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Roger G3XBM's (Mainly) Amateur Radio Blog

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10FT8R - improved schematic

Posted: 24 May 2021 03:10 PM PDT http://g3xbm-qrp.blogspot.com/2021/05/10ft8r-improved-schematic.html


A few people have wanted a clearer schematic. I have now uploaded it to my website. It was produced by Jay W5OLF.
See
https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/10ft8r-rx .

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10m FT8 with the 10FT8R and the tiny indoor loop

Posted: 24 May 2021 05:37 AM PDT http://g3xbm-qrp.blogspot.com/2021/05/10m-ft8-with-10ft8r-and-tiny-indoor-loop.html


Since before breakfast I have been on 10m FT8 RX with the 10FT8R and the
tiny indoor loop. 26 spots on RX so far (at 0803z). The loop is thin wire
just 50cm across, indoors on the shack windowsill. The 10FT8R is a simple direct conversion receiver shown again below.
As mentioned yesterday, I got the 14.040MHz crystal from 3rd Planet Solar
in the USA. It was very inexpensive. The whole RX is incredibly inexpensive
as you can see!
My thanks again to Jay W5OLF for doing the schematic - much better than my hand-drawn effort!

UPDATE 0855z: At 0815z, I changed the thin wire on my tiny loop to 6mm
diameter copper central heating pipe. It tunes more sharply so is probably
a bit more efficient. At the moment, 52 stations spotted today on RX.
UPDATE 1018z: Currently, 86 stations spotted on 10m FT8 RX (see map).
UPDATE 1237z: 113 stations spotted on RX so far today.

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Sunspots - Monday May 24th 2021

Posted: 23 May 2021 11:32 PM PDT http://g3xbm-qrp.blogspot.com/2021/05/sunspots-monday-may-24th-2021.html


Solar flux is 79 and the SSN 30. A=4 and K=1.

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