If you're looking for a bargain, there are quite a few used Garmin 182C units available on EBAY: https://www.ebay.com/itm/Garmin-GPS-map-182C/324036466223?epid=1823980962&hash=item4b7214162f:g:F04AAOSwYDZeFi6H At that price you can buy a second one as a spare. The user manual is available here: http://static.garmin.com/pumac/GPSMAP182_182C_OwnersManual.pdf NMEA port info is on page 73. I have 182C as a backup unit at my lower helm and it's a decent little unit, especially at that price. You'll need to get an antenna for it also. https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=Garmin+GPS+map+182C+antenna&_sacat=0 ============ Date: Thu, 9 Jan 2020 15:33:19 -0500 From: Dickinson McGuire <dickinsonmcguire@gmail.com> I need a new fixed mount GPS with NEMA0183 output. The only ones I can find are two from Furuno. Seems that West Marine does not offer any. Am I correct in believing that there are no others available. I don't want a hand held, a chart plotter or an antenna receiver. Dickinson McGuire