5 tubes QRP SSB Transceiver for 20m ham band


Posted on Apr 28, 2012

This true SSB transceiver is built around just 5 vacuum tubes, with no transistors nor ICs. Superhet receiver with AGC and S-meter drives a loudspeaker, 5W transmitter, very stable VXO uses CB crystals to cover 20m ham band. A project for skilled RF technicians with a good set of instruments.


5 tubes QRP SSB Transceiver for 20m ham band
Click here to download the full size of the above Circuit.

The architecture of this transceiver is based upon reversible use of its blocks. The 5 tubes, diode mixers and SSB filter all operate during reception and transmission. SSB filter is homebuilt 4poles ladder filter. Performance tested at bench and on-the-a




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wik   Mar 28, 2018

Very nice! thanks

excelente"!   Mar 10, 2008

excelente diseno para quienes aun "queremos" a las valvulas electronicas!!! mis reconocimientos.

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