LINCOLN allineamento

Da **Piero-Admin** Sab Feb 07, 2015 12:26 pm

President Lincoln CB-Radio
ALIGNMENT PROCEDURE
RECEIVER PORTION

Test equipment required:

Power Supply: 13,8 V Dummy Load 8 ohm AF VTVM Oscilloscope
HF SSG: 28.000 MHz 1 kHz 30% Mod.

Preparation alignment:

NB SW Off
PA SW Off
Beep SW Off
VOLUME Max.
RIT Middle position
Mode AM
Squelch Min.
DX/LOC DX
Frequency 28.000 MHz

Step Condition Adjustment Procedure
1 AM
SSG 40dB
1 kHz Mod. L101 L104 L113 L115 L105 Alignment of sensitivity. Adjust coils for maximum reading on the AF VTVM.
2 AM
SSG 66dB
1 kHz Mod. VR102 Alignment of Squelch. Set Squelsch to maximum. Adjust VR102 so that the squelch just breaks.
3 AM
SSG 46dB
No Mod. VR101 Alignment of S-meter. Adjust VR101 so that "9" LCD just lights on.
4 FM
SSG 1 mV
1.5 kHz Dev. L401 Adjust L401 for maximum reading on the AF VTVM.
5 AM
SSG 1 mV
Noise Gen. L203 Adjust L203 for maximum reading on the AF VTVM. Noise Generator output: 50 Hz SQ wave 2 V P-P.