[jimh]

Are there any software applications for the MacOS which can emulate a NMEA-0183 listener and sender?

I have seen some free-ware or open source applications for DOS or Windows which can listen to NMEA-0183 data and interpret it, and some of these applications can also create and send NMEA-0183 sentences. This sort of application would be useful for testing or snooping around a NMEA-0183 network.

If I have overlooked something obvious, I ask for your pardon.

[jagasail]

Well, if I understand what you want, seems the obvious place to start is MacENC or GPSNavX. The listening part can be done by either, using the 'monitor' window in the instrument and/or gps screen. You can take a sample then copy/paste into another application for analysis, such as a spreadsheet or word processor. I realize this doesn't do all you want, but lacking anything else it can be useful.

Scot

[jimh]

OK--I poked around and found the monitor button on the GPS window in MacENC. That will be useful. Thanks.

I think I can emulate a NMEA sender using AppleScript and a OSAX extension called SerialPort_X.

[GPSNavX]

In addition MacENC has the ability to send/receive NMEA data over TCP/IP and import NMEA data via a file or repeat it to a serial port. Lots of options.