[App_rpt-users] RTCM Simulcast question

[Joe Moskalski]

I will be setting up a 2 site UHF simulcast system in the coming months and
so far I have only one question to ask. The RTCM manual is a little vague
on the GPS part of the setup. Normally, with other types of radio simulcast
products (which I am very familiar with several) all you need to properly
time the audio is a 1 pps signal from the GPS reference. The RTCM manual
makes mention of the NMEA/TSIP data being connected but does not explicitly
say if that serial data is needed or if only the 1 pps is needed for
simulcast operation. From the other simulcast products I have worked with,
you set your bulk delay to a value larger then the delay required for the
furthest site and the system will adjust. Does the RTCM version of
simulcast work the same way? I just want to be sure because this will
determine what type of GPS locked reference oscillator I choose for the
project.

Regards,
KC2IRV
-Joe

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