Hi. Jim -KX4TD - have used a WSPR Desktop transmitter to investigate the propagation on the 40m band. His explanation on what is going...

After a long development time I have now released my latest WSPR transmitter that is intended to be flown with small balloons. There is a...

This Christmas holiday I took a break from building and designing electronics. Although I was suffering a bit from burn-out from working...

Jean-Marie Polard - F5VLB has been experimenting with so called "earth probes" to transmit RF on our amateur bands. He mentioned it to me...