Hi Mike,
Having had NTL cable Digital Plus installed here some months back, I can
confirm that no new QRM on 136 has been observed here that could be attributed
to that service.
I do not use the E-mail service however. Several other neighbours also have NTL
digital cable TV and no problems from them.
So I would agree that the QRM that G8RW is suffering from is probably a result
of a faulty installation, probably the PACE box. I haven't got round to fitting
ferrite rings on the power supply to that box because so far I have not found
it necessary.
What I did find was that the previous Sky analogue box generated a lot of QRM
until I fitted ferrite rings to the mains cable.
73 John, G4CNN
-----Original Message-----
From: "Mike Dennison"<[email protected]>
To: [email protected]
Date: Wed Jul 25 04:14:37 PDT 2001
Subject: LF: G8RW and NTL QRM
GW4ALG wrote:>> Recent letters from G8RW describe continuing QRM problems on 136
kHz from an NTL cable television interface installed in a
neighbour's house.
I am using NTL for my analogue cable TV, and have no trouble at all. The
cables (one for radio and one for TV, are within three metres of my antenna.
At least two of my neighbours use NTL's high speed internet connection
(cable modem) and I have no problem with those either. I suspect, but don't
know for sure, that at least one neighbour has NTL digital cable. My belief is
that the distribution is done on glass fibre, with local feeds in coax. All of this
suggests that the installation near Bob is faulty, not inherently noisy.
Bob's next move should be to contact the RSGB EMC Committee (see RSGB
Yearbook or the web site, or phone HQ). This is a free service to RSGB
members and at least two other LFers have already benefited from it.
Mike, G3XDV (IO91VT)
http://www.lf.thersgb.net
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