[Heathkit] Amp Keying Interface?

[eugene at hertzmail.com]

This is a very interesting thread. I have often wondered how to best
make a silent TR relay.  I have a standard dow 115vac relay in my
station with some aux contacts for muting that makes a real racket!  I
have always seen the Johnson-style tube tr relays ($$) , but this thread
got me to wondering if anyone made a solid state TR relay that can
handle 100W? (I mean one for <$50!) 

Eugene, w2hx


-----Original Message-----
From: heathkit-bounces at mailman.qth.net
[mailto:heathkit-bounces at mailman.qth.net] On Behalf Of Robert Nickels
Sent: Tuesday, July 31, 2007 3:35 PM
To: Peter Markavage
Cc: heathkit at mailman.qth.net
Subject: Re: [Heathkit] Amp Keying Interface?

Peter Markavage wrote:
> Solid-state switching is quick, quiet, and reliable.
>   
Exactly.  

Five bucks will buy a nice solid state relay that will happily switch 
your 120v amplifier from a low current DC input and give you a couple of

KV of optical galvanic isolation for your rig to boot.   Why mess
around?

For example:   
http://www.allelectronics.com/cgi-bin/category/500500/Solid_State.html

Or your local industrial control distributor.

73, Bob W9RAN

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