In a message dated 15/07/2009 21:52:06 GMT Standard Time, nr5ajerry@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.

David G0MRF