Roger G3XBM's (Mainly) Amateur Radio Blog

Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.

4 Feb 2026

Chesterfield Islands

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I have to confess I have no idea where these islands are and the callsign does not help. In a short while I shall look them up. This is a QS...

Brunch

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Today was my University of the Third Age in Cambridge. Before it starts I have brunch.

10m 200mW WSPR (Wednesday)

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My beacon was turned pm just before breakfast. UPDATE 1630z: 72 stations have spotted me today.

QRP CW

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  Recently, there was a 50mW CW QSO on 20m using this homemade TX. I forget who designed and built this.

Fog of war

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The trouble with wars and conflicts is it impossible to tell who is telling the truth. Both sides in a conflict tend to invoke propaganda to...

Sunspots - Wednesday February 4th

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 Solar flux is 178 and the SSN 171. A=5 and K=0. 
3 Feb 2026

Public life

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If you are in public life it must be hell.  Your every move is looked at, photographed  and every little detail picked over.  Recently, with...

Free Scrapbook PDF

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This is a gentle reminder that my Project Scrapbook is available as a free  PDF download on my main website.  It is really a dump of my life...

Cambridge art gallery window

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This painting was in the window yesterday. It captures the atmosphere. 

10m 200mW WSPR TX (Tuesday)

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My beacon was turned on at 0926z. UPDATE 0940z:  2 stations spotting me (EA8 and OH) UPDATE 1040z:  Spotted by 5 stations. See map by VK7JJ...
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Roger G3XBM
Burwell, Cambridge, United Kingdom
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