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Antenna Damage Question

Old 06-14-2019, 08:06 PM
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Question, I have a hard top Sea Fox and recently forgot to put down my VHF antennae. Ended up cracking the fiberglass. I ordered the same one from Digital, but it has a super long coaxial cable. I need less than 3ft. It came with what appears to be 10’. I have to remove the bonding putty (whatever) that was used as a sealent and had to cut the old cable to get the old antenna off. If I shorten the cable, will it affect the the transmission quality?
Old 06-14-2019, 09:07 PM
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It can, depending on the design of the antenna
Old 06-14-2019, 09:45 PM
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Read the directions that come with the antenna. It should specify the minimum cable length.
Old 06-14-2019, 11:56 PM
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FWIW- Shakespeare says keep a minimum of 3 ' of VHF antenna cable. But I'd think it would be best to keep the antenna farther away from the radio than that if at all feasible.
Frequently Asked Questions | Shakespeare Marine Antennas
Old 06-15-2019, 04:18 AM
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Originally Posted by TreyD View Post
Question, I have a hard top Sea Fox and recently forgot to put down my VHF antennae. Ended up cracking the fiberglass. I ordered the same one from Digital, but it has a super long coaxial cable. I need less than 3ft. It came with what appears to be 10’. I have to remove the bonding putty (whatever) that was used as a sealent and had to cut the old cable to get the old antenna off. If I shorten the cable, will it affect the the transmission quality?
If you mount the antenna directly over the radio, it shouldn't make any difference. You should not be within 3 feet of the antenna when transmitting at high power. The human body, of just under 2 meters, is resonant at that frequency. The RF can get back into the mike cord and cause distorted transmissions.

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