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Title
Crystal oscillator with a 6A6 (T437E)
Crystal oscillator with the 42 tube (T436E)
Pre selector (T435E)
5 meter receiver (T434E)
Advanced regenerative receiver (T433E)
Regenerative Gainer Receiver (T432E)
Dual triode receiver (T431E)
Code practice neon oscillator (T430E)
Telegraphy practice oscillator (T429E)
Code practice oscillator (T428E)
Sawtooth oscillator (T427E)
Relaxation oscillator using a Thyratron (T426E)
Amplifier stage with the 6AL7 (T425E)
Magic eye test (T424E)
Oscillator and mixer (T423E)
6SA7 oscillator (T422E)
Pentagrid converter (T421E)
Audio detector and amplifier (T420E)
Full wave diode detector (T418E)
Detector with amplifier (T417E)
Detector diode (T416E)
Grid leak detector (T415E)
2-tube amplifier (T414E)
1V6 stage (T413E)
Low voltage stage (T412E)
Amplifier stage with the T411E (T411E)
Power stage (T409E)
Audio stage with pentode (T408E)
Pentode voltage amplifier (T407E)
Pentode RF Amplifier (T406E)

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