Message-ID: <003201beb774$0d00d400$0600a8c0@prstesv1.prestel.co.uk>
From: "Dave" <dave@picks.force9.co.uk>
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: Noise - latest
Date: Tue, 15 Jun 1999 22:14:22 +0100
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Nick / John,

I can rule out BT's "DAX" box which uses analogue carrier multiplex as I had
one here for a while with no RF problems on any band. It was USELESS for use
with a modem though so it's gone now!

73, Dave G3YXM (again)


>On Mon, 14 Jun 1999 15:12:16 +0100, you wrote:
>
>>To briefly answer a few points which were raised:
>>Yes, the poles where the noise peaked are definately telephone poles and
>>NOT power-line poles
>
>
>Just a wild idea.
>
>Have any of your neighbours had 'home highway' (the domestic brand of ISDN
>installed).
>
>BT also have a wonderful little pair of boxes which duplexes two BT lines
onto
>one physical pair of cables. If someone near you has had one fitted
depending on
>the technology used this could increase the noise on the phone lines.
>
>Have you looked at the modulation on the noise in a reasonable bandwidth?
if it
>is 50Hz or harmonic related then it is something to do with distribution
wiring
>or appliances, if it is not mains synchronous then it is an appliance of
some
>sort.
>
>Good luck
>
>Back to lurk mode
>
>Nick
>G4WHO
>