i'll be installing new vhf and am/fm antennas on my boat this spring. they will mount on my hard top and run to my radios in an electronics box. seems every antenna comes with the standard 30' of cord. i really don't need 60' of cord wrapped up and shoved in my box. can i cut the cords down and install new connectors? i did this with my gps antenna (standard coax connector) and it worked fine. just wondering if it works for these applications. thanks-