[Elecraft] [K3] K3 & N1MM Problem

[iain macdonnell - N6ML]

On Mon, Nov 7, 2011 at 4:52 PM, John Reilly <reillyjf at comcast.net> wrote:
> While doing Sweep Stakes this weekend, I ran into a K3/N1MM problem:
> When I interrupted a running CW message (like a CQ) with either an
> Escape or a keyboard entry, the K3 would stay in Transmit (Red TX led
> illuminated, no receiver). I had to push the Transmit button to return
> to Receive. I don't recall having this occur in the past.
>
> Has anyone seen this and know how to fix it?

I believe this can happen if PTT is asserted to the K3 by more than
one method simultaneously. W4TV has more details. If you're handling
PTT with some keying interface, including the RTS/DTR lines on the
RS232 port, you should make sure that "PTT via Radio Command CW Mode"
is *disabled*.

    ~iain / N6ML