atms169 wrote:
Hey guys, I'm trying to find radiation patterns or a calculator to see
what would be the best possible coverage for our repeater.
There's a number of calculators on the web, and some good links in the
RB website for Excel spreadsheets where you can see the math if you like.
We
At 50 ft HAAT, which looks as what you have, 10 mi ideal situation
coverage (dist=(sq root (2 x 50)).
A good DB224 or fiberglass like the RFS 220 or Telewave ANT150F6-2 (I am
assuming 2 m) would give good coverage of what you have. Feed line 1/2
heliax a min. At this run going to larger
Performance wise, given the same gain, they will perform the same. However,
the folded dipole array will hold up to a lightning strike and I've never
seen a fiberglass antenna survive one.
Chuck
WB2EDV
- Original Message -
From: atms169 [EMAIL PROTECTED]
To:
One other comment.
If at only 50 ft and this is where you plan staying for a while I would
go with one of the Diamond or Comet longer dual banders. They do
work...just not as rugged and lots cheaper than folded dipoles or RFS
220.
Normally I would not recommed this except you are low,
Hi Nate
we tryed the SD222-SF3PASNM and we find it quite directionnal i must say.
the SD212-HF2P2SNM has been my antenna for 5 years and never failed me and
since we are in salted air region they are well built too.
in fact my other repeater will have this antenna and remember too that the
oh Chuck
after our test here we found also that Fiberglass seems to catch static much
more then metal antenna,
you need a good protection for that.
another to be added!!!
and the angle of radiationdont remember if it was mention in some email???
ok bye for now,qsy at the shuttle
of radiation,,, ,dont remember if it was mention in some
email???
ok bye for now,qsy at the shuttle now!!
gervais ve2ckn
To: Repeater-Builder@ yahoogroups. com From: [EMAIL PROTECTED] com
Date: Sat, 31 May 2008 08:08:32 -0400 Subject: Re: [Repeater-Builder]
Folded Diploles or Vertical antenna
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