[RFI] RFI & Alarm Systems?

qrv at kd4e.com qrv at kd4e.com
Fri Aug 3 17:51:21 PDT 2012

It must have been someone else's post I was thinking of.

OK re. the CB-thing, I know others who used to do that in developments
with garage door openers.

> : It sounded as though you reported that their "unintended radiation"
> : extended far beyond their building into the street and into your vehicle
> : - jamming your use of 440.
> No, all the freqs I mentioned are ones I happen to know off the top of my
> head used for wireless alarm systems.  Even the 440 MHz stuff.  I've never
> noted RFI from one, though I suppose the electronics could cause problems
> and maybe their power supplies.  Many of the systems in general, however,
> are very sensitive to legal radio operations.  I've triggered many with a CB
> running 4W into a 102" whip and many more running 100W in the Ham band using
> a 12' whip.  In fact, when I would visit larger cities, I'd get a kick out
> of calling CQ and leaving a swath of building and vehicle alarms going off
> behind me for miles, like the wake of a ship.  Hilarious!
> Kurt


Thanks! & 73, KD4E.com
David Colburn nevils-station.com
I don't google I SEARCH! duckduckgo.com
Network: groups.yahoo.com/group/qrv
Restored to design-spec at Heaven's gate 1Cor15:22

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