Re: what is the best wire for a perimeter alarm

["Just Looking" <nospam@xxxxxxxxxx>]

>is roland rubbing off on you?

The newspapers are after me. I wasn't rubbing, I was tying my shoe laces.
Just because I had KY and a condom, you can prove anything ever happened. I
am not now gay and I have never been gay. Is it still too late to get my old
Senate job back?

"Tommy" <tommy@xxxxxxxxxx> wrote in message
news:Xns99AEC17BB316tommynospamcom@xxxxxxxxxxxxxxx
> Jim <alarminex@xxxxxxx> wrote in
> news:1190055655.355159.246040@xxxxxxxxxxxxxxxxxxxxxxxxxxx:
>
> > On Sep 17, 11:32?am, "Bill" <bill190nos...@xxxxxxxxx> wrote:
> >> "Sue"  wrote in message
> >> > My brother-in-law, who is an electrical engineer, would wake up
> >> > from a nap in his easy chair and walk to the kitchen thru the beam
> >> > of his PIR only to have his alarm start wailing.  "Wait", he said
> >> > to himself, "I didn't arm the system!"  After this happened several
> >> > times, he began to wonder, what in the heck is going on that could
> >> > arm my alarm?  One evening immediately after this happened, he
> >> > mosied outdoors, and lo and behold he could hear his neighbor
> >> > talking on his ham radio.  Said neighbor had antennas all over the
> >> > outside of his house.  Ron had not used shielded wire for his
> >> > alarm system. He re-wired that weekend, and problem was solved.
> >>
> >> I had a problem with a TV remote extender not working (Operate the TV
> >> remote from another room). So I enclosed the transmitter in a metal
> >> box, receiver in another metal box (Faraday cages), leaving small
> >> holes for the light to go through, then connected a shielded coax
> >> cable between them. Then it worked just fine.
> >>
> >> The receiver had a light which indicated it was receiving a signal
> >> from the transmitter. Well this light was going almost constantly
> >> even though the transmitter was off! And this was jamming the real
> >> signals so the extender could not work. After I shielded everything
> >> (from external RF), the light on the receiver stayed dark unless the
> >> transmitter was activated.
> >>
> >> Anyway lots of RF around - at least where I live...
> >
> > If you have an RF problem, then it may (meaning maybe)  be addressed
> > with shielded wire. But there are other solutions that might work that
> > would be much simpler to impliment.
> >
> >
> > The point that is trying to be made regarding shieled wire is that it
> > may solve specific problems. However, if used indiscriminately , it
> > can cause problems. Even when called for, it can cause other problems
> > that have to be addressed, in addtion to the original problem. If a
> > mfg has specific requirements to use shielded wire from feed back from
> > the field or by design, they'll certainly tell you to use it.
> > Otherwise, if not recommended, the overwhelming odds in favor of NOT
> > having a problems is the best way to proceed.
> >
> > Use what the manufacturer recommends and if you have a problem,
> > address the specific problem and if it calls for a shield or a choke
> > or a capacitor ..... try what ever is recommended until the problem is
> > solved. If you start out with solutions to problems that don't exits,
> > you'll greatly increase the possiblity of creating issues that
> > wouldn't have existed had you followed the mfg's recommedations.
> >
> > Whew!
> >
> >
>
> Gee,
> That was a long post for you. is roland rubbing off on you?