[NSRCA-discussion] 2.4ghz

Duane Beck duane.e.beck at comcast.net
Mon Feb 26 07:11:16 AKST 2007


Keep in mind that the 2.4GHz channel bandwidths are a lot wider than the 72MHz frequencies, and it's possible for enough information to get through, even if multiple transmitters are operating in the same channel.

-------------- Original message -------------- 
From: "John Konneker" <jlkonn at hotmail.com> 

> I have been teetering back and forth over buying one of the new DX7's. 
> There has been a lot said about the "can't" be interfered with in the 2.4ghz 
> band. 
> Someone posted this link on one of the RCU threads. 
> http://www.fcc.gov/Bureaus/Engineering_Technology/Documents/cfr/1998/47cfr15.pdf 
> Specifically section 15.247 looks as though it says a channel hoping system 
> can occupy any channel for up to .4 seconds. 
> Although the data to the rx may be unique wouldn't this still cause a 
> lockout due to the bad "packet" being received? 
> Does this mean it would be possible for several FASST channel hoping systems 
> to cause a noticeable problem on a system such as Specktrum's that locks on 
> to a single channel when turned on and stays there? 
> And I guess to some extent to other channel hoping systems? 
> I am no expert... 
> Just trying to understand this sea change about to occur with our radios. 
> Thanks! 
> JLK 
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