"well, by "intermittent" i mean "for days at a time". and then it will be okay for days or weeks at a time. so, for instance, if i was running in binary mode, and somehow got switched to NMEA mode, and then some time later it got…"
"bill -- thanks. i'll certainly check the baud rate next time i get the symptom. (and i'll try a low rate, specifically to try and reproduce it.) in my case, either due to my particular receiver, or the set of s/w that i'm using to…"