that's right I'm running 2 Bel STi's side by side. They seems to not interfere with each other. Maybe with the STi there is an exception since they don't leak maybe they don't interfere with each other.
I was running both of them with K and Ka on and both would alert to radar at about the same time. Sometimes one would alert a second or 2 before the other and vice versa.
So right now I have one STi with only Ka band turned on and the other STi with only K band turned on. I definately have a very noticable increase in warning on K band from the STi with only K band on. With the other STi searching only Ka seems about the same or maybe just a little better warning on Ka.
I'll let you all know how it works out. For any of you experts (aka Jim) let me know what you think about 2 STi's side by side and whether they could interfere with each other.