ON7DQ (KF0CR) HAM Radio Blog

  I have built an ATU-100 kit back in 2020, see my previous reports about the build  here and some tests I did  here . This time, I built ...

The MH3, the standard microphone for the Elecraft KX3 is rather big, and the Icom mic for the IC-705 is not much better. I was looking to re...

After a renewed discussion on the  SOTA Reflector  about using a Quansheng UV-K5 handheld for CW, I built yet another AtTiny85 keyer, by jus...

  Another Cassette Box project ... I wanted a small portable CW decoder, and since I'm a big fan of using old cassette tape boxes, it ha...

Some time ago I was handed a free Pi Pico WH processor board. To test what it could do, I made a simple webserver with it, and it worked .....