Video clips of running RD's behind tint or heated windshields

Discussion in 'General Radar Detector Discussion' started by Vortex, Sep 13, 2017.

  1. Vortex

    Vortex Making Videos Administrator Premium Member

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    Hey guys, I was wondering if you could help me with something. I get asked really often about whether or not it's safe to run a RD behind tint trips, frits (those dots on the windshield), heated windshields, etc. I'd like to do a video not only explaining, but also illustrating the impacts those things could have, when they will and when they won't. An easy way to test this out for yourself is to find some radar source like a door opener or whatever (I'd imagine it'd be preferable to find a weaker source that's not maxing out your detector), and see if the signal strength changes if you have the RD behind the area in question (ie. windshield) versus when you move it somewhere else (ie. stick it out your window). I'd love to have a few clips of different people trying this out so we could see examples of both when it is an issue and when it's not.

    So for you guys who have some sort of windshield that affects radar detectors (certain Teslas, Range Rovers, etc.), as well as those of you who don't, could you test it out and post a clip up here so we could all see your results?

    Oh, one last note.. make sure your RD is always pointed in the exact same direction. Since it's gonna be less sensitive off-axis, we'd want to make sure it's the windshield that's reducing the detector's performance and not the orientation of the detector. :)
     
  2. FWGuy

    FWGuy Learning to Fly Beginner User

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    Might be good to suggest settings or to remind people to post their settings when they post a vid.

    Dan
     
  3. Vortex

    Vortex Making Videos Administrator Premium Member

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    Would the settings make much of a difference? So long as the settings are being held constant and the only variable is whether or not there's something in front of the detector and what it is, the settings wouldn't make much of a difference, right?
     
  4. XDA

    XDA Learning to Drive General User

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    I just thought of something when you mentioned Teslas. Would an electric car interfere with a RD?
     
  5. FWGuy

    FWGuy Learning to Fly Beginner User

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    Good points. The only value in everyone using the same settings is that it becomes possible to compare (say) FWGuy's results to (say) Vortexs results if both are using the same detector. So many of us are using the Unidens now that such a comparison might have value but I don't know for sure. But I'm sure most who will post will be using the Unidens. And of course you know how much Uniden's K band can be affected through settings - K filter on/off and then K sensitivity.

    Good catch though. Maybe worrying about the settings won't give much benefit.

    Dan

    --- Post updated ---

    One of the members here (@jdong) has a Tesla and found it interfering with Escort's new installed detector system (MaxCi). Something about the Tesla made the MaxCi false on Ka band.

    I think jdong also ordered an R3 but I haven't seen him post whether he thinks the car is falsing his R3.

    Dan
     
  6. angrypenguin

    angrypenguin Eat Lead Mothertrucker!! Beginner User

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    I did this on my parents S class back when I had an Escort 8500 (I believe it was). The blue one was the one I had. HUGE differences between running it behind the windshield in the coated area vs the place for transponders and such.

    Easily was a 50-80% range decrease on highway mode vs a hospital door opener. My friend had the red one (IIRC - long time ago), same results. (no we did not run them together at the same time).

    I was probably 16 at the time, so it was a long time ago.
     
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  7. FWGuy

    FWGuy Learning to Fly Beginner User

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    Duplicate post.
     
    Last edited: Sep 13, 2017
  8. PY004

    PY004 Learning to Walk

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    Inside the car vs outside the car itself already makes a difference. Not sure how you would rule that out by sticking an RD out the window. But my experiences so far:
    1. 3M Crystalline Tints 40% VLT - No impact on Radar. Significant impact on Laser (tint reflects and absorbs IR).
    2. Mercedes S550 - ~75% signal strength loss when not behind one of three designated areas on the windshield for transponders.
    3. Metallic Tints - ~50-75% signal strength loss.
    4. Dots: In my GLS550 Toyota Corolla seems to make no difference when behind the dots. I'll try testing it tomorrow.
    Edit: brain fart and thought the dots I tested were on the GLS. Turns out the gls has no dots. It was on the Corolla.
     
    Last edited: Sep 14, 2017
  9. PointerCone

    PointerCone M3 Kng Advanced User Premium Member

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    On a Tesla, only the Windshield is an issue. Even Mike V of VR has a Tesla Model S and had recognized this issue. Thetes supposed to be some Tesla WS that ding affect RDs too. @jdong can tell you all about it.
     
  10. HAL3Y SRT

    HAL3Y SRT Learning to Fly Beginner User

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    On my 2014 Jeep SRT, I have every single windshield tinted with 3M Color Stable tint (20% on front windshield, 5% on every other window in the Jeep including the panoramic sunroof). The 3M Color Stable is a non-metalized tint, so it doesn't interfere with signals (according to 3M, and other window tint companies). I can't say if the range on my R3 would be better with no tint, but I can definitely tell you that my R3 performs amazing. Would it be better with no tint at all? Im going to say most likely, but nothing too noticeable. I mean my R3 will pick up a LEO WAYYYY off axis, coming down a perpendicular street with buildings and houses about a mile away, and thats not an exaggeration.

    To the best of my knowledge, and I did some pretty extensive research on this, it all comes down to the type of tint you have. Metalized tint will effect signals, non-metalized tint wont, or wont in any significant way.

    I also have a Compustar Pro T11 security system, and the antenna is mounted in the upper part of my window, behind the tint, and I get unbelievable range with the remote.

    All of this has also been verified by the "tint pros" as well. tintdude.com is a good place to get this kind of information. So just make sure you dont get metalized tint and you'll be fine.

    --- Post updated ---

    I mean here is a video of my R3 picking up a LEO from WAYYY out, and he was on the other side of the off ramp. Windshield has 20% tint on it. Doesn't appear to effect the range.

    YouTube Link -----> watch
     

    Attached Files:

    Last edited: Sep 14, 2017
  11. kyle13

    kyle13 PSL +5 Intermediate User

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    My entire windshield is tinted in 20% 3M crystalline and I've seen no difference in detection with radar, ive mounted it low and ive mounted it high and ive seen no difference BUT Lidar on the other hand ive seen a huge difference, my R1 wont even alert to laser when directly targeted. Even with the V1 which we all know is very sensitive to laser showed a decrease in false alerts once the windshield was tinted. I will put together a small video today if i can find a radar source to test with.
     
  12. Deacon

    Deacon TXCTG Advanced User Premium Member

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    Y'all can't POSSIBLY have your windshields tinted to 20%. That's illegally dark for even side windows in areas that have any tint laws at all. That would be insane.
     
  13. Biohazardous

    Biohazardous Finding the loopholes Beginner User Premium Member

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    Probably mean 80%. Which is most factory tint on winddows.
     
  14. WNCmotard

    WNCmotard Premium Member General User Premium Member

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    I find it kind of funny that on a forum geared towards, eh, "circumventing" certain laws that anyone would complain about window tint. Here in NC, trucks, SUVs, and vans your front windshield and front two side windows have to meet the 35% light transmission requirement. Everything else you can spray paint, 5% limo tint, hell put up mini blinds if you want. Cars however all windows must be 35%, windshield strip included.

    I'm not picking at you Deacon, I just appreciate the comedic irony of it.
     
  15. Vortex

    Vortex Making Videos Administrator Premium Member

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    Thanks for all the discussion guys, but what I'm looking for, specifically, are some videos that clearly illustrate the issue. We know that some windshields are fine and some aren't and things can vary, but what I'd like are some videos showing, for example, the detector alerting 80% signal strength with nothing in the way and then dropping to 20% when behind the windshield and/or tint.
     
  16. The Pope

    The Pope Learning to Drive General User

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    Ok..... (yes this is my 1st post after becoming a member about 5 weeks ago, I've been too busy reading.....) ..... The only way that I see for a "True" and "Accurate" test is for one of our experts (yes this could be you Vortex) to invite a few folks over with their different vehicles with their different windshields & tint. For that said expert to mount their RD into each of these vehicles and to blast them with their equipment. This way the same signal strength, from the same source and distance would be identical for all of the testing. In short, if you're going to test something, please test it in a Controlled and Logical Manner.

    Ok........ crawling back into my dark corner where us RD newbies are supposed to be.........
     
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  17. Biohazardous

    Biohazardous Finding the loopholes Beginner User Premium Member

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    I tested my redline against the dots on my 07 f150 and noticed no difference on my own. I'll swing by my test spot on the way home and get a short video for you.
     
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  18. colloyd00

    colloyd00 vMax Advanced User Premium Member

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    You'd probably be surprised how much light comes through on the inside when side windows are at 20% :) It's not insane at all. But probably illegal.
     
  19. kyle13

    kyle13 PSL +5 Intermediate User

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    20% isnt bad at all, I have 5% + 15% on my side windows and 20% on the windshield and its great! the windows look black at all angles, but inside you can see out perfectly fine, at night it is a little tough in places with no street lights, but on the bmw it has the 360 degree monitoring for backing up or pulling into spots i just activate that and pull in easy peasy.

    --- Post updated ---

    How soon do you need the video? I have a known K band source (speed sign) and two identical cars (bmws) one with tinted windshield and one without it, i can use them to make a video and mount my r1 in the same place both tests and get a video comparing the difference if any. I wont be able to do it till this weekend though probably Sunday.
     
  20. spongebobradarpants

    spongebobradarpants currently in boating school Intermediate User

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    20% on your entire windshield? That's extremely unsafe. More so for everyone else on the road than for you...
     
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