[WT-support] transmit inhibit

[Bob Wilson, N6TV]

FYI in case anyone has built my lockout circuit (see link below) for use
with two Elecraft K3s.  There are timing issues in the K3 firmware such that
it is still possible for both radios to be on the air at the same time. The
only resolution is to eliminate the "priority switch" in the diagram and
simply wire the lines together.  Unfortunately this means both radios can
also lock each other out when they both try to transmit at the same time.
:-(

Elecraft is aware of the issue and may eventually come up with a resolution.

73,
Bob, N6TV

On Fri, May 28, 2010 at 3:50 PM, Bob Wilson, N6TV <n6tv at arrl.net> wrote:

> On Fri, May 28, 2010 at 3:22 AM, g3vou <g3vou at sky.com> wrote:
>
>>  Is there a command in wintest to stop 2 transmissions on the same band
>> in multi 2 operation?
>>
>
> No.
>
> Even if it did exist, it could not prevent transmission activated by the
> radio itself, such as pressing a "Voice Keyer Playback" button on the radio,
> or a CW memory button, or the TUNE switch, or the antenna tuner button.  But
> it would be nice for "stacking" outgoing messages between two radios.
>
> I created a hardware lockout circuit for two Elecraft K3s.  You may be able
> to do something similar with other rigs that have a TX INHIBIT line, but
> each manufacturer does something a bit different.
>
> See http://bit.ly/K3lockout for my simple Elecraft K3 lockout circuit with
> priority switch (PDF file).
>
> 73,
> Bob, N6TV
>
>
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