Roger G3XBM's (Mainly) Amateur Radio Blog

See this email: Hi All! New band 630m in Poland, the official regulation: http://download.pzk.org.pl/ public/KTPC/Dz.U.03.02.2014_ ...

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

In an email,  John G4BAO tells me he has built an SMA version of my 472kHz transverter. At present, he is getting 5W RF out using standard ...

With several repeatable ground wave reports on 472kHz WSPR using the earth-electrode antenna, it is time for a recalculation of my ERP based...

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...

Icelandic radio amateurs have been granted access to 472-479 kHz and temporary permits for 1850-1900kHz, 5.260-5.410 MHz 70.000-70.200 MHz h...

With nearly 2 weeks of operation on the new band with very low EIRP levels (varying from typically 5-10mW with 100mW on just one occasion) p...

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...

Overnight I was using a 9m high top loaded Marconi antenna on TX and RX WSPR on 472kHz. I have since taken this down so it doesn't inter...

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...

Reports in just one 2 minute WSPR time slot with 100mW ERP on 472kHz With the improved performance from a 9m long Marconi antenna on 472...

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

After less than a week on the 472kHz band, I see that my tiny QRP signal has now been copied by 50 unique reporters in 8 countries so far wi...

This afternoon I had my first digital 2-way QSO on the new 472kHz band using JT9-1 mode created by K1JT. The contact was with G3ZJO in IO92...

Although my local noise level is a little lower on 472kHz than on 500kHz it is still not low, so working stations with the current TX antenn...

Today I did my first proper transmissions on 472-479kHz, although I did operate for a few hours before Christmas when there was some confusi...

When the grandchildren and family have all gone home next week, my first project will be to improve the RX antenna system for 472-479kHz rec...

It is now clear that the issue of my NoV for today's date was an error, either with OFCOM or the RSGB and that there was, sadly, no inte...

Today I received my 472-479kHz NoV via the RSGB website. The NoV for 5W eirp (about 20dB more than I can run!) seems to indicate that the...

The RSGB now has a link on its website (although at this time it does not appear to be working, but it did earlier for some) for the form to...