Aside from all the reported LMR-400 problems I didn't see mention about isolation issues. Two runs of LMR-400 next to each other in a cable tray easily talk to each other. Long adjacent or close spaced parallel feedline runs can easily become problematic.
cheers, skipp > You will be better off if you stay away from the > LMR400 type of coax due to the braid can rub against > the shield (dissimilar metals) and create noise in > your repeater system.
