[WT-support] wintest in rtty

[Bob Wilson, N6TV]

Please publish the circuit.

However, a K3 firmware enhancement could make the external relays
unnecessary.

As for doing software lockout in Win-Test, it's possible now, via LUA
scripts that send commands to run on other networked PCs, but it would
probably not be fast enough for serious competitions.

73,
Bob, N6TV

On Mar 6, 2017 5:50 PM, "Yuri VE3XB" <ve3xb at rogers.com> wrote:

Bob,



During WRTC in Moscow me and VE3DZ were using interlocking system with
“First One Wins” for K3 without any problem. You just set TX INH to Low and
with foot switch PTT one radio and short control line for another – simple
few transistors and couple relays circuit.



73 Yuri VE3XB



Note that this is not a "First One Wins" system; if both radios try to
transmit at the same time, both will stop transmitting until there is only
one left that is asserting PTT.  This is due to a limitation of the K3
firmware (inhibited radio still closes its PTT output).  I hope to convince
Elecraft to change this behavior some day.



4O3A sells some complex lockout boxes that will work better:



http://www.4o3a.com/index.php/products/station-automation/lock-x/


73,

Bob, N6TV

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