[WT-support] wintest in rtty

[Bob Wilson, N6TV]

On Mon, Mar 6, 2017 at 4:03 PM, NOEL POULIN <ve2fww at globetrotter.net> wrote:

> Appreciate it...am going to use two networked computers...but the problem
> will be the lockout circuit.....with me....or a script...will keep on
> searching....


What radio type?  With an Elecraft K3, you can use the Inhibit pins
and the Simple
Lockout Circuit <https://bit.ly/K3lockout> I designed with N6KR, but use a
5V linear regulated power supply with a 10K pullup resistor to each Inhibit
pin instead of Pin 1 to provide the +5V as shown (unless you are using AFSK
instead of FSK, in which case you can use the ACC port FSK pin for the +5V).

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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