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[AMPS] Icom 756

To: <amps@contesting.com>
Subject: [AMPS] Icom 756
From: w8jitom@worldnet.att.net (Tom Rauch (W8JI))
Date: Wed, 19 Mar 1997 21:24:49 -0500
JOHN BASILOTTO wrote:
> 
> I have an Icom 756. I was using it with a Drake L4B. At first everything was
> fine; after about 30 days the reed relay in the Icom froze stuck. The Icom
> relay is rated at 16volts@2amps. The Drake amp has a 12 volt relay but has a
> potential of 26volts with no load. Consider using an aux. relay; otherwise
> you too may have to replace an Icom relay.
> 73, John w5GI

The back pulse caused by the relay field collapse in the Drake really
kills the little reed relays. Every time the reed relay opens the
contact gives a big arc until it welds shut.

I'd use a PNP buffer transistor. Simple, cheap, reliable, fast, and
safe.

73 Tom


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