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Old November 5th 07, 11:28 AM posted to rec.radio.amateur.homebrew
Dave Dave is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 108
Default When at last you do seem to succeed...


"COLIN LAMB" wrote in message
...
When the sunspots are really low, there are still radio things that can be
done. Disassemble the old solar powered calculator you got as a freebie
and use it to power a one transistor oscillator, using one of the many old
odd ball crystals you have in a drawer. Then put in a plastic box an hook
a piece of wire to it and place it outside. When the sun shines, the
radio will transmit. The more you have, the more signals you will hear.
You can place many around the neighborhood, if you are into dx.

Since the crystal will be affected by temperature, you can calibrate the
actual received frequency with outside temperature and impress your
friends.

Colin K7FM


Wow. Thanks for the ideas. Seriously though, I am taking advantage of the
lull to improve my project's sensitivity and selectivity. There are still
plenty of targets to aim at, and I have lots of work to do. I still pick up
BBC Africa and a couple of others regularly, and that is enough to keep me
quite busy. By the time sunspots pick up again, I hope to have this thing
working much harder.

Take it easy... 73 and good DX.

Dave