[KrisW]

	Quote: Originally Posted by JimDrew
	People forget that we use only the XBEE hardware. The firmware is our own, and if you look at the chipset used with the XBEE, you can clearly see that multiple receivers can be used and the ACKs will not collide. That is completely wrong. We can support 5ms frames, complete with ACKs and change frequencies every single frame. Frames are typically every 22ms. Think that is slow, well I have some news for you. Spektrum frequency hops every frame between two frequencies. They don't "lock on" to two channels as they claim. Every 22ms, the data is transmitted to the other frequency. Interesting too, since their FCC ID clearly shows their system to be a DSSS configuration. Part 15.247 clearly states that any device changing frequencies faster than once every 400ms/dwell is required to occupy no fewer than 15 channels. Hopping every frame is not legal by these rules. When I added the "hop on saturate to foil the bench testers code", I asked for clarification from the FCC on the hopping speed and we either have to transmit with a psuedo-random 15 frequency algorithm, or we can not hop faster than roughly once every 300ms, which is actually faster than the 450ms spacing we had in the original hopping code. So, it was a benefit to look into this.

Is it possible that Spektrum has two transmitter sections in each module, retransmitting the same data and encoding, but on two different frequencies? Seems like every Spektrum receiver I've ever seen has two antennae. . possibly two receiver sections per unit??

hmmmmm. . something to think about, eh? Not that I know. . just that the possibility seems plausible if there are laws and such against single transmitters doing certain things.

After all this time, I'd expect JD to have something better to throw our way than "but. . but. . but SPEKTRUM. . .etc etc etc. . . ."

so, the question then remains, IF XPS is so. . . agile. . .WHY doesn't it ever hop??? AndIF you coulduse multiple receivers. . WHY don't you do it?

Anyone ever seen a video proving that it can, or does? I certainly haven't.