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Tips and questions relating to the GPS modules from SFE
By NleahciM
Hi - am I right to understand that the EM-406 module only supports the NMEA GGA, GSA, GSV, RMC, VTG, GLL outputs, and no inputs? Reason I ask is I've been looking over the SIRF NMEA manual (linked to from the sfe EM-406 page: ... anual1.pdf) and it talks of many commands not mentioned in the EM-406 module. These aren't mentioned in the EM-406 manual though. For example, the $PSRF can be used to change the baud rate, which I think would be very helpful.

By karrelsj
it posts NEMA commands. take your SiRF demo and attach its COM port to another COM port running hyperterm.
By ssozonoff
wsc wrote:You can change alot of settings using a program called SiRFDemo, found here

Do you know if these changes are maintained in non-volatile memory or do I loose the settings when I remove power from the unit?

By ckuethe
Settings are stored in battery backed memory - disconnect the battery, everything goes away. IMHO, that's a good thing.