Roger G3XBM's (Mainly) Amateur Radio Blog

630m ATU After the success last evening I am again on 474.2kHz WSPR RX with my ad hoc antenna and ground.  UPDATE 2203z :   Already spottin...

  This photo was many years ago testing my 472 kHz transverter that later featured in QST.  With my earth- electrode "antenna" in ...

 Looking back I came across this photo from 2014 showing my loading coil for use at 472kHz.

This photo from many years ago shows me breadboarding my 472kHz transverter. UPDATE 0812z:  In the early autumn, I shall try again on 472kHz...

My very old transverter used a 28.060 MHz local oscillator. I obviously went to 3.2 MHz in my newer design to reduce start-up drift.  My ant...

Sunday evening 6 stations were spotted as the chart shows. I must get back on TX soon! Thinking about my transverter, I guess the first thin...

Once again I was on 472 kHz WSPR RX last evening using the coax to my 2m big-wheel via a ferrite rod ATU as the antenna. 5 unique stations s...

 This evening I am on 630m (472kHz) WSPR RX. So far, at 2125z, 2 unique stations spotted.

This winter I have been on 472kHz less often and only RX.  With my homebrew transverter (measured ERP 10mW) it was regularly copied in Norwa...

 Last evening and overnight I was on 472kHz WSPR RX using the coax to my 2m big-wheel via an ATU. 8 unique stations were spotted with the fu...

In all, 12 unique stations were spotted. Furthermost was OH1LSQ (1733km). 

As my transverter is broken on TX, I am on 472kHz WSPR RX with the coax to the 144MHz big-wheel tuned via the ferrite rod ATU for a change. ...

When running a long wire (actually a short wire, HI) on 472kHz TX with my 12W output transverter, I used a simple ferrite rod ATU on the sha...

My Wellgood loop is tiny and no attempt has yet been made to optimise the size, position or orientation of the loop, which is just attached ...

As an experiment I am on 472kHz WSPR RX using the Wellgood Loop. It will be interesting to see how this compares with the coax up to the big...

18 stations spotted, which is the best yet this season. Furthermost was again OH1LSQ (1733km). Antenna is still the coax to my 2m big-wheel...

After dark, I switched to 472kHz WSPR RX using the coax up to my 2m big-wheel antenna via a ferrite rod ATU and mains earth. It is now 1841z...

Once it got dark yesterday evening I QSYed to 472kHz WSPR RX using the coax to my 2m big-wheel via a ferrite rod ATU. In all 16 stations wer...

Using the coax up to my 2m big-wheel antenna via a ferrite rod ATU and the mains earth, I am monitoring 472kHz WSPR this evening. So far,  5...

Last evening, I was on 472kHz WSPR RX. In all, 17 stations were spotted. I was using the coax to my 2m big-wheel as the antenna with a mains...