Thread: GPS GPS GPS!
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Old 11-30-2007, 02:24 AM
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shadowmite
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Quote:
Originally Posted by APOLAUF View Post
Shadowmite, your picture entitled "6800-ant1.jpg", with the white part, that is what our phones actually have, correct? I completely see what you're saying by something "missing", i.e. a longish trace that goes around the similar part. However, the thing pictured in 6800-ant1.jpg, doesn't that correspond to a "Patch Antenna", that many many stand-alone GPS devices have? It looks awfully similar to the antenna found in my Garmin eTrex Legend. A quick Wiki reference pulls up this:

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

Maybe I'm wrong, but the fact is, it's still something. Malatesta, as you have indicated the Kaiser's gpsOne device is the same that we have - the MSM7200 is nothing more than an MSM7500 with a GSM radio and associated tx/rx infrastructure.

I have heard arguments about frequency-modulating the Wifi/BT antenna or even the radio antennas, though I don't know quite exactly how that would accomplish anything reliably - though I freely admit that my background is in digital systems and embedded software, not signals.

I guess my bottom line is this: I choose to believe that we have a hardware GPS capability in the phone, and I believe we have the antenna for it. Patch, or "frequency modulated", whatever it may be, I think we have it. I'm hopeful that we can finally have some peace about this, and that I won't have to carry around my Holux M1000 (the free pouch that came with it is a lifesaver. )... though I suspect that the high-sensitivity SiRF-III receiver on the Holux might beat the crap out of the Mogul's receiver. Either way, let's just hope for the best!
Yep, you are correct, that's the pic the sprint 6800 at least has. And I believe you're also correct it's possible that it's a patch antenna. Hmm, I really can't say at this point, but what about the missing part (I believe a diode)? I think we'll have to wait and see if anything is activated by sprint here. But I will start to reverse the radio code and see if I can find anything that leads me to believe there is a gps mode to enable. With a patch here and there we can supercid the radio and be able to send any AT commands we want (including the gps fix request to test this).
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