Home

President Grant CB-Radio

ALIGNMENT PROCEDURE

PLL and CARRIER OSCILLATOR PORTION


Test equipment required:
Power Supply: 13,8 VFrequency CounterDummy Load 50 ohmOscilloscope
DC VTVM

Preparation alignment:
ClarifierMid.
SQ GAINMax.
AF GAINMax.
RF GAINMax.
MIC GAINMax.
MOD, S/RFS/RF
NB/ANLOff
RF SSGModulation: 30% AM 1000Hz
StepConditionAdjustmentProcedure
1MODE: RX AM
Ch. 19 MID.		L17Connect osciloscope on TP4. Adjust for maximum reading.
2MODE: RX AM
Ch. 40 MID.		L18Connect DC Voltmeter on TP2. Adjust to obtain 5,5Volt.
3MODE: RX AM
Ch. 19 MID.		L19Connect oscilloscope on TP3. Adjust for maximum reading.
4MODE: RX AM
Ch. 19 MID.		L25Connect Frequency Counter on TP3. Adjust to obtain 16.490MHz +/- 20Hz.
5MODE: RX USB
Ch. 19 MID.		L26Connect Frequency Counter on TP3. Adjust to obtain 16.4925MHz +/- 20Hz.
6MODE: RX LSB
Ch. 19 MID.		L27Connect Frequency Counter on TP3. Adjust to obtain 16.4875MHz +/- 20Hz.
7MODE: TX LSB
Ch. 19 MID.		VR6Connect Frequency Counter on TP3. Adjust to obtain 16.875MHz +/- 20Hz.
8MODE: RX AM
Ch. 19 LOW.		L22Connect Frequency Counter on TP3. Adjust to obtain 16.040MHz +/- 20Hz.
9MODE: RX USB
Ch. 19 LOW.		L23Connect Frequency Counter on TP3. Adjust to obtain 16.0425MHz +/- 20Hz.
10MODE: RX LSB
Ch. 19 LOW.		L24Connect Frequency Counter on TP3. Adjust to obtain 16.0375MHz +/- 20Hz.
11MODE: RX LSBL30Connect Frequency Counter on TP6. Adjust to obtain 10.6975MHz +/- 20Hz.
12MODE: RX USBL29Connect Frequency Counter on TP6. Adjust to obtain 10.6925MHz +/- 20Hz.
13MODE: TX AML28Connect Frequency Counter on Base from TR43. Adjust to obtain 10.6950MHz +/- 20Hz.