GSM-noise "buzz" issue / ways forward
wiederling at googlemail.com
Mon Sep 22 15:54:58 CEST 2008
Is there any way to switch the audio path to some file output?
i.e. can I (potentially) record "buzz" without an active GSM connection
( while irradiating the phone from an external HF source )
would be cheaper and easier to set up that way.
> Well maybe luckily we *might* eventually find a magic place for a (33pF) C
> somewhere near Wolfson chip, to rework GTA02 out in the field this way.
> Anyway I'd rather expect this magic fix to be found by try and error, rather
> than probing on a setup that's completely changed by mere applying a probe to
Could someone with the device open place 100Ohm resistor in series with
3/4pF from the mic line to GND and test it? ( instead of the ferrite bead.
Is the trace in the top layer of the pcb or is it burried?
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