ANTENTOP- 01- 2016 # 020

Simple Two Tube Direct Conversation Receiver

By: Aleksandr Viktor

Credit Line: Forum at cqham.ru

It is very simple DC receiver contains only two tubes. No one semiconductor there is here. This receiver made by me on the base of Kazuhiro Sunamura 12V- Tube receiver.

I fed it by 12-V accumulator battery. Receiver was made for the 80- meter Band. It was used a LW Antenna in 20- meter length with the receiver. Mini main transformer (12V+12Vx 220V) is used at the receiver. First (220V) winding of the transformer with capacitor C4 makes simple audio filter. Receiver works fine with high- ohmic phones. It is possible use any audio amplifier that works on external speaker with the receiver. What is amusing that the receiver does not receipt radio station with AM.

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