Roger G3XBM's (Mainly) Amateur Radio Blog

A fair proportion of people say they can hear a very low frequency audio hum. I can hear it. I have heard it from very early morning (about ...

There is something strange about my Polyakov mixer based direct conversion receiver for 28.1246MHz WSPR at the moment. On the bench, when ...

Last night I wrote to Yaesu UK about the FT-450D hum issue and got a very fast and very helpful, response from Paul Bigwood their Techni...

From what I see and hear, Yaesu is still selling this otherwise excellent HF/6m transceiver with a fundamental design flaw: hum created by ...

Although usually/mostly a QRP operator, I've been considering an update to my main station transceiver since selling my 10W IC703 to a...