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
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 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. 73, Michael, W4HIJ 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
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
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. Jim KQ6EA
--- Michael Tondee [email protected] 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 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. 73, Michael, W4HIJ 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
Sent via [email protected]. Opinions expressed
are those of the author.
Not an AMSAT-NA member? Join now to support the
amateur satellite program!
Subscription settings:
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:
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 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. 73, Michael, W4HIJ 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
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
73, Ed - KL7UW ====================================== BP40IQ 50-MHz - 10-GHz www.kl7uw.com 144-EME: FT-847, mgf-1801, 4x-xpol-20, 185w DUBUS Magazine USA Rep [email protected] ======================================
participants (3)
-
Edward Cole -
Jim Jerzycke -
Michael Tondee