This receiver was found in a Popular Electronics from the 90's. Its different configuration shows a tuning circuit after the tube that works as an aperiodic amplifier. Observe supply voltages.
March 2017 - The new ERB-RD, ERB-RE and ERB-RG fuses from Panasonic's Micro Chip Fuses can now be...
Using a 106 series SCR, this circuit was found in the May 1971 Radio Electronics magazine. The...
This circuit is from an 80's documentation, making use of PUTs that are not currently common...