Radar and rain?

Discussion in 'General Radar Detector Discussion' started by crabu2, Nov 14, 2017.

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  1. crabu2

    crabu2 Learning to Fly Beginner User

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    Not sure if this question goes here or somewhere else, so if it needs moving, please do.

    Since getting the R3, I've noticed that whenever there's even a hint of rain, it seems no LEO runs radar. So my question is this... Is it because the LEO doesn't want to pull someone over to ticket in the weather, or is there something about radar that doesn't work well when there's water in the air?

    If I had to guess, I'm going to the LEO doesn't want to get out of his car.. Still I'm wondering if there's something about weather effecting radar that might be causing the LEO's inaction.
     
  2. chakeubeam

    chakeubeam To Be Determined... Advanced User Manufacturer/Vendor Premium Member

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    Rain can decrease the range of any radar detector. That being said the reason your probably not seeing any radar is because most cops are too busy going from accident to accident that traffic patrol isnt that major of a concern.
     
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  3. InsipidMonkey

    InsipidMonkey Premium Member Intermediate User Premium Member

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    I assume it's that they don't want to stand out in the rain.

    Radar works fine in the rain. K band is somewhat attenuated since the frequency (~24.15GHz) is close to a peak for water absorption, but Ka band is less affected.

    We had a discussion of K vs Ka here a little while ago that covers some of this: https://www.rdforum.org/index.php?threads/64434/
     
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  4. drtoddw

    drtoddw Überschreitung der Höchstgeshwindigkeit Advanced User Premium Member

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    Just to add...rain may affect range somewhat, but will not affect accuracy. Same can be said for using LASER in the rain. In most cases it is exactly as InsipidMonkey said, cops are human and don't like to get wet
     
  5. NPark

    NPark -NNJCTG- Rollin', windows down, music up Advanced User Premium Member

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    I personally, in NNJ, don't find LEO's in the rain that often...and my area locally is HEAVILY patrolled. I'd say it's the rain factor. They all have brand new Stalker's and MPH guns, so it's certainly not a "range" argument on their end.

    However, from our end(The RD) user, @OpenRoad did the stew test in heavy rain with the RL-O. Crazy how BAD it did. Range was cut down DRAMATICALLY. Would love to see it in the rain with the R's.


    Sent from my iPhone using Tapatalk
     
  6. Up All Night

    Up All Night Premium Member Beginner User Premium Member

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    Well, Some of Them... are Human.


    Posted from my iPhone using the RDF Mobile App!
     
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  7. drtoddw

    drtoddw Überschreitung der Höchstgeshwindigkeit Advanced User Premium Member

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    LOL I did say "human", not "humane"
     
  8. OpenRoad

    OpenRoad Must go faster Advanced User Premium Member

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    In that test, it could have been a sheet of water/rain on the front of the speed sign, diminishing the output power. Water absorbs radar so you're not going to get 4,5,6 mile detection. That said, if it is raining, you should be driving near PSL anyway.
     
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