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First recorded activity by BoatBanter: Aug 2008
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Default Wiring PA horn output to standard horn?

I'd like to wire the PA horn output from a VHF to a trigger a
tradition non-PA horn. I would think that I could use a relay for
this but could use some guidance with respect to selecting and wiring
the right relay here.
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Default Wiring PA horn output to standard horn?


Tell me more about what you're looking for. *Non-PA horn doesn't say
much....


Sorry-- to clarify-- I would like to use the foghorn function of the
vhf to trigger a traditional (read: non-speaker) 12v horn.
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Default Wiring PA horn output to standard horn?

There is a bit of a challenge doing what you have defined.

The PA output of your VHF radio is an analog (voice) format intended to
drive a speaker. Either an AC or DC relay would respond to the audio peaks
but not provide a contact closure of much length so the horn would only have
erratic short beeps. A somewhat complex circuit could be developed, but in
my opinion this is not a practical application.

Don Dando


"16sail" wrote in message
...
I'd like to wire the PA horn output from a VHF to a trigger a
tradition non-PA horn. I would think that I could use a relay for
this but could use some guidance with respect to selecting and wiring
the right relay here.



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