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Title
Simple 1-tube receiver (T960E)
1-tube super heterodyne (T915E)
Home Transmitter (T910E)
Different amplifier (T841E)
Mixer (T732E)
25Z5 Power Supply (T696E)
Electronic Babysitter (T507E)
AC-DC power source (T1131E)
AC-DC Amplifier (T1099E)
Voltmeter (T1058E)
Tube twin-T (T1008E)
Audio Oscillator (T983E)
Power grid Communicator Transmitters (T940E)
3-tube receiver (T866E)
Single 2 tube radio (T791E)
Photoelectric relay (T772E)
General Electric H 639 (T719E)
Stewart Warner radio using dual tubes - 1939 (T685E)
Basic Regenerative Receiver (T471E)
Burglar Alarm (T1080E)
Braille Ohmmeter (T1015E)
Dielectric heater (T1036E)
Reflex Receiver (T972E)
Receiver with 56 tube (T889E)
Super heterodyne for beginners (T842E)
Code Practice Oscillator (T832E)
Miniature Transmitter (T751E)
Playback Amplifier (T747E)
Metal Locator (T696E)
Frequency meter (T1132E)

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