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5-2 PLL ADJUSTMENTS<br />
ADJUSTMENT<br />
30.2 MHz<br />
LEVEL<br />
REFERENCE<br />
FREQUENCY<br />
144M LOCK<br />
VOLTAGE<br />
440M LOCK<br />
VOLTAGE<br />
MAIN BFO<br />
LEVEL<br />
SUB BFO<br />
LEVEL<br />
1<br />
1<br />
2<br />
1<br />
2<br />
3<br />
1<br />
2<br />
3<br />
1<br />
2<br />
ADJUSTMENT CONDITION<br />
• Display frequency: Any<br />
• Receiving<br />
• Display frequency: Any<br />
• Receiving<br />
This adjustment must be performed<br />
at 5 minutes later after power ON.<br />
• Display frequency: 173.9800 MHz<br />
• Mode<br />
: USB<br />
• Receiving<br />
• Display frequency: 136.0200 MHz<br />
• Receiving<br />
• Display frequency: 155.0000 MHz<br />
• Receiving<br />
• Display frequency: 479.9800 MHz<br />
• Mode<br />
: USB<br />
• Receiving<br />
• Display frequency: 420.0200 MHz<br />
• Receiving<br />
• Display frequency: 450.0000 MHz<br />
• Receiving<br />
• Display frequency: Any<br />
• Mode<br />
:USB<br />
• Receiving<br />
• Sub display freq. : Any<br />
• Mode<br />
:USB<br />
• Receiving<br />
ADJUSTMENT<br />
MEASUREMENT<br />
VALUE<br />
POINT<br />
UNIT LOCATION UNIT ADJUST<br />
PLL<br />
PLL<br />
PLL<br />
PLL<br />
PLL<br />
PLL<br />
Connect an RF voltmeter<br />
or spectram<br />
analyzer to check<br />
point J541.<br />
Connect an RF voltmeter<br />
or spectram<br />
analyzer to check<br />
point P551.<br />
Connect a frequency<br />
counter to check<br />
point P551.<br />
Connect a digital<br />
multimeter or oscilloscope<br />
to check point<br />
CP100.<br />
Connect an RF voltmeter<br />
to check point<br />
P251.<br />
Connect a digital<br />
multimeter or oscilloscope<br />
to check point<br />
CP300.<br />
Connect an RF voltmeter<br />
to check point<br />
P421.<br />
Connect an RF voltmeter<br />
to check point<br />
P601.<br />
Connect an RF voltmeter<br />
to check point<br />
P701.<br />
–10 dBm (or more than<br />
–11.5 dBm, when R570<br />
is in maximum position.)<br />
Maximum level<br />
(–13 dBm to –7dBm)<br />
60.400000 MHz<br />
2.7 V<br />
0.6 V to 1.6 V<br />
–10 dBm to –4 dBm<br />
3.4 V<br />
0.5 V to 1.5 V<br />
–16 dBm to –10 dBm<br />
–11 dBm to –5 dBm<br />
–11 dBm to –5 dBm<br />
PLL<br />
PLL<br />
PLL<br />
PLL<br />
PLL<br />
PLL<br />
R570<br />
Adjust in<br />
sequence<br />
L551, L552<br />
several<br />
times.<br />
The trimmer<br />
capacitor of<br />
X512.<br />
L193<br />
Verify<br />
Verify<br />
C402<br />
Verify<br />
Verify<br />
Verify<br />
Verify<br />
5-3 FREQUENCY ADJUSTMENT<br />
ADJUSTMENT<br />
FM TX-LO<br />
FREQUENCY<br />
ADJUSTMENT CONDITION<br />
1 • Display frequency: Any<br />
• Mode<br />
: FM<br />
• Disconnect P501, P502 (PA unit)<br />
from J51 and J52 on the MAIN unit.<br />
• Apply no audio signals to [M<strong>IC</strong>]<br />
connector.<br />
• Transmitting<br />
ADJUSTMENT<br />
MEASUREMENT<br />
VALUE<br />
POINT<br />
UNIT LOCATION UNIT ADJUST<br />
MAIN<br />
Connect a frequency<br />
counter to check<br />
point CP51.<br />
After adjustment, connect P501, P502 (PA unit) to J51, J52 on the MAIN.<br />
10.85000 MHz MAIN L255<br />
5 - 2
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