Remote antenna tuner

I can only use a long wire antenna stretched between two trees. It forms an inverted L with the feed point up the garden. It is fed against a network of radials and has worked well over the years covering from 600m to 6m, with an appropriate tuner.

These pages detail the building of an Arduino controlled remote antenna tuner using a circuit designed by F4GOH. It will be controlled over a pair of wires and powered through the coax by DC injectors.

Page 1 – The donor and other parts

Page 2 – Making the DC injectors to supply 12v at up to 1A through the coax. From a design by AD5X which I have used before.

Page 3 – The tuner build, updated 03 Oct 2018.