Kenwood TK-863G, Service Manual, Page: 40 / 56

ADJUSTMENT
Measurement
Test-
equipment
Unit Terminal
Adjustment
Unit Parts Method
Specifications/Remarks Condition Item
40
TK-863G
Receiver Section
1. Discriminator 1) Set test mode SSG Rear ANT TX-RX L5 AF output maximum.
• Wide CH : CH1 - Sig1 panel (A/2)
SSG output : –53dBm/501
µ
V AF VTVM ACC
SSG MOD : 3kHz Oscilloscope (EXT.SP)
AF : 1.4V/4
Ω
2. Sensitivity 1) Set test mode SSG Rear ANT TX-RX L13 RSSI voltage
• Wide Select “SENS” in tuning mode. panel (A/2) L22 maximum.
“S . E . N . S” AF VTVM ACC
Adjust [250] Distortion (EXT.SP)
SSG freq’ : 489.950MHz meter
SSG output : –103dBm/1.58
µ
V Oscilloscope
SSG MOD : 3kHz AG
AF output : 1V/4
Ω
DVM TX-RX RSSI
2) “S . ENS” (A/2) Front / RSSI voltage
Adjust [***] panel maximum.
SSG freq’ : 450.050MHz
3) “S . E . N . S . _ . ”
Adjust [***]
SSG freq’ : 470.050MHz
3. Squelch 3 1) Set test mode SSG Rear ANT Front / Adjust to the
• Wide Select “SQL3” in tuning mode. panel panel squelch threshold
“S . QL3” AF VTVM ACC point.
Adjust [***] Distortion (EXT.SP)
SSG freq’ : 450.050MHz meter
SSG output : –124dBm/0.14
µ
V Oscilloscope
SSG MOD : 3kHz (Wide) AG
1.5kHz (Narrow)
2) “S . Q . L . 3”
Adjust [***]
SSG freq’ : 470.050MHz
3) “S . Q . L . 3 . _ . ”
Adjust [***]
SSG freq’ : 489.950MHz
• Narrow 4) “SQL3*** . ”
Adjust [***]
SSG freq’ : 470.050MHz
Measurement
Test-
equipment
Unit Terminal
Adjustment
Unit Parts Method
Specifications/Remarks Condition Item
Common Section
1. PLL RX 1) Set test mode DVM TX-RX CV PLL TC106 6.0V
±
0.1V
lock CH : CH3 - Sig1 Power meter (A/2)
voltage F. conter
TX 2) PTT : ON (Transmit) TC109 6.5V
RX 3) CH : CH2 - Sig1 Check 0.9V or more
AUX : ON (talk-around mode)
TX 4) PTT : ON (Transmit) 0.9V or more