I recently got my 985 back from BEL after being repaired. It was sent in for repair because it stopped picking up 34.7 GHz Ka band signals.
I went cruising last night in a nearby town that uses Stalker Dual radars that, as far as I know, operate on 34.7 GHz. The 985 gave sufficient warning of the first signal I picked up, and it was on a par with V1 (version 1.7). The rear antenna of the V1 did pick up the Ka band signal at a greater range than the BEL and the front antenna on the V1. But still the performance of the BEL and the V1 was as expected. I made two more runs at the Stalker radar. The cops were not in their cars at the time and the radar was transmitting continuously. The first run was with just the 985 on. There was traffic in between me and the radar and it could have been blocking the signal at times. I got .6 mile of warning, which was normal for that terrain and I was driving around a slight curve. The only thing that concerned me was the signal totally disappeared as I drove toward the radar. It was gone for several seconds, and there was not enough traffic to totally block the signal. As I got closer to the radar it came back. And the cops were still out of their cars as I drove by. I did run the 985 in Accusweep mode and Highway mode.
My second run was with the only the V1 powered up. The V1 picked up the signal at the same distance, but the signal never dropped out like it did on the 985. So this make me wonder if the 985 is totally working right.
I went on another test drive tonight, and the results are really strange. I had Accusweep and Highway modes on. This test run was in the same town where AFAIK all the cops use Stalker Duals on 34.7 GHz. The V1 picked up a Ka band signal and it got stronger and stronger, eventually to full scale. The BEL was totally silent, even at point-blank range!
After I pass the cop, and after he was out of range, the 985 picks up a short 33.7 GHz false alarm as I passed another car. The V1 was silent.
I decide to make another run, but with Superwide mode enabled instead of Accusweep. The V1 picked up a Ka band signal, and a second or two later the 985 started alerting! The tech mode display was showing a frequency of 35.2 GHz! What's up with that?
Something doesn't add up here! Based on my results, one cannot rely on Accusweep mode in the US anymore. Unless the Accusweep mode is just not working correctly on mine. Is it possible that some Stalkers are now operating on 35.5 GHz? Even if that's possible, isn't 35.2 rather far away from 35.5 GHz? Or is is possible that Stalker was set up to run at 35.2 GHz? I will double check to see if that department bought any new radar units, but I doubt that they have.
So has anyone had Accusweep fail alert to a Ka band radar in the US? Has Accusweep lost its usefulness? I noticed that BEL does not offer Accusweep on its newer models like the 995 and STi. Did they do that for a reason? Are other Ka band frequencies now being used in the US? Or is my BEL just malfunctioning?
Something is not right here.