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 Antenna in Contact With Shroud- Problem?		  New Topic  Topic Locked
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Mike L
Deckhand

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15 Posts
Initially Posted - 03/15/2005 :  11:07:36  Show Profile
After stepping the mast this past weekend I noticed that the VHF antenna is in contact with bare metal of an upper shroud. There wasn't time to call and ask for a radio check, etc. Is it a foregone conclusion that the contact will interfere with proper function of the radio, and that I should plan on taking the mast down next time I'm at the boat?
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Arlyn Stewart
Master Marine Consultant

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USA
2980 Posts
Response Posted - 03/15/2005 :  11:30:16  Show Profile  Visit Arlyn Stewart's Homepage
Yes
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jlguthri
1st Mate

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USA
93 Posts
Response Posted - 04/04/2005 :  22:31:47  Show Profile  Visit jlguthri's Homepage
Antennas, in general, are far more complicated that what meets the eye. They are sized as functions of the wave length of the transmitted/recieved signal and people who make them spend long hours worrying about things like impedance matching, etc etc. Having a short circuit of that nature would indeed be bad. It could possible for it harm your equipment as part of the transmitted energy could be reflected back into your radio system (standing waves ratio and all that jazz). It certainlly wouldn't work as advertised...

Not quite VHF, but similar enough and a pretty decient write up..
http://electronics.howstuffworks.com/question490.htm
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.