Kenwood TK-868HG, Руководство по обслуживанию

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ADJUSTMENT
Measurement
Test-
equipment
Unit Terminal
Adjustment
Unit Parts Method
Specifications/Remarks Condition Item
22
TK-868HG
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 freq’ AF VTVM ACC
: 470.050MHz C Oscilloscope (EXT.SP)
: 415.050MHz C3
SSG output : –53dBm/501
µ
V
SSG MOD : 3kHz
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’ meter
: 489.950MHz C Oscilloscope
: 429.950MHz C3 AG
SSG output : –116dBm/0.35
µ
V
SSG MOD : 3kHz DVM TX-RX RSSI
AF output : 1V/4
Ω
(A/2)
2) “S . ENS” Front CH /
Adjust [***] panel
SSG freq’
: 450.050MHz C
: 400.050MHz C3
3) “S . E . N . S”
Adjust [***]
SSG freq’
: 470.050MHz C
: 415.050MHz C3
3. Squelch 3 1) Set test mode Front CH / Adjust to the
• Wide Select “SQL3” in tuning mode. panel squelch threshold
“S . QL3” point.
Adjust [***]
SSG freq’
: 450.050MHz C
: 400.050MHz C3
SSG output : –125dBm/0.12
µ
V
SSG MOD : 3kHz (Wide)
1.5kHz (Narrow)
Measurement
Test-
equipment
Unit Terminal
Adjustment
Unit Parts Method
Specifications/Remarks Condition Item
1. PLL lock 1) Set test mode DVM TX-RX CV PLL TC106 7.5V
±
0.1V
voltage CH : CH3 - Sig1 Power meter (A/2)
RX AUX : ON F. conter
TX 2) PTT : ON (Transmit) TC109 7.5V
RX 3) CH : CH2 - Sig1 Check 0.9V or more
AUX : ON
TX 4) PTT : ON (Transmit) 0.9V or more
Common Section