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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.<br>
<br>
Typically the external oscillator operates at some frequency like
16, 12.5 or 10 MHz but can be locked the GPS that puts out a 1 pps
signal. <br>
<br>
Perhaps others can elaborate further.<br>
<br>
Jon VA3RQ<br>
<br>
<div class="moz-cite-prefix">On 2/25/2014 1:28 AM, Wayne wrote:<br>
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<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">I’ve been doing a lot of reading and I
haven’t
come across anything that talks about VCO locking. How
does Allstar lock the
frequency of each transmitter?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font size="2" face="Arial"><span
style="font-size:10.0pt;
font-family:Arial">Thank you.<o:p></o:p></span></font></p>
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