About the buzz

Steve Mosher steve at openmoko.com
Mon Feb 16 12:32:18 CET 2009

  The Buzz is most prominent on 900mhz and then 1800. That's what I've 
been told and it makes sense. Essentially the Buzz is caused by RF 
getting into the mixer line then makes it way to one of the power lines 
going to the mic, which is why Joergs fix involves adding a CAP to the
line going from the mixer to the mic. Personally, I have an 850 phone 
and have never heard the buzz. If you happen to be in an area where 900
is served up, then you got buzz, less on 1800, and none at 1900. What 
matters is the frequency the FR is on.

Pablo Miño wrote:
> Community,
> There is something I do not understand about the buzz. I have 2 chips one
> for my old carrier and one for my new carrier, they are respectively Claro
> Uruguay and Antel. With the Claro chip the other person does not listens to
> the annoying buzz but with the Ancel chip she does.
> Why could that be? I have a US version of the neo, Claro is supposed to work
> on 1900 and Antel in 1800. Would that make the difference???
> Regards,
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