Comment Re:Is a 7 Inch Swivel Blade Really Worth $30? (Score 2) 135
I'd say to go with a quad array of helical antennas. (See http://www.slvrc.org/902band/quadhelix.htm) High gain and if you design for 800Mhz it'll cover both the 700 and 850 in a reasonable size range, plus they are extremely forgiving (Yagis tend to be somewhat picky with regards to the design frequency and don't do real with wide-bandwidth signals). Hunt up any Amateur radio operator and they will talk your ear off regarding antenna design, and if you luck into one who has done ATV (Amateur TV) work they probably have some experience designing antennas up in that range. Many folks will tell you that "microwave is hard", but it's become much easier over the past few decades, plus there is the fact that conventional antenna designs that worked well for frequencies below 800Mhz just don't do real well at the higher frequencies (Wide 4 MHZ bandwidth support at 144MHz just doesn't translate well up at 2Ghz...)
Robert