SIRFStar IV (4)
Posted: Thu Nov 10, 2011 1:42 am
by anon
I'm looking for a SIRFStar IV module that doesn't come with an antenna attached. Where can I get a high performance one with 66+ channels etc. ?
Re: SIRFStar IV (4)
Posted: Mon Nov 14, 2011 1:55 pm
by mbavaro77
Hi,
All CSR GSD4e (SiRFStar 4) are marked as 48 channels:
http://www.csr.com/products/35/sirfstariv-gsd4e
And nobody would ever need more than that as GPS has only 37 allocated PRN IDs
You may look here:
http://michelebavaro.blogspot.com/2011/ ... rrier.html
for a non-exhaustive list of antenna-less modules; depending where you live, some may be easier to buy than others.
Cheers,
Michele
Re: SIRFStar IV (4)
Posted: Sat Nov 19, 2011 11:34 am
by anon
Thanks, Michele.
Do you know if breakout boards are available for any of those modules? I wasn't able to find any.
Re: SIRFStar IV (4)
Posted: Mon Nov 21, 2011 12:37 am
by mbavaro77
Hi Anon,
The main issues when evaluating GSD4e-based modules are:
- I/Os are usually CMOS 1.8V
- you need to generate a 100ms pulse to turn them on/off
But still, there a few eval kits out there:
1)
http://uk.rs-online.com/web/p/gps-globa ... m/0537717/
+
http://uk.rs-online.com/web/p/communication/7165299/
2)
http://uk.mouser.com/ProductDetail/Maes ... zslb7Bo%3d
3)
http://uk.mouser.com/ProductDetail/Wi2W ... mcKtvyY%3d
etc..
Is that what you were looking for? A simple breakout would have little value as these modules are fairly easy to solder to your PCB using slightly extended copper pads.
Best regards,
Michele