When a 50L6 output tube is used in place of a 35L6, the 50 - ohm resistor is not used. Wiring otherwise unchanged.

SPECIFICATIONS Power consumption.
35 watts (At 117 volts AC Supply) Power Output - 1.1 Watts in % Distortion Selectivity - 49 KC Broad at 1000 times Signal Intermediate Frequency...
455 KC Speaker...
5 " PM Dynamic Tuning Frequency Range..540 to 1620 KC Sensitivity (For. 05 watt output-external Antenna) 20 microvolts average

ALIGNMENT PROCEDURE

Volume Control - Maximum A11 Adjustments.

Allow Chassis and Signal Generator to
" Heat Up " for several minutes.

The equipment in column at right is required for Aligning:

Signal Generator which will provide an acourately callbrated signal at test frequencies as listed.

Output Indicating Meter; Non - Metallic Screwdriver. Dummy Antennas -. 0l mf., and 400 ohms.

ALIGNMENT NOTES A. MECHANICAL ALIGNMENT: - The following mechanical adjustments should be made before alignment: 1. Rotate shaft of tuning unit until carriage is against top stop position. 2. Space Obcillator coil slug 1-5 / 37 *
out from top of oscillator coil form 3. Space R.F. coil slug 1-29 / 64 " out from top end of R.F.coil windira. (Note: - The distance 1 and 2 should be measured from mounted end of the slug) 4. Adjust screw on trimmer of wave trap towards open position so that oondenser plates are open at least 1/32 ".

I.F. ALIGNMENT PROCEDURE 1. Feed I.F, frequenoy from the signal generator through through a 0.01 mid oon donger to the control grid of the R.F. tube. 2. No signal will be heard unless trimmer condenser under chassis is unscrewed and reduced from original setting 3. Turn volume control full on. 4. Make preliminary I.F.adjustment with signal level approximately 50 Mv.

5. Tune I.F. trimmers for maximum signal, reducing I.F. signal input to coupling loop to keep output voltage less than 0.5 V. 6. When maximum output has been secured,
adjust trimmer condenser in the I.F. trap
(under chassis) by turning clockwise to the minimum signal.
R.F. ALIGNMENT PROCEDURE 1. Volume control full on. 2. Adjust tuning unit to top stop position. 3. Feed 1620 kc signal into external loop. Hold audio output below 0.5 V. Adjust the oscillator trimmer condenser to maximum output. 4. Move slugs in by means of tuning dial so that pointer is approximately 1 " from the stop end, signal received from the external loop on a frequency of 1400 kc. Adjust lower trimmer (R.F. trimmer) to maximum output. Reduce R.F. input to keep signal output voltage below 0.5 V. 5. Rotate tuning shaft until pointer is approximately 1 " from the other and of the soale. Feed to the external loop a test signal at 700 ko. Adjust the R.F. coil slus by rotation to maximum output.
NOTE: If more than one complete turn of the slug is required to obtain maxi

Mum signal, return tuner to 1400 kc. position and repeat steps 4 and 5.
If less than one turn is required to obtain the maximum 700 kc. audio output, the R.F. alignment may be considered complete.
CAUTION: Extreme care should be taken in the 700 kc. position to make sure that the tuner. carriage is not moved by the adjusting tools or hand pressure on the slug screw. Carriage should not be held against the frame, but should be allowed to assume its normal position when adjusting the R.F. coil slug.

DRIVE CORD REPLACEMENT Turn the tuner to the fully open position. Use a new cord 50 " long and tie one end to the tension spring. Fasten the other end of the tension spring to the drive pulley. Pass cord through slot in pulley ring; add spring tension and continue one And one-half turns counterclockwise over top of pulley Then pass cord around idler pulley A, starting over top and going around clockwise. Pass cord over idler pulley B, starting over top and going around counter clockwise. Wind one full turn counterclockwise around drive mechanism. Then wind one full turn counterclockwise around drive pulley, pass through slot in pulley and tie string to tension spring. Cut off excess string.
Attach dial pointer to cord.