Roger G3XBM's (Mainly) Amateur Radio Blog

Well, I did my first VLF earth-mode field test today since my brain bleed in Sept 2013. Sadly, it was a total failure. I am at a loss to exp...

I left 474.2kHz WSPR running overnight using the 15m baseline earth-electrode running vaguely E-W. Results were encouraging. Don't anyon...

After trying a number of different orientations of earth-electrode pairs in my garden, I have come to the conclusion that this antenna struc...

News from Germany of an upcoming VLF test at 8.970kHz using earth electrodes as the TX antenna with an ultra-stable Spectrum Lab derived sig...

This evening I have been trying my stealth antenna (20m separated earth-electrodes, wire in the grass!) on 40m again and getting plenty of ...

This evening I have been using the 20m baseline earth-electrode antenna on 80m. From the shack (upstairs) there is a 20m coax down to the ba...

The red dots show where the wire to my far earth rod goes - under the snow! This afternoon I've installed a coax cable from my opera...

With some further tests today I am now able to arrive at some conclusions from my experiments with an earth electrode antenna at 472kHz. Man...

Today, I took my experiments with an earth electrode TX antenna for 472kHz to new levels by placing the connecting wires on the grass i.e. n...

This evening I have been noting my WSPR S/N reports from stations across the country and nearer Europe using my 9m long Marconi antenna and ...

So that I can better quantify the performance of my various earth electrode "antennas" I have today erected a 9m long top loaded M...

Following on from yesterday's tests, today I started a further test using an earth electrode "antenna" on 472kHz WSPR. This ...

With several hundred WSPR spots of my QRP signal received today on 472kHz, I have tried to do a crude analysis of the difference in performa...

Signals received on 472kHz WSPR using the earth electrode "antenna" This afternoon I've been experimenting with my 20m spa...

This afternoon I installed a more permanent earth-mode ground system to use in forthcoming tests at VLF through to 500kHz. Instead of bringi...

30t loop on the ground feeding E-field probe An 8.971kHz earth mode (VLF through the ground) test was conducted today at 1.6km and 3.5km...

Following the great success on 160m with the 20m spaced earth electrodes yesterday, I fired up the WSPR transverter into the same "ante...

160m WSPR reports - using 5W to 20m spaced earth electrodes What an amazing evening: tonight I let my 5W WSPR beacon run with my VLF ear...

Today I had to prune the tree to which my 80m sq wire loop is attached, so the loop had to come down for a while. Instead I connected up m...

My 5W QRP signal at 17.52kHz is clearly visible at 6km Last evening I continued the earth mode tests at 17.52kHz by going out to the ...