Radio

This is active loop antenna dedicated for 1-30 Mhz. It can be substitute for MiniWhip antenna…

Controller is based on Arduino-mini and the multi-turn (1k, 10 rounds) potentiometer connected to it.  There…

I have started this project in 2015.  Finally, after some modifications, I decided to publish it.…

This project has been started due to got a gift from Kamil SP5KBS (thx for that)…

This is my second own-built antenna tuner. The first one was the well known DF3OS QRP…

Dear OMs, As you know, the DVB-T Receiver 820T2 can be physically modified and be able…

Cheap antenna analyzer is a tool strong demanded especially by Ham’s beginners. Few years ago I…