I was browsing some radar detector patents and found the following:
The patent states that:
This makes me wonder if perhaps the response time and or sensitivity is effected by enabling KU. if the mixer is being turned on and off, that makes me worry that I might miss a KA POP."A novel frequency scheme for a police radar detector enables improved sweeping of the X, K, K.sub.u and K.sub.a radar bands. The novel frequency scheme requires two initial frequency conversions for detection of the X, K and K.sub.a radar bands and a single initial frequency conversion for the K.sub.u radar band with single initial frequency conversion being enabled by disabling the second mixer. "