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Old June 28th 08, 03:07 AM posted to rec.radio.amateur.antenna
amdx amdx is offline
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First recorded activity by RadioBanter: Jul 2006
Posts: 349
Default Parabolic Dish Questions



Gee, getting relevant information from you is a chore, and you seem to
delight in supplying a partial picture.

Now, what frequency WiFi?

If you are thinking of 2.4GHz, you must already have worked out a feed
solution that efficiently illuminates the small dish, a considerable
challenge.

While you are obsessing about calculating the area of an elipse, you
haven't had a look at the disk from the distant end, have you? It is
probably very close to circular in cross section when viewed from afar in
the direction of the beam.

When you have worked through some of this, you might see why offset feed
dishes made for Ku band aren't widely used by informed people at 2.4GHz.
Of course, there will always be the 'innovaters' with a USB wireless
stick pointing at a garbage tin lid or wok... but that says it all,
doesn't it!

Owen

Thanks, Owen
Mike