At present, I am experimenting to see if I can omit the last audio stage.
There seems to be plenty of spare audio. Being a DSB design, it is
inherently 3dB down in sensitivity, but that has not been an issue hitherto. See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/homebrew/10ft8r-rx.
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Oscar 100
Every few weeks I try to give an update on activity levels on the
narrowband transponder on Oscar 100 using the on-line SDR at Goonhilly
Down. I looked twice last evening at times that would have been European
Sunday evenings.
My impression was that activity levels were quite low with plenty of space.
See https://eshail.batc.org.uk/nb/ .
One of the things now possible on my new web pages is embedding. This has allowed me to add a grabber, so you can see what I am doing on PSKreporter maps. I think you can change the menus. Certainly I can. At the time of writing, I am looking at the last few hours on 10m FT8 RX.
See https://sites.google.com/view/g3xbm4/home/hf-mf-and-lf/10m-ft8-grabber .
For the last hour or so I have been on 10m FT8 RX with the tiny indoor
loop. It is now 1210z and so far 92 stations have been spotted.
UPDATE 1327z: 120 stations spotted today so far on 10m FT8 RX.
UPDATE 1358z: 132 stations spotted today.
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New website live
www.g3xbm.co.uk is now pointing to the new site. If there are any issues or
you notice wrong pictures or errors, please let me know ASAP. For a while things may be wrong. Overall, things should be at least as good as the old
site finally.