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What NMEA string does Streets & Trips use?
L6E
Anybody know which NMEA string Microsoft Streets and Trips uses to acquire position information from a GPS (ie. GGA, GLL, RMC) or have an idea where I could find out? I'm particularily interested in older Streets & Trips, like 2005, since that's likely what I'll be using. Also does the newer versions still support a serial interface?
MrUmbra
NMEA GPRMC is recognized by most navigation programs. It conveys time, date, latitude, longitude, course over ground, speed over ground and, for some receivers, magnetic variation to convert true directions into magnetic (compass) directions.

--- CHAS
tcassidy
All versions of Streets & Trips only support a serial connection (as in COM port) for a GPS connection.

Terry
Larry
tcassidy is right but this has been the source of much confusion over the years. Let me just clarify that the GPS receiver connects via a USB port not a serial port in S&T (and most other similar mapping software products).
tcassidy
While that can certainly cause confusion, one of the situations that arises from that statement is the expectation of S&T to work with Delorme's USB Earthmate GPS devices.

While the GPS (including the ones packaged with S&T) physically connect to a USB port, they must come with a driver that allows them to provide their signal to a COM port because that is where S&T looks for its GPS information. Eathmate devices do not provide that driver nor is it available.

Terry
L6E
Thanks for the excellent replies.

MrUmbra, I'm not certain what you mean by "most navigation programs". Are you presuming that S&T uses RMC because most other programs do or are you specificaly aware that S&T uses RMC? Is this documented somewhere? I'm about to write a lot of firmware regarding this so I need to be certain about it.
L6E
I found an old Lowrance Eagle GPS that allows me to turn the different NMEA strings on and off at the serial output.
I'm running S&T 2007. It works when outputting a GGA string but not when outputting an RMC, or GLL string.
L6E
In case its helpful to anyone at some point, I contacted NORTHPORT SYSTEMS INC. and asked them which string Fugawi requires. Here is their response:
"Fugawi software requires the RMC sentence - OR - the GGA + VTG sentence."
ChicaViajera
Quote:
Originally Posted by tcassidy
While that can certainly cause confusion, one of the situations that arises from that statement is the expectation of S&T to work with Delorme's USB Earthmate GPS devices.

While the GPS (including the ones packaged with S&T) physically connect to a USB port, they must come with a driver that allows them to provide their signal to a COM port because that is where S&T looks for its GPS information. Eathmate devices do not provide that driver nor is it available.

Terry
Hi Terry, Hopefully I can be of some help. I've been using Delorme products all my life and they DO come with the USB to serial driver. I always used them with the MS Streets & Trips.
Here is the link:

DeLorme Technical Support :: DeLorme Serial Emulation Driver for Earthmate® GPS Receivers

In that link you will always find an updated version of the driver.

Is also worth to mention that Delorme also makes available the magnetic Declination Update and it comes in different formats, depending the Delorme product you are using. So if you are using the USB device with Streets & Trips, then you would have to install the update for that.

Regards,
Virginia Ramunda
Ken in Regina
Welcome to the forum, Virginia. Are you a Travelling Girl for fun or for business??

Thanks for the clarification on the COM driver for the Earthmate devices.

...ken...
tcassidy
Unfortunately, that is not a serial to USB driver, but merely a piece of software that allows the Earthmate signal to appear on several COM ports. It has a flaw I don't care for in that it won't survive a sleep cycle. A similar situation to Garmin's Spanner and neither work with an o/s newer than XP. Nothing wrong with either for people that wish to use those devices with another navigation package but not for recommending either as a versatile GPS device.

Terry
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