R7 MCRD, No Wait it's K, no it's MRCD, No......

DC Fluid

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Please watch the video and let me know why this construction sign is giving my R7 a meltdown.
Switches back and forth between K and MRCD multiple times both audibly and on the display.
Doesn't do this on other signs.
Only running MRCD as I was heading into Alberta on this drive.
No other MRCD falses so far.

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Highway mode
K band was indicating 24.146
K wide
K filter on
TSF Off
K Pop off
MRCD on
 
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Jon at Radenso

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It probably uses a phased array antenna that can track multiple lanes for data gathering. I bet the radar signature looks similar to MRCD/BSM falses.
 

DC Fluid

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If that's the case they wasted an upscale unit for one little construction project in the middle of almost nowhere Northern BC 2 lane highway.....
 

420smoke

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My R3 dose that with speed signs sometimes.

It does that do to the strength of the beam, do to the fluctuation of power from the speed sign. It's a little bug that's knowing.
 

cihkal

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I've heard from the boys in canada that monitoring devices are popular like that up there. They give the Unidens a bunch of falses on MRCD, basically one of the very few times you'll see it false. But I bet that is really not good for that driving environment if MRCD is a real threat. I haven't heard of anything that works, but you can do lockouts for MRCD. Not sure how safe it would be if the actual threats are mobile though.
 

leesrt

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I know theres a small town near me that has these new camera housings pointing each way at their main intersection. Each housing has 2 side by side antenna (you can see the silhouette of side by side cans). That trips the mrcd all the time and for almost 1/4 mile out
 

DC Fluid

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It probably uses a phased array antenna that can track multiple lanes for data gathering. I bet the radar signature looks similar to MRCD/BSM falses.
Upon review this is possible.
Freezing the original video as close as I can and other angles I see this sign is built totally different from every other one I see around here.
Very slim power pack instead of a big box and round holes for radar guns.
It seems all the business end of things is inside the sign its self. No other clue to a gun anywhere.
A limited search online didn't reveal any identical models, so may be fairly new tech.
 

Fixxxer0

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i have a similar problem to this with some redlight cameras that are popping up all over nyc and lower westchester now. two of the cameras i found this way are brand new, i was the first to report them on waze. likely wouldn't have spotted it had my R7 not gone crazy

they alert as mrcd and k band, back and forth.
 

leesrt

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i have a similar problem to this with some redlight cameras that are popping up all over nyc and lower westchester now. two of the cameras i found this way are brand new, i was the first to report them on waze. likely wouldn't have spotted it had my R7 not gone crazy

they alert as mrcd and k band, back and forth.
Those are becoming popular in GA and FL as well. The units actually have 2 antenna in the housing so they are working like MRCD. They seem to be putting these up at major intersections now. You'll find them a lot in the Disney/Universal Studios area.
Since this seems to be the trend it will virtually make RD's that detect MRCD useless. These traffic radars put out a hot signal and it's very abrupt, no ramp up. Once I get within about an 1/8th mile the alert comes on for MRCD at almost full strength and doesn't drop until I'm passed the intersection.
 

doubledge

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MRCD is frequency modulated (multi frequency) low power K band. Most RDs I suspect use a limited set of rules to distinguish between alerting MRCD vs just K band. I think it's primarily the low power signature and how it changes freq that triggers the MRCD alert. It's really hard to distinguish. In the end it's all just K band radar.

Here is a great explanation on Radenso's website.
 

Fixxxer0

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Those are becoming popular in GA and FL as well. The units actually have 2 antenna in the housing so they are working like MRCD. They seem to be putting these up at major intersections now. You'll find them a lot in the Disney/Universal Studios area.
Since this seems to be the trend it will virtually make RD's that detect MRCD useless. These traffic radars put out a hot signal and it's very abrupt, no ramp up. Once I get within about an 1/8th mile the alert comes on for MRCD at almost full strength and doesn't drop until I'm passed the intersection.
Ha, just got back from Disney and noticed the same thing (took my R3 for the rental).

I think it is still useful in terms of it being another alert for RLC or speed camera, albeit not a whole lot of advanced notice.

These cameras they are using look identical to speed cameras, maybe they are and have dual function. Visually i cannot tell the difference between the two.

I only assume that some are RLC's because they are right at an intersection, and some others are flagged on waze as RLC... But I know for sure other locations that are speed cameras and they look identical. exactly like the link posted above from radenso (i have driven past that 187th and southern blvd one personally).
 
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doubledge

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I deal with both systems daily. The ones at intersections that do red light work are on poles so they have a clear view of the intersection and some of those will also do speed on green enforcement. Those are the easiest to detect because of their height. If you only get an alert when the light is red it is probably only doing red light work but if it's running on green to you can bet it's doing speed on green enforcement as well. I usually get adequate warning from my R7 for those. The speed only units that are typically the road side boxes and are low are the worst as far as any real detection range.
 

DC Fluid

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I was only curious about this construction speed sign out in the middle of the far north, when no other speed sign to date has triggered this behaviour before.
[email protected] most likely answered the question as this looks like a brand new unit with the latest tech options.
 

leesrt

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Ha, just got back from Disney and noticed the same thing (took my R3 for the rental).

I think it is still useful in terms of it being another alert for RLC or speed camera, albeit not a whole lot of advanced notice.

These cameras they are using look identical to speed cameras, maybe they are and have dual function. Visually i cannot tell the difference between the two.

I only assume that some are RLC's because they are right at an intersection, and some others are flagged on waze as RLC... But I know for sure other locations that are speed cameras and they look identical. exactly like the link posted above from radenso (i have driven past that 187th and southern blvd one personally).
Keep in mind that Florida no longer uses RLC's so what you are seeing is traffic radar. If you look close at the units mounted on the red light poles there are two antenna in each unit. I suspect, as stated earlier, they are meant to read traffic in multiple lanes.
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Keep in mind that Florida no longer uses RLC's so what you are seeing is traffic radar. If you look close at the units mounted on the red light poles there are two antenna in each unit. I suspect, as stated earlier, they are meant to read traffic in multiple lanes.

While Florida didn't outlaw RLC's they did show through traffic data that they were increasing accidents at intersections with RLC's. As a result most cities decided not to turn them back on. You'll notice most cities in Florida actually took the cameras down but these new radar units were installed high up on the traffic light poles.


 
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Heywood

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I was only curious about this construction speed sign out in the middle of the far north, when no other speed sign to date has triggered this behaviour before.
[email protected] most likely answered the question as this looks like a brand new unit with the latest tech options.
A lot of those speed signs have a dual radar approach. Especially the solar powered speed signs. The detectors usually don’t pickup the first trigger, but will the 2nd. Why? Could be the the first signal may be out of our range of the detector. I’m not a 100% sure. It’s like this on every detector I own. The R3 on FW 1.46 was an exception. It had the same issues your seeing now with the R7 on a few same select speed signs.

I’ve sat right in front of them testing this. It seems to use one part of the radar spectrum like a motion detector and the 2nd to show your speed. It doesn’t go off unless there’s a vehicle approaching the sign behind you. They use this to conserve battery power. Especially at night.

The maintenance signs probably work on the same principle. Some have motors on them, but I believe that’s only used to recharge the battery packs.

I wish I could find that documentation again, but those speed signs and maintenance signs do more than you think. They also collect all sorts of fancy stats. Those stats can be downloaded via BT or Wifi to an operator. I can’t remember which it was.

I have seen the Uniden’s do exactly what the OP has seen before to a few speed signs. Not all of them, but a few. I’ve documented this and had quite a few discussion with other members about this when 1.46 first came out for the R3. That seemed to be fixed on 1.48 and 1.50.

It totally missed some K band speed signs when MRCD was activated along with K band. Some it jumped around.

I have no doubt that the R7 could be doing the exact same thing. Especially with the dual horn design. Seeing both the motion and then the radar portion and getting confused.
 

DC Fluid

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Well if anyone wants me to test anything I have 2 more trips past it, today and Sunday.
Lots of driving lately....
 

Heywood

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Well if anyone wants me to test anything I have 2 more trips past it, today and Sunday.
Lots of driving lately....
Try it with only MRCD on and K band off.

I forgot to ask. Are you running signal priority or Ka threat?
 

DrHow

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Ka priority.
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Here's tonights (Halloween) runs by the sign.

Love it... R7 on a pillow, Michael Jackson playing on the cassette in the truck in the background.... Priceless....

thanks for the test.

I wonder if anyone has tested MRCD on and K off with actual MRCD. That combo work in real MRCD life? Asking some of the other a Canadian friends who have extensive real life with MRCD on R platforms (or any for that matter.
 

Heywood

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Thanks for that.

It just what I thought. It’s seeing 2 k band signals and the R7 is getting confused.

Hopefully the new FW they’re beta testing now helps deal with it. It’s not a big deal in the boonies, but it’s all bad if your here in Edmonton and you know they have MRCD parked right beside k band speed signs.
 

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