20 Aug 2024
6m super DX
FETer transceiver (2008)
This was another of my attempts to get something for nothing!
It worked remarkably well, but I struggled with netting the RX onto the TX frequency so I was afraid of clobbering someone else. It was an adaption of a circuit for 40m by W2UW but made even simpler. It appeared in SPRAT some years ago.
Some have duplicated it and achieved some remarkable DX.
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/80m-feter-transceiver .
Crickey - 2008! I must be old HI 😀
19 Aug 2024
Over the horizon on 481THz (optical)
Before my 2013 stroke I enjoyed experimenting at optical frequencies and was amazed that I could decode my QRSS CW well over the horizon with no clouds in the sky. Sadly, my stroke put an end to this. The circuit diagram shows the beacon I used. As you can see it is simple.
See https://sites.google.com/view/g3xbm4/home/optical-nanowaves/over-the-horizon .
The Internet
We all take instant global communications for granted.
As an example yesterday we had a (free) video call from our son who is staying with his Australian in-laws in Brisbane. The quality was excellent. It was almost as if he was in the next room.
It has not always been easy. I was surprised to read how extensive the telegraph network already was in the mid 1800s. Before that, news was very slow depending on boats, pigeons and dispatch riders. Just imagine life now without the internet. We have grown dependent on it in so many ways.
Just for chatting, we no longer need amateur radio.
Pathfinders - NOT amateur radio
I have just finished reading a book about the RAF Pathfinders. My dad was one in WW2. I had no idea how brave they were. On every mission they must have been terrified. No wonder my dad did not want to talk about his wartime that much.
My dad died in 1987. I think his wartime experiences haunted him. Overall, he was a peace loving man who enjoyed his quiet life. What a pity he died before I really understood. RIP dad.
The book by Will Iredale is available on Amazon and I expect it may be ordered by most bookshops.
Most wars serve no good.
6m QRP FT8 (Monday)
My 2.5W FT8 has been on most of the morning.
UPDATE 1032z: So far, spotted by 14 stations mostly in England. The spots in Southern Eire and Norway could be Es.
UPDATE 1336z: Spotted by 19 stations.18 Aug 2024
Most from the least?
One of the things I like is seeing how much I can get from something not costing much.
There are plenty of designs for regenerative receivers around, but I was pleased with this one. I am sure it may be improved.
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/80m-or-40m-regen-rx .
6m QRP FT8 (Sunday)
My 6m 2.5W FT8 has been on most of the morning.
UPDATE 1117z: Spotted by 29 stations mainly in the UK and northern Europe. 13 stations spotted here.
UPDATE 1810z: 44 stations have spotted me and I have spotted 13 stations. See map for stations spotting me.
Stations spotting me
17 Aug 2024
Anglesey Abbey walk - NOT amateur radio
10m FT8 RX on the cheap
With 10m in such good shape, perhaps it is time to remind readers of my very simple receiver for 10m FT8. It works remarkably well and could be built and cased for the cost a few coffees out. It frees up "the big rig" for something else. It was in RadCom not long ago.
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/10ft8r-rx
Old age changes? - NOT amateur radio
At the moment my wife and I are lucky. As far as we know (!) , we have nothing much wrong with us. I still have a few things that are longer term after effects from my 2013 stroke, but compared with many I have been lucky I know. Most of me still works!
As we age, several of our friends have died or now have serious illnesses. My interest in sex has dropped off and the death of others no longer seems so odd. I recall a doctor once asking me (probably 10 years ago) "if it was all too much" and I retorted "no". If he asked me now I am less sure.
Although I find so much to be interested in, I get exhausted more easily and I am tired of being giddy most of the time. Life is harder than it was.
Garden yesterday - NOT amateur radio
My wife puts a tick on the kitchen calendar when we have had a decent day. So far we have had 9 ticks, which is pretty good. Our grass is just starting to turn brown and will look bad in about a week unless we have a good downpour.
The photo shows our garden yesterday.
10m QRP FT8 (Saturday)
In a few moments I shall (hopefully!) turn on my 2.5W 10m FT8.
UPDATE 1054z: Turned on about 1000z. 22 stations have spotted my QRP and I have spotted 65 stations here.
UPDATE 1127z: 31 stations have spotted me so far.today,164 stations spotted here and 52 people have spotted me.
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| Stations spotting me |
UPDATE 1822z: 101 stations have spotted my 10m QRP and 478 stations have been spotted here. See maps.
16 Aug 2024
VLF Earth Mode
Years ago I kept a blog of my exploits. I hope you can get some ideas here.
See https://sites.google.com/site/sub9khz/vlf-using-earth-mode/g3xbm-earth-mode-blog .













