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A 75 ft run of 213 will lose about 3.3 db or just over half of your power; that's 2.4 watts max getting to the antenna. The connectors will lose a hair too. The loss will also effect the radio's hearing ability as well. This can be recovered with a gain antenna, but will eat into the gain it provides; i.e. a 6db gain antenna will be down to 3db. Many type of antennas with Omni-directional and yagi beams being the most popular. Omni sends and receives in all directions while a yagi will concentrate in one direction. The yagi can get more coverage (gain) in one direction and loses coverage from other directions to make that happen (very basic terms here).

I just noticed this was my first post on this forum. So Hello Fellow GMRS operators & enthusiast WRAN 763 Charlie Mc here in NW Arkansas Been 11m for a while, FRS for 3 or so years with the grandkids :) Sold ALL! my 11m equipment and went GMRS this year. I'm a very slow keyboard operator, so I won't post much. But I read a lot. Really it better that way. Thank Ya'll for all the great GMRS info!!! Charlie

Lots of research and trial and error.