Page 1 of 4 123 ... LastLast
Results 1 to 10 of 36
  1. #1
    Good Citizen
    Join Date
    Sep 2006
    Location
    Chicago
    Posts
    97

    Default Why is 35.5 GHz so hard to detect?

    Why is this frequency so hard to detect? My 8500 x50 seems to do do a pretty good job of doing so!

    Thanks!

  2. #2
    Old Timer
    Join Date
    Aug 2006
    Location
    Orlando, FL
    Posts
    8,881

    Default Re: Why is 35.5 GHz so hard to detect?

    Not sure, entirely. I think there was some discussion about it having to do with filtering from the RD companies to deal with the leaky Cobra radar detectors, but I'm not sure.

    Straight on, it's not that bad, but it's pretty bad around curves.

  3. #3
    Radar Fanatic
    Join Date
    Jan 2008
    Location
    Nebraska
    Posts
    2,216

    Default Re: Why is 35.5 GHz so hard to detect?

    Lower powered radar guns and a narrower radar cone emitted from the gun.

  4. #4
    Old Timer
    Join Date
    Aug 2006
    Location
    Orlando, FL
    Posts
    8,881

    Default Re: Why is 35.5 GHz so hard to detect?

    Is it that much more narrow than 34.7?

  5. #5
    Power User
    Join Date
    Jan 2005
    Posts
    3,724

    Default Re: Why is 35.5 GHz so hard to detect?

    The Valentine One doesn't have a problem with it.

    V1 Report Card


    GOL Radar Detector Test - August 2005

    Winner of 35.5 Ka band detection test (tie)


    GOL Radar Detector Test - October 2006

    Winner of 35.5 Ka band detection test


    GOL Radar Detector Test - March 2007

    Winner of 35.5 Ka band detection test (SR7 was not mounted under the bumper or inside the grill as stated in installation manual)


    GOL Radar Detector Test - August 2007

    Winner of 35.5 Ka band detection test
    Winner of forward facing 35.5 Ka band detection test
    All four of the Valentine One radar detectors alerted to instant-on 35.5 Ka band radar 100% of the time one mile away from the radar gun.

  6. #6
    Old Timer
    Join Date
    Aug 2006
    Location
    Orlando, FL
    Posts
    8,881

    Default Re: Why is 35.5 GHz so hard to detect?

    As I said before, straight on, 35.5 isn't much of a problem. It's around curves, or "off axis," where the problems come out. Yes, even for the V1.


  7. #7
    Stealthed Like a B-2
    Join Date
    Dec 2007
    Location
    South Eastern, VA
    Posts
    1,813

    Default Re: Why is 35.5 GHz so hard to detect?

    Quote Originally Posted by ELVATO View Post
    As I said before, straight on, 35.5 isn't much of a problem. It's around curves, or "off axis," where the problems come out. Yes, even for the V1.

    xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx2222222222 2

    Thats why when I say I have problems with it its on rural highways with even slight curves or back roads. Anything rural in essense

    On the interstate It'll pick it up fine all the time no matter what, a lot of the highway around here it does to unless on northern 17.

    I have the STI driver and its much better than the V1 at around the curve 35.5 believe me, I've tested it myself. I actually was going to get a V1 as a highway detector a while back and used a friends V1 for 3 days. Though I hated it in the urban part of YT I wasn't using it for that and on the highway it did pretty well. Long range encounters but after going to northern 17 and testing it for about a total of 4-5 hours I had 3 encounters where I did not pick up the I/O until I was very very close to the LEO (1 alert, got lucky with another car in front of me about 1/4 mile up) and 2 full blast I/O encounters where It missed the alert completly. So I decided to not get it. Interstate it was great, northern 17 where I need a detector that can pick the signals up from far and good at off-axis encounters and the v1 nor the STI do that.

    The beam is narrow and its low powered characteristics make it a very hard gun to detect. The signal I think is present but theirs not a lot of it, and Whistlers patent that can stop the process if it thinks a signal is present I think would greatly increase detection on this band.

  8. #8
    Radar Fanatic
    Join Date
    Apr 2005
    Location
    Indianapolis, IN
    Posts
    2,817

    Default Re: Why is 35.5 GHz so hard to detect?

    It may have something to do with the design of the Ka band RF circuit design used in these RDs. It is sweeping such a wide band that certain compromises are being made. The antenna design could also account for the differences.

    The higher frequency signals will diffract less around curves and over hills but I would not expect that to account for the entire difference.

    GTO_04

  9. #9
    Old Timer
    Join Date
    Apr 2007
    Location
    New Jersey
    Posts
    6,771

    Default Re: Why is 35.5 GHz so hard to detect?

    x2 YTCD STi is rele good with 35.5 i have seen for myself as well

  10. #10
    Old Timer
    Join Date
    Aug 2006
    Location
    Orlando, FL
    Posts
    8,881

    Default Re: Why is 35.5 GHz so hard to detect?

    I'm still not sure about my STI. The couple encounters I've had have been a little iffy, especially one encounter where it alerted just before I started seeing the headlights of the police truck. Granted, he could have turned it on just before he rounded the curve. I don't know, I'll have to see.

 

 

Similar Threads

  1. Did I detect IO?
    By gig103 in forum Valentine One
    Replies: 6
    Last Post: 07-07-2008, 03:07 PM
  2. Replies: 7
    Last Post: 05-17-2007, 10:40 AM
  3. Hard to detect motorcycles unless close
    By YZFR1 in forum Motorcycle Protection
    Replies: 15
    Last Post: 09-21-2005, 06:21 AM
  4. What does POP detect?
    By ryanfx in forum Radar Detectors - General
    Replies: 3
    Last Post: 09-01-2005, 11:57 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •