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Yeah, that's the general idea. The location of the Linux server running app_rpt/Asterisk can be<br>more or less anywhere within Internet connectivity of all of the receiver and/or transmitter sites.<br>Of course, "Internet" can mean either some sort of public Internet connection, or a privately-provided<br>Internet connection (low-cost microwave link(s), etc).<br><br>The only limitation is that an RTCM/Voter module *must* be located on the same LAN as the Linux<br>server, to at least provide a GPS-based timing reference. A system could be set up with a server<br>located in some sort of datacenter "on the ground", and all the radios could have an RTCM "on the<br>hill" with them, and as long as there is Internet connectivity of some sort between each of them<br>and the server, the system will work nicely. That is providing that there is an RTCM located at<br>the server location also (whether or not that particular RTCM has radio hardware connected to it<br>or not).<br><br>One minimal Linux server can easily support 1 or 2 dozen RTCM's (on 1 or 2 allstar nodes),<br>and a larger server could easily support MANY dozens of them on dozens of allstar nodes.<br>Of course, you REALLY dont want to put too many of them on a single server, being a potential<br>single point of failure. For pretty much any practical purpose, the reasonable limitation is<br>the point of failure/redundancy issue, not technical limitations.<br><br>I'm not sure if you were clear on this, so I thought I would mention that the RTCM is not just<br>usable as a GPS-timing-based Multi-Receiver Voting system and/or a Simulcast Transmitter system.<br>It can also be used as a "generic" radio interface for a conventional (non-GPS-based) either simplex<br>or full duplex (repeater) radio. The advantage of doing this would be to not have the Linux<br>host "on the hill" with the radio (as mentioned above). In addition, the RTCM allows for <br>portable/mobile operation with a mobile/portable Internet connection in both the GPS-based<br>and non-GPS-based environments. <br><br>JIM WB6NIL<br><br><br><div><div id="SkyDrivePlaceholder"></div><hr id="stopSpelling">From: ke6pcv@cal-net.org<br>To: app_rpt-users@ohnosec.org<br>Date: Wed, 21 Dec 2011 10:54:18 -0800<br>Subject: Re: [App_rpt-users] Allstar RTCM (Radio Thin Client Module) is nowavailable<br><br>
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<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2">I have been looking at the Allstar RTCM (Radio Thin
Client Module) and it really looks like a GREAT product and addition
to the already cool Allstar hardware. </font></span></div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2">Among all the other cool features of the RTCM (Radio Thin
Client Module) like Transmitter Simulcasting and Receiver
Voting, if</font></span><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"> I understand the documentation </font></span></div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2">correctly you can use this very small Radio Thin Client
Module at a remote radio site to set up an Allstar repeater node if the
site has internet connection without a COMPUTER at the
site?</font></span></div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2">Then you can point the node on the hilltop back to a server on
the ground somewhere that is easy to get too? </font></span></div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2">How many total sites can you use Radio Thin Client
Modules on and point back to a single server on the
ground? </font></span></div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2">If this is the case, All I can say is WOW, how
cool!</font></span></div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2">73</font></span></div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2">Marshall </font></span></div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span class="ecx104503518-21122011"><font color="#0000ff" face="Arial" size="2"></font></span> </div><br>
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<font face="Tahoma" size="2"><b>From:</b> app_rpt-users-bounces@ohnosec.org
[mailto:app_rpt-users-bounces@ohnosec.org] <b>On Behalf Of </b>Mark
Guibord<br><b>Sent:</b> Sunday, December 18, 2011 11:03 AM<br><b>To:</b>
app_rpt-users@ohnosec.org<br><b>Subject:</b> [App_rpt-users] Allstar RTCM
(Radio Thin Client Module) is nowavailable<br></font><br></div>
<div></div>
<div class="ecxWordSection1"><pre style="background: none repeat scroll 0% 0% white;"><span style="background: none repeat scroll 0% 0% white; color: black; font-size: 11pt;">Allstar RTCM Radio Thin-Client Module, an Open-Source VOIP-Based Voting Multi-Receiver and Simulcast Transmit System is now available for purchase. </span></pre><pre style="background: none repeat scroll 0% 0% white;"><span style="background: none repeat scroll 0% 0% white; color: black; font-size: 11pt;"> </span></pre><pre style="background: none repeat scroll 0% 0% white;"><span style="background: none repeat scroll 0% 0% white; color: black; font-size: 11pt;">F</span><span style="color: black; font-size: 11pt;">or more information visit </span><span style="font-size: 11pt;"><a href="http://micro-node.com/thin-m1.html" target="_blank">http://micro-node.com/thin-m1.html</a> </span></pre><pre style="background: none repeat scroll 0% 0% white;"><span style="color: black; font-size: 11pt;"> </span></pre><pre style="background: none repeat scroll 0% 0% white;"><span style="color: black; font-size: 11pt;">Regards,</span></pre><pre style="background: none repeat scroll 0% 0% white;"><span style="color: black; font-size: 11pt;">Mark Guibord</span></pre><pre style="background: none repeat scroll 0% 0% white;"><span style="color: black; font-size: 11pt;">Micro-Node International</span></pre>
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