President George CB-Radio

ALIGNMENT PROCEDURE

PLL CARIER OSCILLATOR PORTION

Test equipment required:


Power Supply: 13,2 V	DC Volt Meter	Oscilloscope	Frequency Counter

Preparation alignment:


Clarifier	Center
RF Power	Clockwise
VR205 and VR206	Center
Remove	PB 201

Step	Condition	Adjustment	Procedure
1	RX AM 27.405 MHz	L405	Connect the DC Voltmeter to TP2 Adjust for 2.5 +/- 0.1 V
2	RX AM 26.965 MHz		Same as Step 1 More than 2.0 V
3	TX AM 27.205 MHz	L401	Connect oscilloscope to TP1 Adjust for 37.900 MHz +/- 20 Hz
4	RX AM 27.205 MHz	Check	Same as Step 3 37.900 MHz +/- 20 Hz
5	TX FM 27.205 MHz	Check	Same as Step 3 37.900 MHz +/- 20 Hz Reading
6	RX FM 27.205 MHz	Check	Same as Step 3 37.900 MHz +/- 20 Hz Reading
7	TX USB 27.205 MHz	VR211	Connect oscilloscope to TP1 Adjust for 37.9025 MHz +/- 20 Hz
8	RX USB 27.205 MHz	Check	Same as Step 3 37.9025 MHz +/- 20 Hz
9	TX LSB 27.205 MHz	L402	Connect oscilloscope to TP1 Adjust for 37.8975 MHz +/- 20 Hz
10	RX LSB 27.205 MHz	Check	Same as Step 3 37.8975 MHz +/- 20 Hz
11	TX AM 27.205 MHz	L406	Connect oscilloscope to TP 3 Adjust for10.695 MHz +/- 20 Hz
12	TX FM 27.205 MHz	Check	Same as Step 11 10.695 MHz +/- 20 Hz Reading
13	TX USB 27.205 MHz	L408	Connect oscilloscope to TP 3 Adjust for10.6975 MHz +/- 20 Hz
14	RX USB 27.205 MHz	Check	Same as Step 13 10.6975 MHz +/- 20 Hz Reading
15	TX LSB 27.205 MHz	L402	Connect oscilloscope to TP 3 Adjust for10.6925 MHz +/- 20 Hz
16	RX LSB 27.205 MHz	Check	Same as Step 15 10.6925 MHz +/- 20 Hz Reading
17	RX FM 28.755 MHz	Check	Same as Step 1 Less than 4.2 V
18	RX USB 26.065 MHz	Check	Same as Step 1 More than 1.2 V

Oscillator-frequency at 27.205MHz

VFO OSC- TP1	Adjust	X-tal OSC - TP3	Adjust	Mod.
37.9000MHz	L401	10.6950MHz		RX - AM
37.9000MHz		10.6950MHz		RX - FM
37.9025MHz		10.6975MHz	L408	RX - USB
37.8975MHz	L402	10.6925MHz	L407	RX - LSB
37.9000MHz		10.6950MHz	L406	TX - AM
37.9000MHz		10.6950MHz		TX - FM
37.9025MHz	VR211	10.6975MHz		TX - USB
37.8975MHz		10.6925MHz		TX - LSB