<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></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'>Program the frequencies should not be too big an issue. Rib boxes are cheap and it is likely you can find the software for the MCS series of radios. Looking at some web sites sheds more light on the radios and protocols used. Depending on the band the radio operates on simplex links may or may not be possible. This worked on Motorola DataTAC system so it may take other hardware to make this functional.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>https://batboard.batlabs.com/viewtopic.php?t=96927<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>More on the protocol used is listed on the following Wikipedia page as well.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>https://en.wikipedia.org/wiki/DataTAC<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thank You,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Brian N2KGC<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> aprssig [mailto:aprssig-bounces@lists.tapr.org] <b>On Behalf Of </b>Michael Barnes<br><b>Sent:</b> Monday, September 24, 2018 5:37 PM<br><b>To:</b> Robert Bruninga<br><b>Cc:</b> aprssig@lists.tapr.org<br><b>Subject:</b> Re: [aprssig] APRS on 70CM using a hundred "free" UHF radios (Robert Bruninga)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><div><p class=MsoNormal style='margin-left:.5in'>Programming these things will be the problem. You will need a Radio Interface Box (RIB) to connect the radio to a computer. Then you will need the Motorola RSS software (pricey and limited availability) to configure the radios. There are tons of these radios on eBay for $5-$50. Unless you have the RIB and proprietary software, all you have are conversation pieces and doorstops. I've fought this battle with Motorola equipment numerous times over the years.<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'>Michael WA7SKG<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p></div></div><p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p><div><div><p class=MsoNormal style='margin-left:.5in'>On Mon, Sep 24, 2018 at 1:51 PM Robert Bruninga <<a href="mailto:bruninga@usna.edu">bruninga@usna.edu</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal style='margin-left:.5in'>I had forgotten that they first have to be programmed to frequencies...<br>then we need to understand what kind of serial data in the data port does<br>what and how or what gets to the other end...<br><br><br>Bob<br><br>-----Original Message-----<br>From: aprssig <<a href="mailto:aprssig-bounces@lists.tapr.org" target="_blank">aprssig-bounces@lists.tapr.org</a>> On Behalf Of John Gorkos<br>Sent: Monday, September 24, 2018 4:38 PM<br>To: <a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a><br>Subject: Re: [aprssig] APRS on 70CM using a hundred "free" UHF radios<br>(Robert Bruninga)<br><br>Geez, that thread is basically a treatise on Why I Hate The Internet, and<br>Most Human Beings. Just chock full o' love and help.<br><br>That being said, I just bought two of these radios on Ebay for $20.<br>We'll see what I can do with them.<br><br>AB0OO<br><br>On 9/24/18 12:52, John D. Hays wrote:<br>> <a href="https://forums.radioreference.com/motorola-forum/179932-motorola-vrm-6" target="_blank">https://forums.radioreference.com/motorola-forum/179932-motorola-vrm-6</a><br>> 50-a.html<br>><br>> On Mon, Sep 24, 2018, 12:06 radio nn4qq <<a href="mailto:radio.nn4qq@gmail.com" target="_blank">radio.nn4qq@gmail.com</a><br>> <mailto:<a href="mailto:radio.nn4qq@gmail.com" target="_blank">radio.nn4qq@gmail.com</a>>> wrote:<br>><br>> This EBAY post includes a few pictures<br>><br>><br>> <a href="https://www.ebay.com/p/Motorola-VRM-650-Data-Mobile-Radio-F3454a-VRM65" target="_blank">https://www.ebay.com/p/Motorola-VRM-650-Data-Mobile-Radio-F3454a-VRM65</a><br>> 0/1311778416<br>><br>><br>><br>> On Mon, Sep 24, 2018 at 2:48 PM Ross Whenmouth <<a href="mailto:ross@topwire.co.nz" target="_blank">ross@topwire.co.nz</a><br>> <mailto:<a href="mailto:ross@topwire.co.nz" target="_blank">ross@topwire.co.nz</a>>> wrote:<br>><br>> The VRM650 is an RD-LAP machine, configured ex-factory for<br>> either 9.6 or 19.2 kbps (12.5 or 25 kHz channelisation<br>> respectively).<br>> I don't know enough about RD-LAP, but presumably, you will be<br>> able to encapsulate AX.25 packets inside of RD-LAP packets?<br>><br>> If the amateur community gets enough of these radios to make it<br>> worth while, it is probably within the realms of feasibility<br>> (with considerable effort) to reverse engineer the VRM650 and<br>> write a "ham" firmware for it "from scratch" which speaks AX.25<br>> (and doesn't have copyright issues with Motorola service<br>> software)<br>><br>> 73<br>> Ross Whenmouth ZL2WRW<br>><br>>> Apparently the Motorola VRM650 UHF data radio should be<br>>> available for almost free by the hundreds.<br>>><br>>><br>>><br>>> These are Motorola VRM650 modems which I think are a 40 Watt<br>>> MCS2000 radio with a different faceplate and only a DB9 rs232<br>>> port.<br>>><br>><br>> _______________________________________________<br>> aprssig mailing list<br>> <a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a> <mailto:<a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a>><br>> <a href="http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org" target="_blank">http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org</a><br>><br>> _______________________________________________<br>> aprssig mailing list<br>> <a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a> <mailto:<a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a>><br>> <a href="http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org" target="_blank">http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org</a><br>><br>><br>><br>> _______________________________________________<br>> aprssig mailing list<br>> <a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a><br>> <a href="http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org" target="_blank">http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org</a><br>><br><br>_______________________________________________<br>aprssig mailing list<br><a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a><br><a href="http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org" target="_blank">http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org</a><br><br>_______________________________________________<br>aprssig mailing list<br><a href="mailto:aprssig@lists.tapr.org" target="_blank">aprssig@lists.tapr.org</a><br><a href="http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org" target="_blank">http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org</a><o:p></o:p></p></blockquote></div></div></body></html>