<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Tue, Mar 1, 2016 at 4:15 AM, Rick Dougherty NQ4I <span dir="ltr"><<a href="mailto:nq4i@contesting.com" target="_blank">nq4i@contesting.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div>I could do it with two different internet broadcast IP's, or I can get a simple switch and install it temporarily between two computers so they would only talk to each other...</div><div></div></blockquote></div><div class="gmail_extra"><br></div>You don't even need a switch.</div><div class="gmail_extra"><br>Assuming both stations are operating unassisted, with all databases updated and no need to access the Internet during the contest, you could simply use Windows to assign a fixed private IP addresses to each computer, then use an <a href="http://www.amazon.com/Belkin-CAT5E-Crossover-Cable-feet-Red/dp/B000067RFT">Ethernet Crossover Cable</a> between each pair of computers, or use a <a href="http://windows.microsoft.com/en-us/windows/set-computer-to-computer-adhoc-network#1TC=windows-7">Wireless Ad Hoc Network</a> for computer-to-computer networking.<br><br>e.g.</div><div class="gmail_extra"><br></div><div class="gmail_extra">75m:  192.168.0.1 <===> 192.168.0.2   Broadcast address 192.168.0.255</div><div class="gmail_extra"><br></div><div class="gmail_extra">15m:  192.168.0.1 <===> 192.168.0.2   Broadcast address 192.168.0.255<br></div><div class="gmail_extra"><br></div><div class="gmail_extra">(The IP addresses can be same since, with nothing more than a crossover cable, the two computers can only see each other).</div><div class="gmail_extra"><br></div><div class="gmail_extra"><div><div class="gmail_signature">73,<div>Bob, N6TV</div></div></div>
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