27 Jun 2025

VLF earth-mode beacon

 

Some years ago I really enjoyed experimenting with earth-mode VLF at 5W. I built a beacon TX and went out in the Fens trying to receive it. My best DX was about 6km, although I remain convinced much further would have been possible with more power and a bigger TX baseline.

Of course with hundreds of watts and a bigger earth-electrode baseline some radiation is likely, so hundreds of km becomes possible. With earth-mode most of the signal is conducted through the ground.

I had to stop when I had my stroke, which stopped me doing all sorts of field experiments. These days I hope others are carrying on where I stopped. Meanwhile I experiment, on something else, at home.

Memories - NOT amateur radio

At the moment I am spending a few days with my brother in Devon where I used to live. It is filled with memories.

One thing I have to learn is memories are just that: they happened long ago and cannot be got back. They are memories that cannot be recreated. They’re to be remembered but cannot ever be brought back.

I think this is important as we spend too much time of our lives time chasing these.

Sunspots- Friday June 27th

 Solar flux is 117 and the SSN 91. A=26 and K=5.

26 Jun 2025

Devon by train- NOT amateur radio


Today I went alone by train to visit my brother in Devon. The journey was uneventful.

Several years ago - 2012?

 This was me at my old QTH on 10m CW in the garden with a loop on the FT817. I think it was 2012.

Sunspots - Thursday June 26th

 Solar flux is 117 and the SSN 90.. A=15 and K=4.

25 Jun 2025

Bunker busting bombs - NOT amateur radio

Last week, the USA used expensive "bunker busting" bombs on at least one Iranian nuclear site. The US president said it was highly effective and has put Iran's nuclear program back many years. 

A leaked intelligence report is more guarded. The know-how still exists and much of the highly enriched uranium may have been moved beforehand.

If the US president is wrong the implications could be enormous. I find it hard to accept that the presidents of the USA and Israel can be so sure, allegedly, unless they really do have incredible intelligence and spies.

Personally, I always prefer talking rather than "bully boy" tactics. 

Orchids - NOT amateur radio

 

My wife has "a way" with orchids with many living for many years. 

The photo is a collage of some of these.

Notice the colour of our grass. It suddenly went brown in the last week. Of course, climate change is just fake news!  It never, ever went brown years ago.

Please wake up: climate change is happening even if people argue about why.

6m QRP FT8 (Wednesday)

Overnight I stayed on 6m FT8 RX but without success. My 5W FT8 TX was turned on before breakfast and has been spotted by Es already at 0700z.

UPDATE 1310z:  Spotted by 247 stations on 6m QRP FT8, mostly Es. Yet again VO1SIX (3933km) has spotted me. I think this was again multi-hop Es. On 6m FT8 RX quite a few East Coast USA stations spotted. Probably E layer chordal hop? I don't buy the multi-hop Es in this case. The map shows the USA stations spotted here on 6m FT8 with the omni vertical.

UPDATE 2035z: Plenty of USA and Caribbean stations spotted here on 6m FT8 RX. Now QRT.

Sunspots - Wednesday June 25th

Solar  flux is 120 and the SSN 87. A=7 and K=1.