ORIGINAL: dbspl
If you consider there are 50 dedicated channels in the 72 MHz band (total approx. 1 MHz), and the 2.4 GHz band is 85 MHz wide; you would think that if the 2.4 band were split up into dedicated frequencies (like 72), then the number of dedicated aircraft frequencies the 2.4 band could support would be aroud 4,250. It seems really odd that as few as 40 2.4 transmitters would be the limit using spread spectrum. I don't really believe that, but if it's true, it seems like an awfully inefficient use of bandwidth.
dbspl
Meeting adjourned...It Is?
The 72 frequencies are limited to a bandwidth of 10 KC
DSSS uses a channel 1mhz wide. Spectrum uses two channels. Some others use three.
FHSS skips over the entire 83MHZ band.
You have to give up something to get the plus factors you have on 2.4GHZ.
I would guess if you could get all the systems you need, you could get close to 4000 SS systems operating at the same time on the 2.4 GHZ band. You would probably have some degradation of performance