On Sat, Jun 20, 1998 at 02:21:33PM -0400, Timothy D. Gray wrote:
> ok, the Delorme Tripmate GPS would be perfect for this. Delorme says that
> it cannot be used with other software, but a simple mod turns it into a
> standard NEMA generic gps.
>
I have a tripmate, and its not really a mod, its just a software difference,
a few seconds after it starts up it starts sending the word "ASTRAL" to the
serial port, and you have to respond back with the same thing, after that
it sends a NMEA data stream just like any other GPS. The big problem I have
with it (and the reason I will probably replace it with something else), is
that it seems to have a fairly cheesy reciever, if it doesnt have a clear
view of a large portion of the sky it doesnt work (i.e. I get *no* reception
at all indoors or downtown between tall buildings, when other GPS recievers
I have seen for not much more money get a lot better reception). One thing
I do like about the tripmate is that you can "seed" it with an approximation
of your position, which speeds up its signal acquisition time, the software
that Delorme supplies with it allows you to use either your last known
position, or general coordinates for your state, which can cut your
acquisition time from minutes to seconds...
--
Jason Kohles -- System Administrator -- XMission Internet Access
(at work) (at play)
double value; /* or your money back! */
short changed; /* so triple your money back! */
--Larry Wall in cons.c from the perl source code
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