[amsat-bb] Re: 2.4 GHz for R/C use?
kl7uw at acsalaska.net
Wed Jul 4 18:22:11 PDT 2007
Ah No Problems here...we will test our new RC interceptor
missile. We need some targets, anyway :-)
Ha Ha! Well it is not good news for the noise floor on 2.4 GHz no
matter how few flyers (or how many).
73 Ed - KL7UW
At 03:37 PM 7/4/2007, Michael Tondee wrote:
>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 aircraft.
>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.
>Jim Jerzycke wrote:
> > Just stumbled across this in an ad for Tower Hobbies:
> > http://www.towerhobbies.com/rcwnews/070210-futk6900.html
> > I had no idea that the 2.4 GHz band was authorized for
> > R/C use.
> > 73, Jim KQ6EA
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Ed - KL7UW
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