Recently my colleague, Rob PA5RH and I came up with the idea to build an automatic loop tuner. Rob is busy with the software part where I have already started on the mechanical part. As loop, Cellflex 1 1/4 inch Coax cable is used. This has a (copper) outer diameter …
pd5dj 
ATU-1000, 1KW Automatic Antenna tuner
TUNER SOLD IN 2023 As I have succesfully built the ATU-100 kit, I decided to go for a beafier ATU kit. Some weeks ago I received a kit from Ali Express. The ATU-1000 Automatic Antenna tuner kit. It is based on the same design of N7DCC, but the board is …