On 1/8/2014 12:08 PM, Sean Heskett wrote: > the part 15 PTP 24Ghz band is only from 24000-24200Mhz (200Mhz of > spectrum) i would assume that the doppler radar for cars is in another > slice of the 24Ghz spectrum. as far as i know 24000-24200Mhz is for > part 15 PTP only. > > shouldn't be an issue. > > 2 cents > > -sean >
I opened the rule book to see what might apply. It turns out that field distubance sensor vehicular systems are allowed, per 15.252, to operate from 24000-29000, but with a maximum EIRP of only -41 dBm. And "Operation shall occur only upon specific activation, such as upon starting the vehicle, changing gears, or engaging a turn signal." So it won't run all the time. This, then, probably isn't what they're using for two-vehicles-away collision avoidance radar. The rules in 15.253 for 77 GHz systems are much looser, and that seems to be where the cars are headed. -- Fred R. Goldstein k1io fred "at" interisle.net Interisle Consulting Group +1 617 795 2701 _______________________________________________ Wireless mailing list Wireless@wispa.org http://lists.wispa.org/mailman/listinfo/wireless
