Kenwood TK-780 Service Manual Supplement page 54

TK-780/H
Transmitter Section
Item Condition
1. Frequency 1) Set test mode
Select "FREQ" in tuning mode. F. counter panel
PTT : ON
2. Power 1) Maximum power
output Set test mode
Select "H POW" in tuning mode.
"L HPOW 256" : K2,HK
"H HPOW 256" : K,HK2
PTT : ON
3. High power 1) Set test mode
Select "H POW" in tuning mode.
"L HPOW"
PTT : ON
2) "L2 HPOW"
PTT : ON
3) "C HPOW"
PTT : ON
4) "H2 HPOW"
PTT : ON
5) "H HPOW"
PTT : ON
4. Low power 1) Set test mode
Select "L POW" in tuning mode.
"L LPOW"
PTT : ON
2) "L2 LPOW"
PTT : ON
3) "C LPOW"
PTT : ON
4) "H2 LPOW"
PTT : ON
5) "H LPOW"
PTT : ON
5. Power check 1) Set test mode
CH : CH1 - Sig1
CH2 - Sig1
CH3 - Sig1
PTT : ON
54
ADJUSTMENT
Measurement
Test-
Unit Terminal Unit
equipment
Power meter Rear ANT
TX-RX VR1
(A/2)
Power meter
Power meter ANT
Ammeter DC IN
Adjustment
Parts Method
Check K,HK : 160.100MHz 100Hz
K2,HK2 : 149.100MHz 100Hz
27.0W : K,K2 0.5W : K,K2
50.0W : HK,HK2 2.0W : HK,HK2
25.0W : K,K2 1.0W : K,K2
45.0W : HK,HK2 2.0W : HK,HK2
5.0W : K,K2 0.5W : K,K2
10.0W : HK,HK2 1.0W : HK,HK2
Check 25W 1W, 7A or less : K,K2
45W 2W, 12A or less
Specifications/Remarks
: HK,K2