LMR 400 will work just fine for up to 100 feet or so (US measurements ) LMR 600 is what I used to run up a 180 foot tower to several dish antennae and a single omni directional for wireles laptop users, the dishes were for "bridges between our wired networks. I had sucessful connections over 30 miles... I still have one of the omni directional ant. and an amplifier for a cisco airnet 340b...I will let you have them cheap, I have over 3500 bucks in them but would take conciderably less