Re: garage remote jamming

["Robert Green" <ROBERT_GREEN1963@xxxxxxxxx>]

"Dave Houston" <nobody@xxxxxxxxxxxx> wrote in message
news:45e774c5.789970453@xxxxxxxxxxxxxxxx
> "Robert Green" <ROBERT_GREEN1963@xxxxxxxxx> wrote:
>
> >I went to the Lutron site and about all I could find in the FAQ about
> >vulnerability to jamming from higher powered transmitters is this:
> >
> >*****************************************************************
> >http://www.lutron.com/radiora/ra_faq.asp#Q16
> >
> >"Q16: Will other equipment in my home or neighboring homes interfere with
my
> >RadioRA system?
> >
> >RadioRA operates at a frequency different from most remote controls,
> >cellular/portable phones, and other wireless devices. The RadioRA
> >communication protocol ensures that any device operating at the same
> >frequency will not affect the lighting on your system. Also, your system
> >will not affect other RadioRA systems. During startup, your system
searches
> >for other systems in the area and creates a unique system code to prevent
> >cross-system interaction."
> >
> >***************************************************************
> >
> >I think a careful read of that says that while a new military transmitter
on
> >the RA frequency won't turn your lights on inadvertently, there's no
> >assurance that the user will still be able to control the lighting
either!
>
> That's a nice mixture of technobabble and deliberate disinformation.
>
> IIRC, RadioRA uses 418MHz ASK which is the same frequency and modulation
> used by _most_ RF remotes (X-10's 310MHz being the exception).

So in reality, X-10 is the one that actually "uses a frequency different
from most remote controls, cellular/portable phones, and other wireless
devices" not RadioRA.  How ironic!

> Assigning a unique "housecode" may prevent accidental interoperability
> between neighbors but it will not prevent (any more than Z-Wave using
> encryption) capture & playback or jamming. Insteon and UPB require
> enrollment of each device which does prevent casual neighborly
interference.

If RadioRA is jam-proof, I'd sure like to know how they did it.

> But, methinks you are arguing with a RadioRA dealer who already knows all
> the above. ;)

Really?  I don't remember him revealing that he was any more than a
satisfied customer.  Did I miss a post?

--
Bobby G.