TUBE LAYOUT

This is a 6 - tube superheterodyne radio receiver, with provision for phonograph input, for operation on 105-125 volt AC or DC power supply. The tubes used are a 12SK7 as an R.F. amplifier, a 125A7 as an oscillator-converter, a 128K7 as an I.F. amplifier, a 128Q7 as an AVC, detector, and 1st audio amplifier, a 35L6 as an output, and a 3525 as a power rectifier.
The broadcast band covers a frequency range from 535 to 1620 kilocycles. The dial is calibrated in kilocycles (KC) (less the final zero).
When using D.C. power supply, and after allowing sufficient time for tubes to warm up, if the receiver does not operate, remove the line cord plug from the socket and reverse. Replace the plug in the reverse position and allow tubes to warm up, at which time the receiver will operate.
When using A.C. power supply, it will be found that there will be less hum when the line cord is in the best position. Try both positions, leaving the plug in the position that produces the least hum.
For reception of local stations no antenna is necessary, the built-in loop providing sufficient volume. If it is desired to listen to more distant stations, an antenna 50 to 100 feet long should be connected to the flexible lead protruding from the rear of the cabinet. Do not use a ground with this receiver.

CONTROLS
TONE CONTROL: (Center knob).
Turn knob counter-clockwise for maximum bags and clockwise for maximum treble response. VOLUME CONTROL: (Left-hand knob).
Turning Knob clockwise turns the receiver on and turning further increases the volume. TUNING CONTROL: (Right-hand knob).
This knob is used to select stations. Tune station until it is at maximum clearness. Never attempt to reduce the volume by detuning the station always use the volume control.
OPERATION Turn the " On - Off " switch and volume control clockwise about half its range. This supplies power to the receiver. After allowing the tubes to warm up, tune in the desired station by rotating the tuning control. For best results, tune the desired station with the volume turned low. This enables you to get the exact point where the station comes in best. Then adjust the volume control To operate the receiver as a phonograph amplifier, insert phonograph plug in jack on rear of chassis. Turn " On - Off switch and volume control clockwise about half its range and adjust tone control to desired position. For normal radio reception the phono plug must be withdrawn from the jack.
This is a 6-tube superheterodyne radio receiver, with provision for phonograph input, for operation on 105-125 volt AC or DC power supply. The tubes used are a 125K7 as an R.F. amplifier, a 12SA7 as an oscillator-converter, a 128K7 as an I.F. amplifier, a 128Q7 as an AVC, detector, and 1st audio amplifier, a 35L6 as an output, and a 3525 as a power rectifier.
The broadcast band covers a frequency range from 535 to 1620 kilocycles. The dial is calibrated in kilocycles (KC) (less the final zero).