Nutone is very poorly protected gear--the first time I used a linear in my
house, it fried the circuit board controlling my intercom. Fortunately, no
neighbors have complained so I don't think they have Nutone.
----- Original Message -----
From: "Palomar Engineers" <Palomar@compuserve.com>
To: "owner-rfi" <rfi@contesting.com>
Sent: Sunday, January 07, 2001 9:51 PM
Subject: [RFI] Nutone Intercom
>
> Tim your photos of the Nutone panel and the fact that there are 20 flat
> cables involved makes me think you should not attempt the job. I don't
like
> to discourage hams from purchsing our ferrites but the flat cable split
> beads we sell at $8 each and you'd need one on each cable. More expensive
> than a neighborly helpful gesture should be and may be a mechanical
problem
> getting them all in. Also our flat cable splits are for .05" thick
computer
> cable. In the photo it looks as though they are thicker than that. (For
> Pete, N4ZR: The splits work OK for this application. They are 1" long. The
> toroids you wind are usually only 1/4" thick so one turn of the split is 4
> times as good as one through the toroid. Of course you gain by winding by
> the square of the turns but in something like Nutone you don't have the
> extra wire to wind and you have to disconnect to wind.) Anyhow I now
agree
> with K0IL: Tell the neighbor you'd like to fix it but you are afraid you
> might void his warranty. It is Nutone's problem and the FCC will back you
> on this. Also the Nutone engineers, knowing the circuit, might find a
> simple fix and this information can be given to other users with the same
> problem or, hopefully, put into the equipment at the factory so none of us
> have to contend with it in the future. -- Jack, K6NY, Palomar Engineers
>
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>
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