[amsat-bb] portable questions

[Steve Attfield]

I have a few questions for the group about a portale setup I'm orking 
on. I intend to use it for both linear transponder and FM satellites. 
the setup will consist of yagis for V and U mounted on a camera tripod 
with a short run 5-6 feet of coax to the radios. the first thing i'd 
like to know is: is it worth it to put something like lmr 400 ultraflex 
or will rg 213 work well. also would it be benificial to have a preamp 
to mount on the feedpoint of the downlink antenna?
-Steve VA3SAX