Solar flux is 73 and the SSN 29. A=4 and K=1.
25 May 2021
10FT8R schematic and Firefox
When browsing my 10FT8R webpage, I have embedded the schematic from Google Drive. It is a much clearer PDF document that opens without issues in Chrome. However, it has been brought to my attention by Steve G1KQH that this does not work in Firefox. I tried it myself getting this message:
"Blocked by X-Frame-Options Policy
This page has an X-Frame-Options policy that prevents it from being loaded in this context.
The browser prevented this page from loading in this context because the page has an X-Frame-Options policy that disallows it."
I do not know how to avoid this. If anyone needs the clearer schematic please let me know so I may send you one.
This is a pity as Firefox is a popular browser. I have put the old schematic on as well.
If anyone knows how to overcome this issue in Firefox, please let us know. There may be a way to tell Firefox of exceptions?
UPDATE 0916z: Apparently there is a Firefox extension that may solve the problem. I have not tried it. See https://addons.mozilla.org/en-GB/firefox/addon/ignore-x-frame-options-header/ .
24 May 2021
Chelsea Flower Show - NOT amateur radio
The photo shows one of the exhibits.
10FT8R - improved schematic
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 .
10m FT8 with the 10FT8R and the tiny indoor loop
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 1237z: 113 stations spotted on RX so far today.
23 May 2021
Museum - NOT amateur radio
Slowly things are getting back to normal.
Granddaughter 10 - NOT amateur radio
It is hard to believe she is 10 on Tuesday. This collage shows her over the years.
10FT8R proper schematic
With many thanks to Jay W5OLF here is a proper schematic of this little 10m FT8 RX. At one time I had a copy of SPlan so could create schematics properly although I have no idea where it is now!
I bought the crystal at low cost from 3rd Planet Solar in the USA. They have good stocks and currently are $1.50 each. I pulled the crystal down to 14.037MHz. If you can find a low cost source of 14.037MHz crystals, the inductor in series with the crystal probably won't be needed. I needed enough series inductance with the crystal to pull down 3kHz. Moulded chokes are probably fine in this application. I used a toroid inductor just because it was at hand.
Jay is working on a PCB and improvements.
10m FT8 RX with the tiny indoor loop antenna and the 10FT8R RX
As of about 0817z I turned on my 10m FT8 RX. As yet, just a spot of a Polish station. It is now 0836z.
UPDATE 1116z: 96 stations spotted on RX so far today.
UPDATE 1848z: 343 stations spotted today on 10m FT8 RX with the 10FT8R RX and the tiny indoor loop.
UPDATE 2150z: 403 stations spotted on 10m FT8 RX today. Now QRT.
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