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Subject:
Re: ARB 704 Purpose
From:
Butch Bussen <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Sun, 2 May 2010 14:04:09 -0700
Content-Type:
TEXT/PLAIN
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TEXT/PLAIN (13 lines) 
This is a good idea.  I may have to look into one of these as well.  A 
couple things can happen, one is the current pull of the relay coil in the 
amp which could overload the current rating of ttthe transceivers
.  Also, when the power is removed from a relay coil, the collapsing field 
causes a reverse voltage which can damage components.  a way to fix this 
is wire a diode reverse across the coil so the diode shorts out the 
reverse voltage.
73
Butch Bussen
wa0vjr
open Node 3148
Las Vegas

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