Kenwood TM-V7A Service Manual

TM-V7A/E
ADJUSTMENT
Measurement Adjustment Specifications/
item Condition equipment Unit | Terminal] Unit | Parts | Method Remarks
5.
BPF
1)
FREQ....CH1
SSG
TX-RX
ANT
TX-RX
L6
Voltage
2.5V
or
more
:146.050MHz:K,M DC V.M Rear panel} SMV (TP5) L1i2 max
:145.050MHz:E L17
SSG:-93dBm
Carry out the following procedures after rising up the set in the adjustment mode.
Method of rising up the adjustment mode (Mode for adjustment and level setting)
1. Turn OFF and insert the short plug into the data terminal of the set.
2. After 1 second of turning ON while depressing the CF) key and the key simultaneously, all LCDs light
on and the screen will be white.
1 SOM
3. When setting all keys to free, the right figure will be displayed on the screen.
All Reset?
Press [MR]
4. All reset is executed when key is depressed. The frequencies which are specified by frequency entering mode
will be entered and the next procedure is executed. However, when any key other than key is depressed or no
operation is activated for 10 seconds, the adjustment mode is released.
5. Key operation
CH
Frequency
;
145.040 439.940
ENT ~< > ad
1. ENT Key + + + Decide the setting value and proceed to the next step.
* During adjustment of transmission system, depress ENT key after turning OFF the transmission.
2. ENC Knob «+ + + UP/DOWN for the setting value
3. key + + + » Return to the previous step
4. dkey----- Proceed to the next step
5.p> key* ss Change the adjustment item
(Note) Adjustment mode is released when turning OFF (PWR).
6. Refer to the separate table on page 50 for the adjustment items and their contents of the set.
Alignment level
24 OF
Receiver section
Measurement Adjustment Specifications/
Item Condition equipment Unit | Terminal Unit Parts Method Remarks
1. High level input | 1) V band...CH1 Oscilloscope | Rear EXT. SP2 Check S/N 44qB or more
S/N and step 1-1 AF V.M panel Distortion rate:
distortion FREQ.:146.050MHz:K,M |SSG 5% or less
FREQ.:145.050MHz:E Distortion
SSG:—53dBm meter
AF output:2.83V/8 Q
2) U band...CH1 _ {EXT. SP4 : S/N 42dB or more
step 1-2 Distortion rate:
FREQ.:444.050MHz:K 5% or less
FREQ.:435.050MHz:M,E
SSG:—53dBm
AF output:2.83V/8 Q
46

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"