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A transceiver front-end protector in high signal level environments. An homemade RF limiter to protect your receiver front-end from high radio frequency.

An homemade HF, 6m, 2m SSB CW transceiver project by m0dgq

Homemade LC Bandpass Filters for 20M, 30M, 40M In multi-station environments like special events, field day, portable operating, is very important to protect receivers from excessively strong signals. Bandpass filters help to protect your transceivers.

Adapting a common PC earphone with microphone to connect to a transceiver via a homemade pre-amplifier, using a simple chip with aprox 10 db gain. Includes a schematic diagram

Homemade portable transceiver for the 40 meters band.

A simple realization of a panadapter conntected to a custom build IF PanAdapter output added to the Yeasu FT-DX1200. The IF output has been provided by adding a G4HUP PAT board to the transceiver.