5 tubes QRP SSB Transceiver for 20m ham band

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 - schematic

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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