[App_rpt-users] VCO Locking

[Jon Rorke]

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.
>
>
>
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