Motorboating free amplifier (T356E)

This circuit is from a 1937 RCA manual. The tubes are of well-known types and the power supply is not supplied.

VHF TV Signal Generator (CB511)
This circuit produces a signal in the range corresponding the the VHH channels between 2 and 6....
Sensitive VHF Wavemeter (CB4119E)
This circuit is more sensitive than the previous one (CB4118E) for using a full wave detector. The...
Optical Coupler Shield - II (CB1326E)
This shield can be used both to interface microcontroller circuits or TTTL. The resistor in series...