led death from ssb radiation? - SailNet Community
 
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post #1 of 2 Old 04-27-2008 Thread Starter
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led death from ssb radiation?

I've been asked by an owner of a wooden boat with wood mast whether the masthead lights he's contemplating (OGM) could be killed by a burst of energy when the SSB transmits. Salesman says yes, I say no but I concede that it may be possible, given the proximity of the antenna to the wiring unprotected by a metal mast. I've never heard of it, but I wonder....
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post #2 of 2 Old 04-27-2008
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Interesting question.. How far away from the wiring is the antenna?

If I remember my lectures correctly, radiation power drops off exponentially with distance from the antenna, so to fry anything you would need to run the wiring within inches of the antenna itself. The only SSB antennas I'm familiar with are backstay and masthead types and neither would fall into this category.

If in doubt, run screened cable (coax) to the masthead lights - but unless the lights are really cheap rubbish, I would not have thought it was a problem. Be interested to know if it is, though...

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"Honestly, I don't know why seamen persist in getting wrecked in some of the outlandish places they do, when they can do it in a nice place like Fiji." -- John Caldwell, "Desperate Voyage"
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