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Title
Power supply for tuves (T834E)
Telegraphy Practice Oscillator (T510E)
6W CW Transmitter for 40 Meter band (T474E)
Photoelectric alarm (T434E)
Hit the combination (T443E)
Transition from tube rectifier to semiconductor (T1120E)
Portable radio (T990E)
Small Amplifier (T963E)
Preamplifier (T918E)
Phonograph Amplifier (T891E)
Small Power Supply (T913E)
Amplified Crystal Radio (T868E)
Portable Phonograph Oscillator (T844E)
Egg Fertility Test (T807E)
1941 radio RF and IF step (T753E)
Portable Power Supply (T738E)
Amplifier using the 2A5 (T749E)
6SQ7 and 6V6 Amplifier (T721E)
10W Amplifier (T698E)
Experimental tube multivibrator (T666E)
Intercom (T454E)
Electronic lock (T450E)
Arvin Model 444 (T1083E)
Regenerative Receiver (T1011E)
Single Transmitter (T986E)
2-tube Receiver (T943E)
Aircraft Detector (T795E)
Portable 4-tube Receiver (T724E)
Regenerative receiver (T732E)
1943 walk talkie (T707E)

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