SMU UHF band S meter voltage output
14 Not used
15 DTSV Shift register (1\C20) data input
16 DTSU Shift register (1C19) data input
17 DTPU UHF band PLL data input
18 CKU Shift register (IC19) clock input
19 EPU UHF band PLL enable input
20 E GND
CN3 1 Speaker output
2 GND
CN4 1 FAN FAN SB output
2 GND
26

Kenwood TM-V7A Specifications

General Specifications

VHF frequency range	144~148MHz
UHF frequency range	438~450MHz (U.S.A/Canada)
Antenna impedance	50Ω
Usable temperature range	-20°C to +60°C (-4°F to +140°F)
Power supply	13.8V DC ±15% (11.7~15.8V)
Grounding method	Negative-ground
Frequency stability	±3ppm (-10°C to +50°C)
Dimensions (W x H x D)	140 x 54.5 x 205.5 mm

Transmitter Specifications

High power output	50W (VHF) / 35W (UHF)
Mid power output	Approx. 10W
Low power output	Approx. 5W
Spurious emissions	-60dB or less
Maximum frequency deviation	±5kHz
Audio distortion	3% or less (at 60% modulation)
Microphone impedance	600Ω

Receiver Specifications

Circuitry	Double conversion
Intermediate frequency (1st / 2nd)	38.85MHz / 450kHz and 45.05MHz / 455kHz
Sensitivity (VHF or UHF band)	0.16μV or less (12dB SINAD)
Sensitivity (Sub VHF or UHF band)	0.25μV or less
Selectivity (-6dB)	12kHz or more
Selectivity (-60dB)	28kHz or less
Squelch sensitivity	0.1μV or less
Audio output	2W or higher (8 ohms, 5% distortion)
Audio output impedance	8Ω

Weight and Dimensions

Weight	1.2 kg (2.6 lb)
Dimensions (W x H x D)	5.51" x 2.15" x 8.09"