R3 Bogey Tone Question

NorEaster18

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Yesterday, I was sitting in bumper to bumper traffic while commuting into work and came across a trooper running C/O 33.8. While crawling along at under 5 MPH, I was watching the screen of the R3 and noticed that the frequency was bouncing around a little. It started at 33.796 (which is what the R3 announced), went to 33.789, and then finally settled at 33.794 as a meandered past him on the shoulder with a customer.

Now, this made me curious. I have never seen a KA frequency fluctuate like this. It usually stays pretty solid. The only time it changed drastically was when I passed a (rare to me) 34.7 source and I assume he was running a DSR 2x and got his rear antenna as I passed him, as the bogey alert sounded and the new frequency was read. It was a C/O encounter.

I also rarely see 33.8, so this was a pretty new phenomenon. Is there a specific range of fluctuation that the R3 can see and it won't alert the bogey tone? Is this strange fluctuation usual when facing MPH guns? I know that detectors aren't really that accurate. I spend 95% of my time against 35.5 and K band, and they either stay super stable (35.5) or don't announce a bogey alert (K band).

And as an aside, I was coming off a bridge and into a tunnel, so maybe the reflections from the tunnel caused this weird instance?
 

Brainstorm69

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Yesterday, I was sitting in bumper to bumper traffic while commuting into work and came across a trooper running C/O 33.8. While crawling along at under 5 MPH, I was watching the screen of the R3 and noticed that the frequency was bouncing around a little. It started at 33.796 (which is what the R3 announced), went to 33.789, and then finally settled at 33.794 as a meandered past him on the shoulder with a customer.

Now, this made me curious. I have never seen a KA frequency fluctuate like this. It usually stays pretty solid. The only time it changed drastically was when I passed a (rare to me) 34.7 source and I assume he was running a DSR 2x and got his rear antenna as I passed him, as the bogey alert sounded and the new frequency was read. It was a C/O encounter.

I also rarely see 33.8, so this was a pretty new phenomenon. Is there a specific range of fluctuation that the R3 can see and it won't alert the bogey tone? Is this strange fluctuation usual when facing MPH guns? I know that detectors aren't really that accurate. I spend 95% of my time against 35.5 and K band, and they either stay super stable (35.5) or don't announce a bogey alert (K band).

And as an aside, I was coming off a bridge and into a tunnel, so maybe the reflections from the tunnel caused this weird instance?
My recollection is that the bogey tone won't alert unless there is > 5MHz difference in the frequencies. Which means you should have gotten a tone for the 33.796 to 33.789 differential.
 

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Yesterday, I was sitting in bumper to bumper traffic while commuting into work and came across a trooper running C/O 33.8. While crawling along at under 5 MPH, I was watching the screen of the R3 and noticed that the frequency was bouncing around a little. It started at 33.796 (which is what the R3 announced), went to 33.789, and then finally settled at 33.794 as a meandered past him on the shoulder with a customer.

Now, this made me curious. I have never seen a KA frequency fluctuate like this. It usually stays pretty solid. The only time it changed drastically was when I passed a (rare to me) 34.7 source and I assume he was running a DSR 2x and got his rear antenna as I passed him, as the bogey alert sounded and the new frequency was read. It was a C/O encounter.

I also rarely see 33.8, so this was a pretty new phenomenon. Is there a specific range of fluctuation that the R3 can see and it won't alert the bogey tone? Is this strange fluctuation usual when facing MPH guns? I know that detectors aren't really that accurate. I spend 95% of my time against 35.5 and K band, and they either stay super stable (35.5) or don't announce a bogey alert (K band).

And as an aside, I was coming off a bridge and into a tunnel, so maybe the reflections from the tunnel caused this weird instance?
Had the same experience with bogey tone alert with constant on 2X DSR. But when the frequencies are far apart, it only alerts you by voice alert. The other day, there were 3 local PD cruisers that were passing by with constant on radars. Got one bogey alert and 1 voice alert. Can't exactly remember the last 3 digits but all 3 were running on 34.XXX. Here's some of my experience.

 

NorEaster18

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My recollection is that the bogey tone won't alert unless there is > 5MHz difference in the frequencies. Which means you should have gotten a tone for the 33.796 to 33.789 differential.
Maybe it's possible that my eyes deceived me and it actually read 33.798. Oh well, it's lost in history now. Glad to know that it's >5MHz though!
 

KnightHawk

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Don't expect the bogey tone alert of the R3 to be consistent even in the same band. It is not as consistent as the V1. It is very inconsistent.
 

JmsWms

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Don't expect the bogey tone alert of the R3 to be consistent even in the same band. It is not as consistent as the V1. It is very inconsistent.
??? Both my R3 and R7 are very consistent with their bogey tones. Maybe yours is not? Maybe go back to the V1? Seems like a blanket statement.
 

KnightHawk

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??? Both my R3 and R7 are very consistent with their bogey tones. Maybe yours is not? Maybe go back to the V1? Seems like a blanket statement.
If you get 2 CO Ka band signals say a 34.7 and a 35.5 , you won't get a bogey alert tone. Just voice alert when it detects a new Ka frequency from 34..7 to 35.5. This is true with both the R3 and R7. V1 is gone and no need to go back. I can deal with the inconsistencies of the bogey tone alert because it is the least concern that I have with both the R3 and the R7. The very last concerns among others. :)
 
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JmsWms

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If you get 2 CO Ka band signals say a 34.7 and a 35.5 , you won't get a bogey alert tone. Just voice alert when it detects a new Ka frequency from 34..7 to 35.5. This is true with both the R3 and R7.

Hmmm.... When does yours actually give a bogey alert tone then? Mine gives it every time it senses another Ka frequency while it is alerting to the current Ka frequency. I wonder if it makes a difference if you have "Voice" turned on or not. I have voice turned off, and use only "Ka Frequency Voice". Do you have Voice turned on? I'd be curious to see if you get the bogey alert tone in your above scenario while only running Ka Frequency Voice, and not Voice. Also, I assume you have All Threat turned on as well.
 

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Hmmm.... When does yours actually give a bogey alert tone then? Mine gives it every time it senses another Ka frequency while it is alerting to the current Ka frequency. I wonder if it makes a difference if you have "Voice" turned on or not. I have voice turned off, and use only "Ka Frequency Voice". Do you have Voice turned on? I'd be curious to see if you get the bogey alert tone in your above scenario while only running Ka Frequency Voice, and not Voice. Also, I assume you have All Threat turned on as well.
I have "voice" turned on as well as Ka frequency voice turned on with All Threat turned on. I only get the bogey alert tones with 2X DSR when both antenna's are turned on. I will try to turn "voice" off and see what it does and report back.
 

NorEaster18

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I have "voice" turned on as well as Ka frequency voice turned on with All Threat turned on. I only get the bogey alert tones with 2X DSR when both antenna's are turned on. I will try to turn "voice" off and see what it does and report back.
The only time I have heard the bogey tone was also what I believe was a DSR 2x (two different 34.7 frequencies on C/O, changed as I passed the patrol vehicle, and the All Threat displayed a second strong Ka frequency). I have voice off, but Ka frequency voice on.
 

Brainstorm69

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I got a bogey tone on the bench just now hitting my R3 with 33.8 and then with 34.7. FW 1.50. Voice on. Ka Frequency voice off.

[EDIT: then turned frequency voice on and still got a bogey tone.]

[EDIT2: If I released the 34.7 signal and then hit it again with 34.7 less than 1 min after the initial bogey tone, then no new bogey tone. If I waited about a minute before hitting it with 34.7 again, I would get a new bogey tone.]
 
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NorEaster18

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I got a bogey tone on the bench just now hitting my R3 with 33.8 and then with 34.7. FW 1.50. Voice on. Ka Frequency voice off.

[EDIT: then turned frequency voice on and still got a bogey tone.]
Seems to firm up your original statement that as long as there is a certain variance between signals (5 MHz difference), it'll alert
 

Brainstorm69

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Seems to firm up your original statement that as long as there is a certain variance between signals (5 MHz difference), it'll alert
Yes, but see my other edit above.
 

KnightHawk

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I got a bogey tone on the bench just now hitting my R3 with 33.8 and then with 34.7. FW 1.50. Voice on. Ka Frequency voice off.

[EDIT: then turned frequency voice on and still got a bogey tone.]

[EDIT2: If I released the 34.7 signal and then hit it again with 34.7 less than 1 min after the initial bogey tone, then no new bogey tone. If I waited about a minute before hitting it with 34.7 again, I would get a new bogey tone.]
The test just confirms the inconsistencies of the bogey tone alert specially on the EDIT2. NorEaster18's account and my account are consistent with 2X DSR regarding bogey alerts with both antenna's at CO. You don't have to wait 1 min to get the bogey tone alert. You get it in seconds once you get past the front antenna and transitioning to the rear antenna. On your EDIT1, was both radars turned on at the same time staying in CO mode or did you turn on the 33.8 and then the 34.7 within a few seconds? Have you tried pointing both antenna's the opposite direction while both radars are in CO mode and drive parallel to the direction of the antenna's to simulate a 2X DSR encounter? Just would love to see what the results are.
-- Double Post Merged: --
The only time I have heard the bogey tone was also what I believe was a DSR 2x (two different 34.7 frequencies on C/O, changed as I passed the patrol vehicle, and the All Threat displayed a second strong Ka frequency). I have voice off, but Ka frequency voice on.
Had a few encounters with this and is consistent my encounters with 2X DSR.
 
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Brainstorm69

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The test just confirms the inconsistencies of the bogey tone alert specially on the EDIT2. NorEaster18's account and my account are consistent with 2X DSR regarding bogey alerts with both antenna's at CO. You don't have to wait 1 min to get the bogey tone alert. You get it in seconds once you get past the front antenna and transitioning to the rear antenna. On your EDIT1, was both radars turned on at the same time staying in CO mode or did you turn on the 33.8 and then the 34.7 within a few seconds? Have you tried pointing both antenna's the opposite direction while both radars are in CO mode and drive parallel to the direction of the antenna's to simulate a 2X DSR encounter? Just would love to see what the results are.
-- Double Post Merged: --

Had a few encounters with this and is consistent my encounters with 2X DSR.
I don't think it's an inconsistency. I believe its intended to work that way to avoid the bogey tone going off multiple times to the same two signals.
 

oversteer325

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I don't think it's an inconsistency. I believe its intended to work that way to avoid the bogey tone going off multiple times to the same two signals.
This makes sense to me. If one LEO is running CO and second bogey is running IO it would be confusing if it made the bogey tone every time the IO trigger was pulled. I’d think there were more than 2 signals.
 

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From my experience with my locals who run the DSR 2X Stalker 34.7, I do not get the bogey tone until the weaker frequency in the "all threats" window becomes the strongest and occupies the active window. You can hear the bogey tone at 12 seconds. At that point it doesn't matter because you're visual with the cop anyway. This one had 34.710 and 34.670. Ka frequency voice is turned off. This is an R7.

 

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