K Band 24 Ghz freq's question. (1 Viewer)

Delta7

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This may have already been covered but I was out shopping with the wife to several different stores today and I kept noting K band freq's on JBV1 from 24.079 to 24.233.

I've haven't experimented with any "tuning" on JBV1, but I'm wondering if there's a way to created custom sweep or mute boxes in that range that would be safe. Do any police radar guns run in that range? If not if there mitigation strategy to only announce on the freq's if it's 4 or 5 bars. I've noticed most of the store automatic door openers only have about 3 bars of signal strength when you pass them.

Thanks,
Delta7
 

BlueV1

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US K-band is from 24.050 to 24.250. The center frequency that K-band devices are supposed to be tuned for is 24.150 or 24.125.
I would say that all police radar likely runs in the range you specified unless it's MRCT/MRCD.

What you are describing with storefronts is exactly what lockouts were made for. JBV1 can store a huge number of lockout locations without issue. Do you have automatic lockouts on?
 

Delta7

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US K-band is from 24.050 to 24.250. The center frequency that K-band devices are supposed to be tuned for is 24.150 or 24.125.
I would say that all police radar likely runs in the range you specified unless it's MRCT/MRCD.

What you are describing with storefronts is exactly what lockouts were made for. JBV1 can store a huge number of lockout locations without issue. Do you have automatic lockouts on?
So that's where I would have to experiment with GPS lockouts. OK I wondered but I've been wary if using lockouts in case some cop might be hiding in the frequency range. I've caught local PD's sitting in CVS parking lots and using that location as a screen. So if I had GPS lockouts and that area would have locked out I would have got nailed. That's my fear.
 

BlueV1

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The default JBV1 settings are +/-8 MHz and 250 meters for a lockout. Here's how that impacts your scenario:

Let's say that CVS has a frequency of 24.090 so the lockout would be created for 24.082 to 24.098. 16 MHz out of 200 MHz within 250 meters diameter.

An officer would have to have his gun set to 24.090 +/- 8 MHz as well. It's a lot of work for that one location. That would also imply that said officer understood exactly what he was doing and sat there frequently enough for it to pay off specifically for speeders with detectors that do lockouts.

But, the V1 will now still pick up and alert to a 2nd signal at that location instead of just 1.

An auto lockout is by default generated after 3 consecutive hits of the same signal at the same location so you'd have to detect the LEO signal 3 times in a row to lock him out.
Even if that could possibly happen, it only takes by default 5 misses to auto delete that erroneous lockout.

Before deleting all of my lockouts at the beginning of 2019, I had 2,300+. Right now I have 1,005 Auto lockouts.
I comprehend Valentine's concern for GPS lockouts, but JBV1 uses some very conservative settings by default and in my understanding and opinion, it's really pretty safe.

JBV1 can be set to show all of your lockouts as you encounter them and any additional signal will stand out.
 
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johnboy00

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So that's where I would have to experiment with GPS lockouts. OK I wondered but I've been wary if using lockouts in case some cop might be hiding in the frequency range. I've caught local PD's sitting in CVS parking lots and using that location as a screen. So if I had GPS lockouts and that area would have locked out I would have got nailed. That's my fear.
JBV1 lockouts are much safer than any standalone RD lockouts. It uses a really tight frequency tolerance, compares each detected signal to historical signals at same location, and each lockout will mute only one signal at a time.
 

LouG

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Our experience is a bit different. K band is for Redflex 24.010 to 24.110 only down here, everything else I mute OTB.
 

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