<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Mar 6, 2017 at 4:03 PM, NOEL POULIN <span dir="ltr"><<a href="mailto:ve2fww@globetrotter.net" target="_blank">ve2fww@globetrotter.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">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....</blockquote></div><br>What radio type? With an Elecraft K3, you can use the Inhibit pins and the <a href="https://bit.ly/K3lockout">Simple Lockout Circuit</a> 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).</div><div class="gmail_extra"><br></div><div class="gmail_extra">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.</div><div class="gmail_extra"><br></div><div class="gmail_extra">4O3A sells some complex lockout boxes that will work better:</div><div class="gmail_extra"><br></div><div class="gmail_extra"><a href="http://www.4o3a.com/index.php/products/station-automation/lock-x/">http://www.4o3a.com/index.php/products/station-automation/lock-x/</a><br></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature">73,<div>Bob, N6TV</div></div></div>
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