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--></style></head><body lang="EN-US" link="blue" vlink="purple"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">I guess because it would take a lot of work fussing with Ebay for days on end trying to scrape up a bunch of identical radios. Or are you saying that they can be found in 20 unit quantities at that price? If so, that’s not a bad approach.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">But I do want the 9600 baud backbone to begin with identical units to minimize the unknowns in getting it up and running.</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Bob, WB4aPR</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Kenneth Finnegan [mailto:<a href="mailto:kennethfinnegan2007@gmail.com">kennethfinnegan2007@gmail.com</a>] <br><b>Sent:</b> Wednesday, June 01, 2016 5:04 PM<br><b>To:</b> Robert Bruninga; TAPR APRS Mailing List<br><b>Subject:</b> Re: [aprssig] E Coast 9600 baud backbone 15W radios (firmware?).</span></p><p class="MsoNormal"> </p><div><p class="MsoNormal">I'm still a bit unclear; why are you trying to homebrew data radios with out-of-band PAs when you can get 25W UHF CDM1250s on eBay for less than $100 a piece? I've been converting all my packet stations over to CDM750/CDM1250s; the standard Motorola 16 pin IO connector is fantastic for packet.</p></div><div><p class="MsoNormal"><br clear="all"></p><div><div><p class="MsoNormal">--<br>Kenneth Finnegan<br><a href="http://blog.thelifeofkenneth.com/" target="_blank">http://blog.thelifeofkenneth.com/</a></p></div></div><p class="MsoNormal"> </p><div><p class="MsoNormal">On Wed, Jun 1, 2016 at 9:40 AM, Robert Bruninga via aprssig <<a href="mailto:aprssig@tapr.org" target="_blank">aprssig@tapr.org</a>> wrote:</p><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in"><div><div><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">By the way, I may have found a possible UHF exciter to get the radios working on 420 MHz, but the question is, is using the KA Packet nodes in the Kantronics KPC-9612’s the only way to do the level 4 network? Although I am sure we can find enough KPC9612’s for the 15 sites, I’m wondering about long term viability?</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Is there software out there to replicate the KA-NODE network (I think it is same as THENET or theoriginal NETROM nodes? Othern than the nice off-the-shelf approach of the KPC9612’s?</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Bob,WB4APR</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Robert Bruninga [mailto:<a href="mailto:bruninga@usna.edu" target="_blank">bruninga@usna.edu</a>] <br><b>Sent:</b> Friday, May 27, 2016 11:31 AM<br><b>To:</b> TAPR APRS Mailing List<br><b>Cc:</b> Robert Bruninga<br><b>Subject:</b> E Coast 9600 baud backbone 15W radios.</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p><div><div><div><div><div><p class="MsoNormal" style="margin-bottom:12.0pt">At Dayton I picked up a box of 25 UHF data radios for the E Coast 9600 baud backbone project.</p></div><p class="MsoNormal" style="margin-bottom:12.0pt">Turns out, they are on 824 MHz. But they have a 15 W driver stage that can give us 15 Watts in the 420 MHz amateur band if we can find a simple UHF transceiver with 1 Watt output. ALl we have to do is bypass the final 45W PA and add a TR switch.</p></div><p class="MsoNormal" style="margin-bottom:12.0pt">Then add a TNC node and we are done.</p></div><p class="MsoNormal" style="margin-bottom:12.0pt">See the info on these radios at the bottom of this page:<br><a href="http://aprs.org/ec9600net.html" target="_blank">http://aprs.org/ec9600net.html</a></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt">So, does anyone have ideas for the 1W UHX XCVR that we can split out the TX and RX separately so we can use these PA's?</p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt">The data radios include a GPS receiver, but we wont need thoes in this application.</p></div><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Bob, WB4APR</p></div></div></div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>_______________________________________________<br>aprssig mailing list<br><a href="mailto:aprssig@tapr.org">aprssig@tapr.org</a><br><a href="http://www.tapr.org/mailman/listinfo/aprssig" target="_blank">http://www.tapr.org/mailman/listinfo/aprssig</a></p></blockquote></div><p class="MsoNormal"> </p></div></div></body></html>