[amsat-bb] Re: SUD (Small Ugly Dish)

[Eric H. Christensen]

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.


73s,
Eric Christensen, W4OTN
AMSAT Area Coordinator - Southeastern Virginia USA
AMSAT Member 35360
http://www.ericsatcom.net

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?  
> 
> No.
> 
>> 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:
> 
> http://www.ew.usna.edu/~bruninga/ea467.html
> 
> 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
>