Galaxy
DX Radios DX22B
Documentation Project
CBTricks.com
PLL Alignment
PLL
Alignment Locations
SETTINGS | CONNECTION |
|
ADJUST FOR |
VOLTAGE REGULATOR:
(EPTOSSB62A) |
Connect Voltmeter positive lead to power switch. Connect Voltmeter negitive lead to PCB ground. |
|
Adjust for 13.8VDC |
VCO & OSC: Frequency: 28.0000 MHz MIC Gain: Fully counter-clockwise RF Power. Fully clockwise RF Gain: Fully clockwise Clarifier: 12 o'clock Vol : Comfortable level Squelch: Fully counter-clockwise Mode selector - AM |
Disconnect shorting board from test points TP1, TP2 and TP3
Connect Freq. Counter to L61 |
VC1 |
Adjust for reading
of |
Connect Oscilloscope to L61 |
|
Adjust for Max. | |
Connect a Freq. Counter to L65 |
|
Adjust for 17.305MHz ±10Hz. | |
Connect a Freq. Counter to L65 |
|
Key
Transmitter and adjust for 17.305MHz ±10Hz. |
|
Connect Voltmeter to IC7 Pin3 |
|
Adjust
for 1.2VDC ±.1VDC. |
|
Connect Voltmeter to J13 |
|
Adjust
for 2.0VDC ±.1VDC. |
|
Connect Oscilloscope to L65 |
|
Adjust for Max. | |
Connect
Freq. Counter to IC13 pin8 |
|
Very
carefully adjust for 11.350MHz ±10Hz. |
|
Connect
Oscilloscope to IC17 pin13 |
L25 |
Very carefully adjust and for best waveform | |
AM TX OSC:
Same as above |
Connect a frequency counter to cathode of D45 |
|
Key
transmitter and adjust for 10.6950 MHz ±10Hz. |
USB
TX OSC: Adjust VR7 fully clockwise. Put mode selector on USB. |
Leave frequency counter connected to D45 |
|
Key
transmitter and adjust for 10.6925 MHz ±10Hz. |
LSB
TX OSC: Put mode selector in LSB. After adjustment return VR7 to approximate middle of rotation Replace shorting board to test points TP1, TP2 and TP3 |
Leave frequency counter connected to D45 |
|
Key
transmitter and adjust for 10.6975 MHz ±10Hz. |
Disclaimer: Although the greatest care has been taken while compiling these documents,
we cannot guarantee that the instructions will work on every radio presented.