Tom, Using a real PC serial port which sets DTR, you just need to send the string ASTRAL to the Tripmate. Then it will start sending NMEA data to the PC.
For a mod which takes care of DTR and feeds ASTRAL back to selfstart the Tripmate, look here: http://www.nwaprs.info/delormetinytrackproject.htm. This method causes the Tripmate to stay powered up all the time, so you should not use the battery pack. Joe Gray W5JG On Thu, Mar 3, 2011 at 11:33 AM, Tom Holmes <thol...@woh.rr.com> wrote: > Joe... > > Any tips on how you set it up to get those messages? > > Tom Holmes, N8ZM > Tipp City, OH > EM79 > > >> -----Original Message----- >> From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On >> Behalf Of Joseph Gray >> Sent: Thursday, March 03, 2011 4:07 AM >> To: time-nuts@febo.com >> Subject: [time-nuts] NMEA time off >> >> Months ago a bought an old Delorme Tripmate for $5 (for that price, >> why not?). Tonight I finally got around to fooling with it. After >> finding out that it was designed to talk only to Delorme software >> without some finagling, I got it to spit out NMEA data to Teraterm and >> other programs. >> >> I discovered two things about the Tripmate. First, the sensitivity >> sucks indoors. It is currently showing 13 satellites visible, but only >> tracking three. Second, the time data from the GPRMC sentence is about >> two seconds behind UTC (using my calibrated eyeball for measuring). >> >> Is the time delay simply due to a firmware error, a low priority >> processing and outputting the NMEA data, or something else? >> >> I was going to attach the Tripmate to a modified Linksys WRT54G WiFi >> router and make it an el-cheapo NTP server. No reason, other than just >> for fun. Even without the two second delay, I know that the WRT54G >> will not be a very accurate NTP server. I was assuming that I'd be >> able to at least get better than one second accuracy, though. I guess >> I can just put in a large fudge factor for ntpd to compensate. >> >> Unrelated to the above, I also have a Timex Ironman runner's watch >> with mating GPS unit (another $5 purchase). The GPS is worn on the arm >> and transmits data to the watch for displaying distance, speed, etc. I >> need to get a battery for the watch, but I believe everything works. >> Taking the GPS unit apart, I find that it is a Garmin. I see some >> interesting test points on the circuit board, so I'm going to see if I >> can get some serial data directly from the GPS, without using the >> watch. >> >> Joe Gray >> W5JG >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.