Kenwood TM-731A Service Manual page 54

TM-731A/E
Common Section Adjustments
ADJUSTMENT
Measurement 7 Adjustment
item Condition Test Specification/Remarks
equip-
ment Unit |Terminal) Unit Part Method
4. Setting DC 13.8V
POWER OFF
MAIN SQL. MIN,
BALANCE CENTER
SUB SQL. MAX.
LOCK OFF
* Standard modulation (MOD.
1 kHz, DEV. *+3kHz) when
modulation of SSG is not specified.
2. Reset Turn POWER ON while pressing F key MAIN 433.000 (M,W)
440,000 (K,P)
SUB 144.000
DUAL PUSH
PLL Adjustments
Measurement Adjustment
Item Condition Test Specification/Remarks
equip- /
ment Unit {Terminal} Unit Part Method
1. VCO vaitage | FREQ. 435.000 MHz (T), Digital | TX-RX TP3 TX-RX 2.5~4.5 (W) receive
: 445.000 MHz (K,M,P} (for both trans- | voltmeter! (430) (430) 3.0~5.0 (K,M,P)
mission and reception) Oummy 5.0~7.0 (W) .
t
_— a eee eee "| Toad K 2°° — BOBO (KEP ANE
FREQ. 144.975 MHz (T), TX-RX |L10 righti 1.7~2.4 V {receive}
446.000 MHz (K,M,P) (for both trans- (144) side 3.2~3.8 V (transmit)
mission and reception) Pattern
144 MHz Receiver Adjustments
: Measurement Adjustment
ttem Condition Test Specification/Remarks
equip-
ment Unit |Terminal) Unit Part Method
4. Receiving FREQ. 145,050 MHz (W) Tester | TX-RX | TP1 TX-RX | L2,3,4 | MAX.
sensitivity 146.040 MHz (K.M,P) (144) (144) |5,6,7,8
SSG 0 dBy .
MOD : OFF
2. Discrimi- FREQ. 145.050 MHz (W) Oscillo- | Rear | ANT2 | TX-RX Lo AF indication max, Maximum sensitivity: 4 V or
nator 146.040 MHz (K,M.P)} scape, (144) more. —
SSG 0 dBy Millivolt-
meter
Dummy
load
(8 ohms)
3. Squelch FREQ. 145.050 MHz (W) Oscillo- | ANT2 | TX-RX | VR1 Set to the position where
(Tight squelch) 146.040 MHz (K,M,P} scope, (144) noise is not heard,
MAIN SQL. MAX. : Millivott-
SSG -6 dBz meter
SSG -4 dB "my Squeich should be opened.
Oat
SSG OFF (8 ohms} 8:00~ 9:30
Rotate SGL to the position where
noise is not heard.
SSG -15 dBp d Squeich should be opened.
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