Moderated Discussion Areas
ContinuousWave: Small Boat Electrical
VHF Radio and Antenna Separation
|Author||Topic: VHF Radio and Antenna Separation|
posted 03-23-2009 02:47 PM ET (US)
When applying the rule that three feet of separation is needed between a VHF Marine Band radio and its antenna, what portion of the antenna actually needs to be three feet from the radio? In other words, could the base of the antenna be within 1.5-feet of the transmitter without creating radio frequency interference?
posted 03-23-2009 02:56 PM ET (US)
If this is not a solution, could one apply some sort of shielding to the housing of the radio ?
posted 03-23-2009 03:26 PM ET (US)
Chop--While the electronic geeks can give you the technical answer, here's my experience: on my Montauk, I had a fixed mount VHF Marine Band radio located in the face of the console and a three-foot Metz brand whip mounted one foot away without any [problem].
posted 03-23-2009 03:51 PM ET (US)
Vertical spacing is the best. Get the antenna as high as possible. If the antenna is three feet above the radio, the separation will be perfect. An antenna three feet away and directly in line horizontally with the radio is not so good. Some antennas encased in fiberglass tubes really only have the top three feet operating as a radiator.
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.