Voltage shown on the circuit diagram are from socket terminals to chassis base. Lo measuring voltages use a voltnoter having a resistance of at least 1000 ohms per volt. Allowances should be made for variations in Ine voltage.

POWER SUPPLY. This receiver is designed to operate on any alternating current supply (AC) ranging from 110 to 120 volts, 50 to 60 cycles; or on any direct current supply (DC) ranging from 110 to 120 volts.

LAMP USED. Show case reflector lamp 120 volt, 25 watts with medium screw base with spring contact. (Never use a lamp larger than 25 watts.)

ALIGNMENT PROCEDURE

GENERAL DATA. The alignment of this receiver requires the use of a test oscillator that will cover the frequencies of 456, 600,1400 and 1720 KC and an output meter to be connected acron the primary or secondary of the output transformer. If possible, all alignments should be made with the volume control on maximum and the test oscillator output as low as possible to prevent the AVC from operating and giving false readings.

CORRECT ALIGNMENT PROCEDURE. The intermediate from quency (I.F.) stages should be aligned properly as the first step. After the I.F. transformers have been properly adjusted and peaked, the broadcast band should be adjusted.

I. F. ALIGNMENT. With the gang condenser set at minimum, ad just the test oscillator to 456 KC and connect the output to the grid of the first detector tube (12A8GT) through a. 05 or. 1 mld. condenser. The ground on the test oscillator should be connected to the chassis ground. Align all three I.F. trimmers to peak or maximum reading on the output meter.

BROADCAST BAND ALIGNMENT. Remove chassis from cabinet and set it up on the bench. Care should be taken to have no iron or other metal near the loop. Do not make this set-up on a metal bench. Connect the test oscillator to the antenna of the set through a 200 mmd. (. 0002) condenser. With the gang condenser det at minimum capacity, set the test oscillator at 1720 KC, and adjust the oscillator (or 1720 KC trimmer) on gang condenser, Next bet the test oscillator at 1400 KC, and tune in the signal on the gang condenser. Adjust the antenna trimmer (or 1400 KC trimmer) for maximum signal. Next set the test oscillator at 600 KC, and tune in signal on condenser to check alignment of coils.