Roger G3XBM's (Mainly) Amateur Radio Blog

An old work colleague Richard G4KPX has been doing more experiments with indoor loop antennas. Recently he has been using an indoor loop f...

This evening I set off to my Landwade location where I hoped to check the non line-of-sight (NLOS) signal level from my 481THz, red LED, QRS...

Today I started some tests at 8.97kHz with my mag-mounted E-field probe (EFP) on the car roof. As usual, the transmitter was my 5W QRSS3 bea...

This is a question I keep asking myself. It clearly means different things to different people, but I am saddened by the trend to cheque boo...

The 472kHz WSPR beacon has been running this evening using the 20m spaced earth electrode antenna described in my March 2013 RadCom article....

481THz RX on tripod with optics. In the daylight today I went to the RX site used in last night's unsuccessful over-the-horizon (NLO...

Just as an experiment, this afternoon I modified my mag-mounted FET drain tuned E-field probe to work on 8.97kHz. The last time I rigged an ...

If, like me, you owned an Eddystone communications receiver at some point in the past then you may like to look at the Eddystone User Grou...

Weather this evening was not suitable for the tests, although I did try. I set up the QRSS3 beacon pointing out of my bedroom window using t...

This evening I am doing my first "over-the-horizon" optical test this year. The main aim is to check performance with the new rece...