1-To get the best reception, does it matter what frequencies I program if I want to listen to VC Fire, Seattle FIre, Eastside fire and Tacom Fire?
-------Each system has it's own set of freq's
2-Once I program the frequencies in, can I put VC, Sea, Eastside and tacoma in the same bank?
------You have lots of banks, just put one trunked system in a bank
I programmed the king county (simulcast) frequencies in....are those the only frequencies I need?
------ Need - is what you want to hear. Just go through the freq list's here and read through the posts here and you will get the lay of the land.
http://www.interceptradio.com