What I gather is that the K40 is two radar units -- one front, one back. The difference with the V1 is that two antenna inputs are directed into to one processing unit where the two signals are compared and processed before being presented to the user.
But Marysm3 outright claims that K40 has a patent on their two receiver system. If it is patented it's got to be more than just two units reporting separately. But I can't find it. I would love to read it, if it exists.
I've been assimilated. 6MT/ZPP/18"/PS extended.