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Old 10-04-2018, 08:22 AM   #1
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FM antenna near radome??

I have an older Raymarine E120 radome and I need to mount a new FM antenna. Will it pick up radio interference if I place it on the same mast? What distance is recommended between them? Thanks for your help.
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Old 10-04-2018, 08:54 AM   #2
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Shakespeare I believe has a distance diagram on their website.
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Old 10-04-2018, 10:24 AM   #3
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From the Shakespeare website -

Frequently Asked Questions | Shakespeare Marine Antennas


Will metal or other objects that are close to the antenna affect it?

Yes. It is best to locate the antenna at least three feet from any metal objects or other antennas.

I would keep is the 3ft distance.
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Old 10-04-2018, 11:47 AM   #4
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Our FM signal is tapped off an amplifer/splitter from the TV antenna, which is mounted immediately below the 4kW radar antenna and I've never gotten any ill effects on the TV or stereo from having it so close (it does a GREAT job, btw ,plus eliminates an antenna & the running of the associated antenna cable to the stereo) . I would be worried if the radar was transmitting directly into the FM antenna...I suppose then there could be issues. I'd be more concerned about the antenna being too close to the VHF antenna. That's when you would see a problem since the frequencies of the VHF & stereo are very close & the VHF is outputting a continuous 25 watts of power directly into the stereo receiver. A (recreational) radar's output is pulsed and is a way higher frequency than the FM band.
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Old 10-04-2018, 01:39 PM   #5
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I generally do not have the FM radio on while using the radar...
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Old 10-07-2018, 12:18 AM   #6
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Thanks for the good input. I've reconsidered...
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