4m Transverter

The 28Mhz to 70Mhz transverter was sold as a complete kit by Bo, OZ2M.

More information can be found on the OZ2M website.

The 4m amplifier was designed by Geoff GI0GDP and delivers a very stable 10w output from a RD15HVF1 MOSFET. I had a few PCB's made to the dimensions of the tinplate box and I still have a couple of spare PCB's left over.

An external low pass filter is required after the amplifier.

Geoff's circuit diagram for the 10w linear amplifer.

Most of the components were sourced from the Enigma Component Shop.