Valentine has no patent on rear facing antenna in a seperate housing. His patent is for shared circuitry. You can't patent seperate discrete modules. I am sure K40 just sells 2 discrete antennas and they don't do the fancy comparisons which may be patented.
In any event, I love my radar even though I dream of a stealth V1 or 9500 (with discrete front and rear sensing). Saved my ass many times with the rear warning....
Originally Posted by ersin
Oh, I forgot to mention about why Escort doesn't have a rear facing antenna. It's probably because Mike Valentine owns a patent on it. However, that all changes on the 25th of this month. I don't know if Escort has plans on adding one though. Check in with their forums online. But you probably won't get a definitive answer from Escort.
2009 Space Gray Carbon Leather E90 with DCT, Loaded except for that stupid cruise control and moonroof. Mods: Fabspeed 200 cell cats, Xpipe w/resonators and no secondary cats, ESS tune, Eisenmann Sport Mufflers, Vorsteiner Rear Diffuser II, SWS8 subs, JL Audio XD400 bridged 2X200W, built in radar