[TVARC] Attic Antenna Advice and Council

[Bill Turner]

You can also use a yagi antenna in a vertical orientation for repeaters. Look up Cheap Yagis by Kent Britain for easy to build Yagis.

Sent from Yahoo Mail on Android 
 
  On Wed, Apr 14, 2021 at 8:16 AM, Tom Crawford<tmcsail at sbcglobal.net> wrote:   The foil- good. It’s visible on the inside if it’s there. A realtor told me that they stopped using it at some point because it reduced cell phone coverage (or so it was believed).
If you get that GP-1 just somewhat in the clear, you’ll reach all the repeaters just fine. 
Good luck Jeff and 73,Tom, W3TMC 




On Apr 14, 2021, at 6:27 AM, Jeffrey M Taffuri <jtaffuri at gmail.com> wrote:



 
Thanks Tom,
 
Lots of replies about foil on the roof.  I don't have any on the inside of the roof that I can see.  Is it possible it could be on the outside under the shingles?
 
You're the first person to mention polarization. 
 
 
I'm looking at a Comet GP-1 Vertical VHF / UHF antenna with the goal of improving local RF connectivity (reachable repeaters and local simplex) .
 
So the only vertical items in the attic are the two solar light tubes.
 
I'm gathering from the remarks if I keep the antenna a several feet away from the tubes and not at a wavelength or wavelength multiple I am doing the best I can.
 
73
 
Jeff KO4NCC
 
 On 4/13/21 10:48 PM, Tom Crawford wrote:
  
 Hi Jeff,

I’d like to ask you for some clarification on just what you’re going for-
You say you want a vhf/uhf antenna. 
Is this for hitting the local repeaters?

If that’s your goal, you’ll want a vertically polarized antenna, right? In other words, a vertical antenna. 

As mentioned earlier, the ductwork would largely be perpendicular to a vertical antenna (reducing their coupling effect), but if your roof has a foil barrier, you’ve got a nonstarter for and attic antenna- IMHO. 

73,
Tom, W3TMC 




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