Kenwood TM-V7A Service Manual

TM-V7A/E
TERMINAL FUNCTION
CONTROL UNIT (X57-52XX-XX: B/3)
CN No. Pin No. Name Function
CN502 1 E GND
2 PB Panel power input
3 B 13.8V
4 PSW Power switch control output
5 PE Panel ground
6 8C 8V common
7 RDU UHF band demodulated audio input
8 RDV VHF band demodulated audio input
9 E GND
10 SQU UHF band squelch voltage input
11 SQV VHF band squeich voltage input
12 SMV VHE band S meter voltage input
13 SMU UHF band S meter voltage input
14 Not used
15 DTSV Shift register (C20) data output
16 DTSU Shiit register (IC19) data output
17 DTPU UHF band PLL data output
18 CKU Shift register (IC19) clock output
19 EPU UHF band PLL enable output
20 E GND
CN503 1 Not used
2 Not used
3 E GND
4 E GND
5 APG APC regerence voltage output
6 ULV VHF band unlock detection output
7 ULU UHF band unlock detection output
8 DTPV VHF PLL data output
9 CKV VHF PLL, shitt register (IC20) clock output
10 EPV VHF PLL enable output
11 E GND
12 MOU UHF modulation output
13 MOV VHF modulation output
14 E GND
15 E GND
16 AO! Internal speaker audio output
17 AOO External speaker audio output
18 E GND
19 RAU UHF band audio input
20 RAV VHF band audio input
CN504 1 VCK VS-3 clock output
2 VDT VS-3 data output
3 VCS VS-3 chip select
4 RST VS-3 reset output
5 NAR VS-3 input enable output
6 E GND
7 5C 5V common
8 48) Audio output
CN501 1 PSI Serial data input
2 PSO Serial data output
3 PE Panel Ground
4
Panel power output
27

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"