Norman, I acquired a M2 beam from someone who got out of satellites post-AO-40. I have found it works very well, though of course being linearly polarized you can get short dropouts. I have also used a home brew helix, but based on performance have no plans to replace the M2. http://www.m2inc.com/products/uhf/23cm/23cm35ez.html Alan WA4SCA