[Loadstone] can't get SirfStar 3 module to use WAAS

Alan loadstone-l at as2.info
Thu Jan 3 04:38:01 GMT 2008


Shawn, I understand the WAAS command is not standard, so that's unfortunate.

However, as I understand it, WAAS is supposed to be used to enhance 
in-flight navigation by airplanes, so I'm betting its designed to be 
used in motion.

Alan


Shawn Kirkpatrick wrote:
> If waas doesn't work it's not too surprising. There's a few reasons for 
> this. You may not get a waas signal, they seem to be hard to get quite 
> often. Loadstone may not be sending the propper command to turn waas on. The 
> manufacturers are free to implement whatever command they want to turn this 
> feature on so there's no real standard. You'll only get a waas signal if 
> you're standing still so it's really not a lot of help for general 
> navigation.
> 
> On Tue, 1 Jan 2008, Alan wrote:
> 
>> Hi, I have a new Nokia LD-3W GPS module which uses the Sirf Star 3
>> chipset. The unit allegedly supports WAAS. Loadstone supposedly supports
>> WAAS. I have now played with the unit for a week, in two metro areas in
>> North America, and have never got a WAAS or differential GPS signal. I
>> have tried setting WAAS to on, to off, and to unchanged with no effect.
>>
>> I have read some posts in the archives and it seems there may be issues
>> with the Sirf 3 chipset, WAAS, and Loadstone.
>>
>> My question is, can WAAS work or not? (The system, hardware and
>> software, still work real well even if the answer is no.) If so, how do
>> I get it to work?
>>
>> Alan
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