[time-nuts] Msg to N.Z. time nuts
Hal Murray
hmurray at megapathdsl.net
Tue May 19 04:00:16 UTC 2009
lists at philpem.me.uk said:
>>> Interesting that the three receivers with issues were all SiRF III
>>> based. Do you know what firmware these were running?
>> Nope. If you know the recipe to find out, I'll ask them. :)
> Failing that, the "sirfmon" app that comes with gpsd might get the
> receiver into binary mode and should let you talk to it, but I
> haven't used it.
Thanks. That works for me.
I started collecting low cost GPS receivers a year or two ago. I thought I
had some with the SiRF-II chips. Either I can't find them or I didn't
actually get any.
GSW3.2.4_3.1.00.12-SDK003P1.00a GlobalSat BU-353
GSW3.2.2_3.1.00.12-SDK003P1.01a AmbiCom GPS-USB Rev 2.1
GSW3.2.2_3.1.00.12-SDK003P1.01a Navibe GM-720
GSW3.2.4Pat2_3.1.00.12-SDK001P1.00 Navisys GR-300
The first 3 are "GPS mice", small with long USB tails. The last one is a
Thumb/Dongle, only a bit bigger than the typical USB Flash drive.
They all use the Prolific PL2303 serial-to-USB chip.
In case nobody hasn't noticed, the price for simple GPS "mice" has been
dropping. It's easy to find them advertised for under $40. Unfortunately, I
haven't been able to get good time out of the USB versions. The old Garmin
GPS-18-USB was actually pretty good. The new 18x isn't very good.
--
These are my opinions, not necessarily my employer's. I hate spam.
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