[amsat-bb] Re: 2.4 GHz for R/C use?
kq6ea at pacbell.net
Wed Jul 4 16:47:43 PDT 2007
Yeah, I spent some time on the Futaba website and read
all about it. It's FHSS, and sends the next "hop" to
the receiver so it knows where to go. Interesting
stuff, as I used to fly R/C, and I remember when FM
was the "Hot Setup" to have.
--- Michael Tondee <mat_62 at netcommander.com> wrote:
> Hi Jim,
> Yes, I didn't know either but the the systems have
> been in use for at
> least a year now. They were first only used for the
> newer "park flyer"
> type aircraft with fairly limited range. They are
> now approved for use
> with conventional RC aircraft from the little ones
> all the way up to the
> huge 40% scale planes. I'm not real well versed in
> the technology but I
> do understand it's a variation of the spread
> spectrum technique. The
> first system that was out rapidly switches back and
> forth between a
> couple of unused frequencies. The newer Futaba
> system rapidly switches
> among many different frequencies. The advantage for
> RC pilots is that
> there are no frequency conflicts. There is no need
> for channels and one
> pilot cannot accidently "shoot down" another's
> I don't know the impact they have on S band, if any.
> They might
> contribute to the overall problem with the ever
> increasing noise floor
> on the band.
> Michael, W4HIJ
> Jim Jerzycke wrote:
> > Just stumbled across this in an ad for Tower
> > I had no idea that the 2.4 GHz band was authorized
> > R/C use.
> > 73, Jim KQ6EA
> > _______________________________________________
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> are those of the author.
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