Buzzing sound

Jeffrey Ratcliffe jeffrey.ratcliffe at
Tue Aug 5 13:18:23 CEST 2008

2008/8/5 Andy Green <andy at>:
> Like Ole says when I started looking at it, by calling a landline in the
> same room and listening to its receiver lying on the desk, it varied
> tremendously and not in a repeatable way.  Eg, it appeared to vary by
> orientation of the phone, but when I traced the path backwards, the buzz
> did not return.

OK. Confirming this - the buzzing seems to come and go in waves of
varying frequency. Even without touching the phone, the buzzing just
comes and goes.

> Also, I had to keep whistling during this to provoke transmission
> actions that seem to be the start of the issue.

You obviously need a signal generator for repeatability - unless you
have perfect pitch...


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