[amsat-bb] Re: SUD (Small Ugly Dish)
Eric H. Christensen
eric at christensenplace.us
Sun Sep 30 19:34:34 PDT 2007
Thanks Bob. I figured as much but I thought I'd ask. I'm going to try
to set it up for S-band operation. I'm going to try to build a patch
from ordinary items from around the house. Maybe I can document it and
show others how to build their own setup to help demystify 2.4GHz.
Eric Christensen, W4OTN
AMSAT Area Coordinator - Southeastern Virginia USA
AMSAT Member 35360
Donate to the Eagle Fund - http://www.amsat-na.com/donation.php?donate=eagle
Bob Bruninga wrote:
>> Back to my "new" [18"] dish... Being that it
>> is an offset dish, is 1.2GHz possible with
>> this dish?
>> Anyone tried this?
> Yes. I tried it for our satellite labs for students and althogh I get about 14 dB or so measured gain with it at 2.4 GHz, at 1.2 GHz, it was nothing more than a big piece of metal giving no more gain than a flat reflector... maybe between 3 to 6 dB.
> See the photo of its use at 2.4 GHz on the top of this page:
> With the antenna for one of those $75 wireless camera receivers at the focal point, and the companion little wireless camera as a signal source a mile away with only its 1.5" whip antenna, we receive the picture perfectly with a margin of at least 16 dB. This means the picture would still be good out to maybe 6 miles...
> It sure is an easy way to get into Amateur TV. Even though it does not even require a license..
> But if there are wireless LANS around, then the picture gets lots of QRM..
> Bob, Wb4APR
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