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.

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.

Perhaps others can elaborate further.

Jon VA3RQ

On 2/25/2014 1:28 AM, Wayne wrote:

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?

 

Thank you.



_______________________________________________
App_rpt-users mailing list
App_rpt-users@ohnosec.org
http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users

To unsubscribe from this list please visit http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"
You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.