GSM-noise "buzz" issue

Joerg Reisenweber joerg at
Sat Sep 20 18:01:14 CEST 2008

Am Sa  20. September 2008 schrieb Andy Green:
> Somebody in the thread at some point said:
> | buzz in Germany PLZ-90xxx (Nuernberg/Fuerth/Erlangen), so I would get
> to know
> | about a place where I actually could travel to, to test buzz myself
> here :-)
> You can't actually reproduce this issue?

If I could reproduce here @home (on a non-modified FR during normal call), I 
honestly came up with a complete analysis and ECN months ago. If I had a 
CMU200, I also very likely would know more about exact parameters of call 
setup that produce noise. (@Wolfgang: Werner and Graeme think I should try to 
get a CMU200, urgently)
I had to visit Mickey to hear buzz first time on a normal call (without 
headset connected), and even the same device with same type of SIM didn't 
reproduce buzz here in my home-town (to be exact: in the places I tried here)

Strange enough, in TPE it seems much more easy to reproduce noise. Maybe they 
got different setup of GSM-network there. Alas my last visit there was too 
short and todo-list too long, to find the bead-fix *and* to thoroughly learn 
operate CMU200 and do decent tests on peculiarities of TPE GSM-networks.

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