Kenwood TM-V7A Service Manual

TM-V7A/E
20
SEMICONDUCTOR DATA
Pin Pin code vO Function Active
No. level
55 P_KEY4 { MHz KEY L
56 P_KEY5 | F KEY L
57 P_KEY6 I TONE KEY L
58 P_KEY7 I REV KEY L
59 P_KEY8 | LOW KEY L
60 RESET I Reset input
61 P_ENCCK l Encoder clock (encoder A signal)
62 P_INT1- I Connected to P_S!
63 P_PWR I Power switch
64 P_ENCDT | Encoder data (encoder B signal)
65 P_BCHK ! Power voltage check
66 POS/INTPS { Connected to Vss
67 POG/INTPS I
68 Vpp Microprocessor power
69 X2 Clock osciliator connection (4.19M)
70 x1
71 IC (Vpp)
72 XxT2
73_| XT1/P07
74 AVpb A/D converter analog power
75 AVREF A/D converter reference voltage
76 P_SQLU | 430MHz band squelch input
77 P_VOLU I 430MHz band volume input
78 P_SQLV | 144MHz band squeltch input
79 P_VOLV | 144MHz band volume input
80 P14/AN14 I Connected to Vss
78PO58GCJRHC: K TX-RX (CONT):1C508
JRJC:E,M
Pin Pin code Vo Function Active
No. level
1 P_SCU I Squeich input (UHF)
2 P_DWAN I MIC DOWN, MR, PF
3 P_UPAN I MIC UP, CALL, VFO
4 AVss A/D converter reference ground
5 P_TONE Oo Sub-tone output
6 P_DTMF ie) DTMEF output
7 AVREF1
8 P_RXD | TNC RXD/P_PKS
9 P_TXD 8) TNC TXD/P_SQ
10 P_PTT I MIC PTT L
11 P_EPV (0) PLL enable (VHF)
12 P_CKV oO PLL, shift register clock (VHF)
13. P_DTV ie} PLL data (VHF)
14 P_ULKU I PLL unlock detection (UHF)
15 P_ULKVU I PLL unlock detection (VHF)
16 P_SI | Panel microprocessor SO
17 P_SO ie) Panel microprocessor SI
18 P27/SCKO 2) Not used (Open)
19 P_ESM ie) External speaker mute H
20 P_ISM. oO Internal speaker mute H
21 P_EPU 8) PLL enable (UHF)
22 P_CKU ie) PLL, shift register clock (UHF)
23 P_DTU oO PLL data (UHF)
24 P_ESU ie) Shift register clock (UHF)

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"