Thread: Light,Lazers and HF
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Old September 11th 08, 09:02 AM posted to rec.radio.amateur.antenna
Jon KÃ¥re Hellan Jon KÃ¥re Hellan is offline
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First recorded activity by RadioBanter: Mar 2007
Posts: 38
Default Light,Lazers and HF
writes:

On Sep 10, 10:29Â*pm, Art Unwin wrote:
No. The shoebox size antenna would approximate an isotropic if it did
radiate. It would still have to be placed at the focal point of a very
large parabola due to the size of the wave length. Such an antenna, I
believe, on the island of Puerto Rico (the SETI antenna) although it
is currently used primarily as a receiving antenna. That parabola is
positioned to have a very high radiation angle and might not be be
that good for terrestrial DX.

I believe that hams once were allowed to use Arecibo for EME on 80m.
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