[amsat-bb] Re: Ant in QST
G0MRF at aol.com
Wed Jul 15 16:00:01 PDT 2009
In a message dated 15/07/2009 21:52:06 GMT Standard Time,
nr5ajerry at gmail.com writes:
Has anyone seen the antenna for 2m in this monthsQST p. 30. Its a
omnidirection sorta a double diamond turnstile. I was wondering how
this woould work for the LEO Sats?? Would think it would be simple to
scale it down for 435??
I did see that, but it has very low angle radiation probably with a deep
null at higher angles.
It's advantage was that it has horizontal polarisation.
I can't help but feel a quadrifilar helix would be better There are some
designs out there and there is also an online calculator for the dimensions
for a frequency of your choice.
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