[RFI] 160 Meter RFI Help Needed

[Mark]

Not sure this would really apply in this instance, but ... here is the FCC
"scoop" on RFI that used to was on their site ... May answer other RFI
queries, too .. 73 Mark  AA6DX
http://home.pacbell.net/aa6dx/tvibook.html
----- Original Message -----
From: <n0tt1 at juno.com>
To: <RFI at contesting.com>
Sent: Sunday, January 26, 2003 6:45 PM
Subject: Re: [RFI] 160 Meter RFI Help Needed


> Hi Steve,
>
> > The 160 meter sloper is getting into the two control panels on my
> > home
> > security system.  Anything over about 30 watts causes the "beep" in
> > the two
> > panels to "beep
>
> The alarm circuit wiring is picking up the transmitted signal just
> like a receiving antenna.  A lot of those kinds of problems
> can be cured on 160m by wrapping several turns of the alarm
> cable on a type 73 torroid if there is enough slack cable to do that.
> Otherwise you might try to find one or more type 73 mix snap-on
> RFI chokes.  Another good RFI cure is to install by-pass capacitors
> on all the alarm box leads, right where they attach to the box.
> Try some .01 or even .1ufd disk ceramic capacitors.  A combination
> of the two methods may be needed.
>
> If your alarm system is "wireless", then you
> might want to contact the manufacturer to see if there is a cure; but
> read the FCC statement in your alarm manual first....the part
> about "...must not cause interferrence and must accept
> interferrence..."
>
> 73,
> Charlie, N0TT