Common Section Adjustments; Receiver Section Adjustments - Kenwood TK-760HG Service Manual

Common Section
Item Condition
1. PLL lock 1) Set test mode
voltage CH : CH3 - Sig1
RX
TX 2) PTT : ON (Transmit)
RX 3) CH : CH2 - Sig1
AUX : ON (talk-around mode)
TX 4) PTT : ON (Transmit)
Receiver Section
Item Condition
1. Discriminator 1) Set test mode
• Wide CH : CH1 - Sig1
SSG freq'
: 161.050MHz K
: 149.050MHz K2
: 160.050MHz M
SSG output : –53dBm/501µV
SSG MOD : 3kHz
AF : 1.4V/4Ω
2. Sensitivity 1) Set test mode
• Wide Select "SENS" in tuning mode.
"S.E.N.S"
Adjust [120]
SSG freq'
: 161.050MHz K
: 149.050MHz K2
: 160.050MHz M
SSG output : –118dBm/0.28µV DVM
SSG MOD : 3kHz
AF output : 1V/4Ω
2) "S.ENS"
Adjust [ *** ]
SSG freq'
: 148.050MHz K
: 136.050MHz K2
: 146.050MHz M
3) "S.E.N.S._."
Adjust [ *** ]
SSG freq'
: 173.950MHz K,M
: 161.950MHz K2
3. Squelch 3 1) Set test mode
• Wide Select "SQL3" in tuning mode.
"S.QL3"
Adjust [ *** ]
SSG freq'
: 148.050MHz K
: 136.050MHz K2
: 146.050MHz M
SSG output : –127dBm/0.1µV
SSG MOD : 3kHz (Wide)
2) "S.Q.L.3"
Adjust [ *** ]
SSG freq'
: 161.050MHz K
: 149.050MHz K2
: 160.050MHz M
ADJUSTMENT
Since the TK-762HG cannot be tuned from the panel, the FPU (KPG-56D) should be used for adjustment.
Measurement
Test-
equipment
DVM TX-RX CV
Power meter (A/2)
F. conter
Measurement
Test-
equipment
SSG Rear
panel
AF VTVM
Oscilloscope
SSG Rear
panel
AF VTVM
Distortion
meter
Oscilloscope
AG
TX-RX RSSI
(A/2)
1.5kHz (Narrow)
TK-760HG/762HG
Adjustment
Unit Terminal Unit Parts
PLL TC106 7.5V
TC109 7.5V
Adjustment
Unit Terminal Unit Parts
ANT TX-RX L5
(A/2)
ACC
(EXT.SP)
ANT TX-RX L11
(A/2) L13
ACC L15
(EXT.SP) L18
Front CH /
panel
Specifications/Remarks
Method
± 0.1V
Check 1.0V or more
0.5V or more
Specifications/Remarks
Method
AF output maximum.
RSSI voltage
maximum.
.
Adjust to the
squelch threshold
point.
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