ALAMO ELECTRONIC CORP.
MODEL 50

IF PEAK 455 KC

ALAMO ELECTRONIC CORP.
MODEL 50

SERVICE DATA

Lack of sensitivity and poor tone quality may be due to any one or a combination of causes such as weak or defective tubes or speaker, open or grounded bias resistor, bypass condenser, etc. Never attempt to realign set until all other possible sources of trouble have been thoroughly investigated and definitely proved not to be the cause.

NOTE: IT IS ABSOLUTELY NECESSARY THAT AN ACCURATELY CALIBRATED OSCILLATOR WITH SOME TYPE OF OUTPUT MEASURING DEVICE BE USED WHEN ALIGNING THE RECEIVER AND THAT THE PROCEDURE BE CAREFULLY FOLLOWED. OTHERWISE THE RECEIVER WILL BE INSENSITIVE AND THE DIAL CALIBRATION WILL BE INCORRECT.
THE TRIMMERS WILL BE REFERRED TO BY THEIR FUNCTION AS INDICATED ON THE PARTS DIAGRAM.

GENERAL DATE. The alignment of this receiver requires the use of a test oscillator that will cover the frequencies of 455, 1400,1600 KCS and an output transformer. For more accuracy a vacuum tube voltmeter should be used. If possible all alignments should be made with the volume control on maximum and the test oscillator output as low as possible.

1. Couple signal generator to loop loosely with one or two turns of wire connected to signal generator output.

2. Connect Output meter to voice coil or better connect vacuum tube volt meter to B- (AC switch) and tie lug on top of chassis connecting to loop return.

Set signal generator to 456 KC and adjust 4 trimmers in top of I.F. cans.

4. Set signal generator to 1600 KC set twing condenser to minimum capacity and adjust oscillator trimmer on condenser gang.

5. Set oscillator to 1400 KC tune in signal accurately and adjust.R.F. trimmer on condo iser gang.

ALL RESISTORS 1/2 WATT AND ALL CONDENSERS 400 VOLT UNLESS OTHERWISE MARKED