[Heathkit] Amp Keying Interface?

[Peter Markavage]

Radio/TV repair shop might be a good place to find them especially if the
shop has been around for a long time. Found some at flea markets. Have no
idea if any of parts suppliers would have them since they're not to
common in equipment anymore. Lots of old radios and TV's used them. The
sensitivity pot resistance isn't that critical since the SWR meter
accuracy is generally fair to poor. If you don't care about the
push-off/pull-on feature, but the desire to put the amplifier in stand-by
without shutting it off, a simple pot with an on/off switch (like a
volume control) will work too. Just wire the switch in series with the
relay lead.
 
Pete, wa2cwa

On Wed, 01 Aug 2007 08:58:25 -0700 "Kenneth G. Gordon"
<kgordon2006 at verizon.net> writes:
> On 31 Jul 2007 at 23:25, Peter Markavage wrote:
> > A "number" of us have replaced the sensitivity control for the 
> SWR
> > adjustment on the SB-200 front panel with a similar resistance pot 
> but
> > one with a push-off/pull-on switch.
> 
> Where did you get this pot/switch?
> 
> Ken Gordon W7EKB