Kenwood TM-V7A Service Manual

SEMICONDUCTOR DATA
TM-V7A/E
Pin Pin code vo Function Active
No. level
25 P_ESV ie] Shift register data (VHF)
26 P_PSW {e) Power switch H
27 P_STP2 ie) Cross point switch latch (AF)
28 P_DTP ie) Cross point switch data
29 P_CKP ie} Cross point switch clock
30 P_STP14 oO Cross point switch latch (RD)
31 P_CKD ie) DTMF decoder clock
32 P_DTD I DTMF decoder data
33 Vss Microprocessor ground
34 P_STD { OTME decoder detection
35 P_5CSW O.. 5C SW control L
36 P_BO I Destination bit 0
37 P_Bi I Destination bit 1
38 P_B2 I Destination bit 2
39 P_B3 I Destination bit 3
40 P_SOE 1 EEPROM SO
4 P_CSE (e) EEPROM chip select
42 P_CKE ie) EEPROM clock
43 P_SIE ie] EEPROM SI
44 P_APC ie) APC control
45 P_PSEL I Packet connection check
46 P_BEEP ie) BEEP output
47 P_9600 OQ. 9600bps
48 P_1200 ie) 1200bps
49 P_DMONI fe) DTMF monitor ON/OFF
50 P_1750 ie} 1750Hz tone
51 P_RRM oO Repeater RD mute H
52 P_RPT | Repeater alteration
53 P_NAR { Audio composite IC serial input enable
54 P_RST {e) Audio composite iC reset
55 P_VCS ie} Audio composite IC chip select
56 P_DTC ie) CTCSS data/audio composite IC data
57 P_CKG VO CTCSS clock/audio composite IC clock connection check
58 P_SDO | CTCSS detection H
59 P_STC O CTCSS enable
60
RESET
I
Reset
input
H
61
P_CHD
I Channel display
jumper
62
P_BCHK
I
Power
check
H
63
P_LINTP2
{
Connected
to
P_SI
L
64
P_INTP3
I
Connected
to
P_DWAN
L
65
P_CKVR
oO
Electronic
control
colck
66 P_ENVR oO Electronic control enable
67 P_DTVR ie) Electronic control data
68 Vppb Microprocessor power
69 X2 Clock oscillator connection (4,19M)
70 x1
71 IC(VpP) Vss
72 xT2 Open
73 XT1/P07 Vss
74 AVpb A/D converter analog power
75 AVREF A/D converter reference voltage
76 P_SCV I Squetch input (VHF)
77 P_SMV | S meter input (VHF)
78 P_SMU I S metert input (UHF)
79 P_AFMUTE oO AF MUTE
80 P_TCX0O 1 TGXO voltage input
21

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"