I've successfully connected an Arduino to an EM-411 GPS unit, and I get the initial "$GPGGA" over serial. However, after the "$GPGSV" message arrives, the GPS starts outputting bogus data (dollar signs with intermittent numbers and letters). Occasionally it will output a "$PSRFTEXT" message, follow…

EM-411 GPS stuck in debug mode?

system April 25, 2012, 9:23am 2

Problem solved! Using version 0022 turned out to solve the problem, most likely because of the older software serial library :~

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