For best FM stereo reception
and range I used a coax switch and two short male-male coax cords to connect to the masthead VHF-FM antenna. Since FM is pretty much line of sight the higher location will pull in a lot more stations.
Have not read any tests on potential signal loss across a coax switch but subjectively do not see any difference in range on the VHF
. Just in case, the switch and cords are right next to the VHF
and it's less than a minute to unscrew the switch and connect the antenna back to the VHF directly.