Question about Raymarine Ray45VHF (53 Channels) 2-Way Radio

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VHF Radio The VHF radio on our boat is able to transmit clearly and over long distances of 35nm, however we are unable to receive any responce over about 6nm. Are you able to suggest a solution?. Kind Regards, Capt Geoff Botha

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Check ther frequency tuning.
Sounds like it is off frequency.
Is the VSWR on the aerial Ok

Posted on May 26, 2008


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The big question is how do you know your radio transmits 30 miles but receives only 6 miles?
Clearly you have a friend with a transceiver and you have been playing around together until you formed those conclusions.

What if the other radio received well but didn't transmit so well? Have both radios been checked with a field strength meter to ensure they are both radiating similar power outputs?

Do you receive the carrier wave but no audio at a range greater than 6 miles? If so your friend's radio (and others) might have a modulation problem. Has the signal(s) been analysed with an oscilloscope?

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Even with a fibreglass hull the presence of metal masses can pull the radiation envelope out of shape lengthening the range of both transmission and receiving in one direction and shortening them in another.

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