Am Sa 26. Juli 2008 schrieb christopher bradski: > Just curious if there is a gsm "saw filter" somewhere in the audio path (or > another filter by the amp)? Not quite sure what you mean by saw-filter, but i guess the answer is "No".
> Also, I haven't popped open my freerunner yet > but could another fix be that a small capacitor could be strategically > placed to filter out the noise (like the sd card issue (worked in my car > audio....))? That's our big hope, but so for all investigations/reworks (there were quite a few) didn't yield the results we needed. > Sorry for so many questions/possibilities... Is the Vcc path to > the gsm transmitter to close to an audio path Yes it is (near bat-con), but we seem to have made clear it's not the source of the problem. The problem can be triggered by introducing external RF (second cellphne e.g.), so internal VCC-issues are off he list. > or could it just be something > is tied down to an incorrect ground location? See above > I'm sure the Openmoko team is > already on top of this though. Bet we are ;-) cheers jOERG
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