I read the reviews on the Pro78SE and advance ordered one. It arrived Monday and I replaced my Pro 695 with the Pro 78SE. These are my observations of today.
I have the unit set for highway mode. We went to New York City via the Taconic State Parkway and West Side Drive. I passed a NYSP unit with a car pulled over on the right side of the road. They use Ka exclusively. My Pro78SE went off about 100 feet before the rear of the state police vehicle. Interestingly, it went off saying K mode for about a second and then switched to Ka. I only had about 100 feet before it went off. It stayed on until about 500 feet past the police vehicle. We came from behind the state police vehicle from a bend, but the straightaway after the bend was about 500 feet. I was rather surprised at the short notification. I saw him way before the detector activated. If he did not have someone pulled over I think he would have nailed me, as I had no time to slow down after activation.
Next we passed another state police vehicle on the opposite side of the divided highway. He had a vehicle pulled over and I received no alerts.
After that we passed a County police vehicle that had someone pulled over, coming from the rear of the police vehicle towards it. They also use Ka. No notification. After that we passed a new york city traffic unit sitting on the side of the road. No notification. Seems odd that none of them had their radar on.
As we entered new york city on the west side drive, I got numerous POP alerts and K alerts. I am not too familiar with POP, so I do not know what sets it off. I know the K sets off on a lot of things.
Comparing this to my 695, I am receiving far greater POP alerts. I do not seem to be getting the greater Ka coverage that made me decide to purchase this unit. I have to admit that at this time, I am unhappy with the lack of Ka sensitivity. I am no expert and am only offering my experience on the highways today. I am beginning to wonder if I made a mistake in purchasing this unit and may go back to my 695.