(3) First and Second IF Adjustment
 
Set the MODE switch to the LSB/CW the ATT switch to the DX position, and rotate the ATT control fully counterclockwise. Connect a signal generator to the antenna jack, J1, and set its frequency to 8.01 MHz. Tune the receiver to 8.01 MHz, set the signal generator output to a level sufficient to obtain deflection of the S meter, and adjust T1004 - T1008 and T1011 - T1014 for a maximum S-meter reading.
 
(4) S Meter Sensitivity and Full Scale Adjustment
 
a. Preset the controls, switches, and dial frequency as in step 3. Set the signal generator output level to 8 dB (ref: 0 dB = 1mV). Adjust VR1002 so that the S meter just begins to move off the left hand peg on its scale.
 
b. Set the signal generator output level to 90 dB. Adjust VR1004 for a full scale reading on the S meter.
 
(5) NB Adjustment
 
a. Connect a VTVM to the source of Q1037 and a signal generator to antenna jack J1. Set the signal generator output level to 20 dB, output frequency to 8.01 MHz, and adjust T1015 - T1017 for a minimum reading on the VTVM.
 
b. Connect a noise generator to antenna jack J1, and press the NB switch. Adjust VR1001 for a minimum noise level from the speaker.
 
(6) Trap Adjustment
 
Connect a signal generator to antenna jack J1, and set its frequency to the first IF frequency, 48.055 MHz. Set the signal generator output level to a level sufficient to obtain deflection on the S meter, then T1002 for a minimum reading on the S meter.


BOTTOM VIEW