Attached are my simulcast Radio Mobile plots for the two site system I have.
Sam - I'm currently using the BG7TBL GPSDO's that are readily available on eBay. They give both a 10MHz output and a 1PPS. I then use a board that Joe KC2IRV developed that uses a 10MHz signal from the GPS to control the VTune pin on a 9.6MHz OCXO.
I was driving home within the overlap area of the sites again, and noticed that extra "audio delay" to my secondary site. The audio starts first on the main site, few words later, the audio starts on the secondary site... it's quite weird...
Can I attach MP3's to the list here? I might try to obtain an example.
The variable delay on unkeying is still a problem too.