[Cu-wireless] Antennas, more ideas and a big score

[Paul Wefel]

Quick note.  Before using any type of glues, plastics, epoxies, etc.. on
2.4Ghz antennas you should test its absorption of that frequency.  A rough
test is to place a sample of the material and a cup of water in the
microwave for 15-30 seconds.  If it is significantly warmer coming out than
when it went in, chances are it absorbs microwaves and isn't a good
candidate for antenna material.

I have verified super-glue, hot glue gun glue, and stay-put glue to be ok.
Also checked PVC pipe as a sanity check.

My $.02 worth.

-paul

On Mon, Dec 03, 2001 at 10:48:25PM -0800, niteshad at hushmail.com wrote:
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> First of all, I hope that no one has hacksawed that chunk of PVC pipe yet; we may not need it.  What about sealing the pringles cans with epoxy?  That would weatherproof the antenna and make it more rigid at the same time.  for mounting, we could U-bolt the whole tube to whatever we wanted.  This is basically the same technology that I use to mount my homemade <a href="http://www.aaa.org/articles/atm/copyscope/">Copyscope</A>.  I'll bring the copyscope to the next meeting as a demonstration of what I'm talking about.
> 	In other news, I've scored another microwave dish antenna for the club.  This one is a professional grade dish antenna that used to be used by a financial company to receive stock ticker and other relevant info via a satellite network.  The financial company no longer rents from my landlord, but left the dish on the roof.  Since they left it behind, it's now my landlords' property to dispose of, and they're  willing to give it to me.
> 	The antenna is circular, approximately 1 meter in diameter, painted white/beige and of circa 1985-90 manufacture.  I'll send more info as it developes.
> 
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|Paul Wefel            NCSA                 Network Engineer    |
|phone: 217-244-2193   cell: 217-840-9929   pwefel at ncsa.uiuc.edu|
|CAB 269, 605 E Springfield, Champaign IL 61820                 |
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