On Thursday, September 14, 2017 at 12:16:48 AM UTC-4, Del Jensen wrote:
I just got these two instruments and have been bench testing at home. The baud rates are properly set, and the s80 gets gps from the oudie, but about every ten seconds the s80 drops the signal and flashes no data very briefly, then picks it back up. Very consistent timing. Is this normal? It is kind of distracting.

Probably not the issue, but just a thought... Are you bench testing indoors which may interfere/degrade the GPS accuracy/data???