[aprssig] Compatible GPS for waypoint upload?

[Ron McCoy]

According to the Wikipedia article on SiRF III chipset at:

http://en.wikipedia.org/wiki/SiRFstar_III


The following GPS receivers use SiRF III

    * In 2005 Garmin choose SiRF for selected new Garmin devices including
the new 60csx, 60cx, 76csx and 76cx models.
    * The Garmin Forerunner/Edge 205/305.
    * TomTom Go 910, 710, 510, and One are equipped with SiRF III
    * The Node Explorer uses the SiRF III chipset
    * The 2007 Mio Digi Walker 510c, C310x, C220 and C250 all use SiRF III
    * Microsoft Streets & Trips 2007 with GPS Locator uses SiRF star III

I expect there are more, but this is a start.

Ron

-----Original Message-----
From: aprssig-bounces at lists.tapr.org [mailto:aprssig-bounces at lists.tapr.org]
On Behalf Of Curt, WE7U
Sent: Tuesday, June 12, 2007 3:58 PM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] Compatible GPS for waypoint upload?

On Tue, 12 Jun 2007, Jason Winningham wrote:

> > Perhaps we need a table like:
> >
> >   MODEL  NMEA-OUT  NMEA-IN  SENSITIVE-GPS
> >   -----  --------  -------  -------------
>
>
> Is there a less subjective measure of sensitivity, like number of
> channels?  Are the super-sensitive models the new 20 channel receivers?

I don't think it's a number-of-channels issue.  They seem to be able
to receive at lower S/N ratios.  Perhaps they have additional
channels as well, I don't know.  I agree that it'd be good to get
real values in the table so that we can cover additional "good
things" that might come up in the future, as well as not get older
units classified in the category I listed.

I remember going from the Garmin 1-channel multiplexed between 8
satellite units to the 12-channel parallel units.  This new jump in
capability with the SiRF chipsets appears to be of a similar nature
in usuability, if you can believe the nice things people are saying
aobut them.


> I mean, compared to the old Trimble 6 channel in my truck, pretty
> much any other receiver seems super sensitive. |:

I still have some Trimble SV6 boards...

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
"The world DOES revolve around me:  I picked the coordinate system!"

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