Hi Pete,
>MM> Try touching an earth to one of your phone lines during a conversation
>MM> and see what happens.
>Now, I wonder, might it help remove noise from the 'phone line to add
>a shunt to earth/mains-neutral through a suitable capacitor or inductor?
>Sort of an RFI shunt or block as the case may be...or even an 80cycle
>to 6kC bandpass?
Don't bother. :)
Adding *anything* from the line to earth will only make everything
a lot worse (and could even be dangerous). A *good quality* BPF
200Hz - 4KHz should not cause any degredation but it's unlikely to
improve matters noticeably, I'm afraid.
The modem-designers have already included everything practicable to
extract the best bandwidth from the line; changing the characteristics
of the line from normal will only put the modem at a further disadvantage.
The only way to be sure of improving your throughput on a noisy line
is to insist your Telco corrects the fault that is causing the noise.
(Or move house :)
Mike
