[Elecraft] [K3] Does anyone have an answer to this? Re: M1-M4: Can the CW Paddle that has four memory switches, be wired directly to the K3? Switches built into paddle base.

[Ron D'Eau Claire]

I suspect no one has responded because people are not sure and don't want to
lead you down the wrong path, Mark.

You need to make the circuit closures at your key that the M1 through M4
buttons do on the front panel. To do that with simple switches would involve
paralleling those button contacts with connections to the switches at your
key. First you'd have to dig into the front panel to make the connections
and then there's a whole spectrum of problems that might occur with wires
connected to those circuits. Noise radiation into the receiver, RF pickup
that would activate those functions spontaneously, or activate some other
Front Panel board unexpectedly when you transmit are just a few that come to
mind. 

Bottom line, it appears to require some serious technical evaluation and
testing of the installation.

The better approach would be to command those functions via the rear panel
RS232 interface, but that requires a lot more than a switch at your key. It
might be done with a "black box" interface unit to produce the right data
outputs in response to a switch closure at your key, but again that also
requires a significant design effort.

Ron AC7AC

 

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Mark M W2OR
Sent: Sunday, December 06, 2009 11:52 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] [K3] Does anyone have an answer to this? Re: M1-M4: Can
the CW Paddle that has four memory switches, be wired directly to the K3?
Switches built into paddle base.


Shall we assume the answer is "no" to the below question ??  Anyone out
there
know how to do this?  Thanks! 


Mark M W2OR wrote:
> 
> 
> I have a favorite CW paddle that has four SPST mini- spring switches built
> into its base, intended to activate cw memories in an external keyer
> (which I don't currently have, and prefer not to have).  It's probably
> futile to think these four switches can somehow be hooked up to the K3 to
> activate the K3's M1-M4 memories, but just thought I'd ask the experts
> here.  Again, there's no external keyer here, and the preference is not to
> use one.  Thanks. de Mark w2or.
> 


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