<div dir="ltr"><div>I changed the subject :)</div><div><br></div><div>I don't think that the 1 PPS GPS will work for this. You need a GPSDO with a 10 MHZ output that then drives something like the <a href="http://micro-node.com">micro-node.com</a> <span style="color:rgb(0,0,0);white-space:pre-wrap">PGCM that then generates the exact clock frequency that your transmitter needs.</span></div>
<div><span style="color:rgb(0,0,0);white-space:pre-wrap">I do not know if they are still selling it or if there are similar products available from other sources.</span></div><div><br></div>There is some information here. <div>
<a href="http://ohnosec.org/pipermail/app_rpt-users/2012-May/004463.html">http://ohnosec.org/pipermail/app_rpt-users/2012-May/004463.html</a><br></div><div><br></div><div>Let me know if you find what you need and get this working. I am also interested in simulcast but have been looking for an economical way to do it. </div>
<div><br></div><div>Chuck, WB9UUS</div><div><br></div><div><br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Feb 25, 2014 at 4:35 PM, Wayne <span dir="ltr"><<a href="mailto:wayne@anywherehost.net" target="_blank">wayne@anywherehost.net</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">
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<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial">Thank you Jon Rorke for a well thought out reply. You hit
the nail on the head and I haven’t seen anything on this topic. That’s
why I asked. I have a Motorola MSF’s and a Motorola MSR that have a VCO
input and I was curious how to interface to it for simulcasting. I also have
Motorola GPS receiver modules that plug into the repeaters. I sincerely
apologize if some find this message thread as stupid, based on private emails, but
not knowing where or who to ask I thought that this was the correct mailing
list.<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial"><u></u> <u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial">Is there an easier way that as a noob with Allstar I just
don’t know about yet? If I read you correctly any GPS that provides a
1pps output provides the VCO locking in some form but is there a tutorial or a
HOWTO that discusses this? I have a TKR-850 that I want to use as well and I’m
not aware of a VCO input. If ya’ll could just point me in the right
direction I’d be much appreciative.<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial"><u></u> <u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial">I appreciate your helpful answer. Thank you.<u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial"><u></u> <u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial">[Quote]<u></u><u></u></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:12pt">uh,.... what?<br>
<br>
Seriously? (I know I'm working on cup #1 and it's not quite 6am... I had
to read this a couple of times to 'really' see this question and it's just as
silly, every time!)<u></u><u></u></span></font></p>
<p class="MsoNormal"><font size="3" face="Times New Roman"><span style="font-size:12pt">[/QUOTE]</span></font><font face="Arial"><span style="font-size:10pt;font-family:Arial"><u></u><u></u></span></font></p>
<p class="MsoNormal"><font face="Arial"><span style="font-size:10pt;font-family:Arial"><u></u> <u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">Message: 1<u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">Date: Tue, 25 Feb 2014
08:49:33 -0500<u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">From: Jon Rorke
<<a href="mailto:jrorke@cogeco.ca" target="_blank">jrorke@cogeco.ca</a>><u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">To: <u></u><a href="mailto:app_rpt-users@ohnosec.org" target="_blank">app_rpt-users@ohnosec.org</a><u></u><u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">Subject: Re: [App_rpt-users]
VCO Locking<u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">Message-ID:
<<a href="mailto:530C9F6D.5060402@cogeco.ca" target="_blank">530C9F6D.5060402@cogeco.ca</a>><u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">Content-Type: text/plain;
charset="iso-8859-1"; Format="flowed"<u></u><u></u></span></font></p><div class="">
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'"><u></u> <u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">If you talking about
synchronizing transmitters for simulcast, then that is done with an external
reference oscillator (instead of the transmitter's internal ref Oscillator) at
each site and that oscillator is locked by a GPS receiver to achieve very
accurate frequency.<u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'"><u></u> <u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">Typically the external
oscillator operates at some frequency like 16,<u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">12.5 or 10 MHz but can be
locked the GPS that puts out a 1 pps signal.<u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'"><u></u> <u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">Perhaps others can elaborate
further.<u></u><u></u></span></font></p>
<p class="MsoNormal" style="text-autospace:none"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'"><u></u> <u></u></span></font></p>
<p class="MsoNormal"><font face="Courier New"><span style="font-size:10pt;font-family:'Courier New'">Jon VA3RQ</span></font><font face="Arial"><span style="font-size:10pt;font-family:Arial"><u></u><u></u></span></font></p>
</div></div>
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