Page 4 of 4 FirstFirst ... 234
Results 46 to 59 of 59

Thread: Radar detectors. Do they work?

  1. #46
    Join Date
    27th November 2006 - 19:32
    Bike
    07 GIXXER 75OOOHHHH
    Location
    Taranak/Wanganui areasi
    Posts
    2,933
    Bel RX 65 was good till some arse wipe flogged it last guy fawks night,grabbed the RX55 and is as good,these are all in the car though.

    Cobra cheapo is reasonable,but our old whistler still goes well.Both not as good as the bel,but not the same price either.
    Hello officer put it on my tab

    Don't steal the government hates competition.

  2. #47
    Join Date
    19th April 2008 - 14:26
    Bike
    2013 Victory Hammer 8 Ball
    Location
    Whakaahurangi
    Posts
    640
    Quote Originally Posted by Boob Johnson View Post
    Yes they work.


    You get what you pay for


    1) Bel STi

    2) Valentine One

    3) Escort 8500


    In that order, anything else is an expensive plastic box with pretty lights.........that won't save you from the not so pretty lights

    +1

    What boob said,in that order.
    Got an sti,and it's saved my arse several times now.

    In an independent test i found,they rated the Bel' STI 1st,in radar detection,And the Valentine V1 next,But they reckon Escort 8500 is VERY similar to the STI.



    You're probably already aware,but i'll tell you anyway,that as good as a radar detector is,you're not bulletproof against getting caught by cops.
    They don't have their radar guns on all the time.They turn them on and off.

    If there's traffic in front of you,you'll have a better chance at picking them up with a fair bit of warning,as they use the radar on them.But if you're on a lonely highway,you might find that you are the first vehicle they zone in on,and that can be too late.

    Also,some radar detectors are not good at picking up laser,but all in all,you're still WAY better off with one.

  3. #48
    Join Date
    13th April 2009 - 11:31
    Bike
    91, Honda, CBR600 f2
    Location
    Christchurch
    Posts
    49
    Quote Originally Posted by Mikkel View Post
    Laser guns are range finders operating in the micro-wave part of the electromagnetic spectrum.

    Radars on the other hand operate based on the doppler shift for a reflected beam. There's no viable way to jam a doppler radar.
    So you can jam lasers but not radars?

    what is the break down on what cops use? mostly lasers??

  4. #49
    Join Date
    3rd January 2008 - 07:31
    Bike
    2007 Suzuki DL 650
    Location
    North Otago
    Posts
    420
    Quote Originally Posted by NZ CBR View Post
    So you can jam lasers but not radars?

    what is the break down on what cops use? mostly lasers??
    Lasers can only be used stationary, so the cars all have radar.

  5. #50
    Join Date
    8th October 2007 - 14:58
    Bike
    Loud and hoony
    Location
    Now
    Posts
    3,215
    Quote Originally Posted by NZ CBR View Post
    So you can jam lasers but not radars?

    what is the break down on what cops use? mostly lasers??
    I don't know the exact figures - but there will be at least 10 radars to every laser, 100 radars to every laser is more likely. I've seen a laser gun being used less than 5 times - couldn't begin to put a number on the times I've passed a police car with an active radar.
    It is preferential to refrain from the utilisation of grandiose verbiage in the circumstance that your intellectualisation can be expressed using comparatively simplistic lexicological entities. (...such as the word fuck.)

    Remember your humanity, and forget the rest. - Joseph Rotblat

  6. #51
    Join Date
    13th April 2009 - 11:31
    Bike
    91, Honda, CBR600 f2
    Location
    Christchurch
    Posts
    49
    Cheers,

    Think ill just play around with my Rocky mt I was givn, dont expect much from it by the sounds but dont have 1/2 a grand to spend. yet, Ill have to do some more paper runs!!

  7. #52
    Join Date
    14th March 2007 - 20:11
    Bike
    bandit 1200s
    Location
    Hamilton
    Posts
    1,208
    Quote Originally Posted by MD View Post
    Brenda is a Cobra 9440.
    Quote Originally Posted by Ragingrob View Post
    Brenda sure does sound interesting.... There are a few about trademe going cheap cheap but only one 9440 right now, I wonder how the other models of this brand stack up.
    I tried to buy the one on Trademe - out of stock! He's offered me a 9940 for an extra $25 - anyone know if it's a good model
    Lifes Just one big ride - buckle up or hang on

  8. #53
    Join Date
    3rd January 2008 - 07:31
    Bike
    2007 Suzuki DL 650
    Location
    North Otago
    Posts
    420
    Quote Originally Posted by smoky View Post
    I tried to buy the one on Trademe - out of stock! He's offered me a 9940 for an extra $25 - anyone know if it's a good model

    Dunno but make sure it has an external speaker socket

  9. #54
    Join Date
    14th March 2007 - 20:11
    Bike
    bandit 1200s
    Location
    Hamilton
    Posts
    1,208

    should be sweet

    Quote Originally Posted by TimeOut View Post
    Dunno but make sure it has an external speaker socket
    yep - he said it had all the same features and more than the 9440
    He said it's the model he uses, and he rides a CBR250 - so he can't be a bad bloke
    Lifes Just one big ride - buckle up or hang on

  10. #55
    Join Date
    12th September 2004 - 17:40
    Bike
    09 GSX1400.
    Location
    Horowhenua NZ
    Posts
    3,896
    Quote Originally Posted by MD View Post
    Clear off! I found her first. I turned X band on just to hear Brenda's sweet seductive voice saying..."X Alert"

    Trevor hey. Not sure I like the sound of Trevor. Sounds like he might have eyes for my Brenda's curves.


    Yeah I tested this. It's K band now. Personally I see no need for the radar in town. It's just an open road thing for me, especially when wanting to blast past slower traffic.

    Brenda is a Cobra 9440.
    yep MD, did a test this morn on a camera van at Plimmerton, parked next to him and proceeded to switch on K band. (took a matter of seconds on the
    V1!!) Its going to be a pain in the city but hey you never know where they pop up.

    You'd never go hungry with Nigella Gaz.
    If it weren't for flashbacks...I'd have no memory at all..

  11. #56
    Join Date
    18th February 2008 - 17:34
    Bike
    Zooks 85 GS1100G and 84 GSX1100E
    Location
    North Shore, New Zealand
    Posts
    1,082
    Quote Originally Posted by Swoop View Post
    I've been preaching this for ages around here. Those who will not listen.....$

    They do not cost anywhere near that amount. Where did you get told that price for an STi?

    http://www.radar2go.co.nz/index.php?...products_id=10

    and trademe.

    If you can get them cheaper, please advise
    Political correctness: a doctrine which holds forth the proposition that it is entirely possible to pick up a turd from the clean end.

  12. #57
    Join Date
    1st November 2005 - 08:18
    Bike
    F-117.
    Location
    Banana Republic of NZ
    Posts
    7,048
    Quote Originally Posted by flyingcrocodile46 View Post
    http://www.radar2go.co.nz/index.php?...products_id=10

    and trademe.

    If you can get them cheaper, please advise
    You are on the North Shore! Parallel Imported on Constellation Dr.
    Shitloads cheaper.
    TOP QUOTE: “The problem with socialism is that sooner or later you run out of other people’s money.”

  13. #58
    Join Date
    3rd June 2005 - 23:06
    Bike
    nun
    Location
    In cloud cookoo land
    Posts
    4,834
    Quote Originally Posted by NZ CBR View Post
    ....
    So do they work and if so what do I need to look for??
    No, they dont work. Look out for pukekos

  14. #59
    Join Date
    5th February 2008 - 13:07
    Bike
    2006 Hyosung GT650R
    Location
    BOP
    Posts
    7,141
    Quote Originally Posted by Mikkel View Post
    Laser guns are range finders operating in the micro-wave part of the electromagnetic spectrum. They measure the distance to an object about once every millisecond, calculate the difference and then return the speed. This is why it is possible to design a laser jammer - 1 ms is plenty of time for good electronics to establish the incoming frequency and start emitting a very noisy background which drowns out the laser's own signal.
    Er, almost. To be precise ;

    /pedant Laser guns use an optical laser operating in the micrometer (light) part of the electromagnetic spectrum. It's not radio waves, or microwave radiation. I would be very surprised if LIDAR jammers actually measured the incoming energies' frequency and took active steps against it. I think you will find they simply broadcast a bright modulated light "blinder" on or about the same light wavelength, effectively burying the microscopic laser reflection in a sea of fog.

    Quote Originally Posted by Mikkel View Post
    Radars on the other hand operate based on the doppler shift for a reflected beam. There's no viable way to jam a doppler radar.
    Correct, but they can be jammed once you know the transmitting frequency, thusly ;

    The stalkers' digital displays can only indicate two speeds - the primary target speed, and the maximum speed. These two "speeds" are two doppler reflections (radio frequency signals), so we need to simulate these, or at least mask the one the radar unit should be displaying. The easy way seems to be to (over)modulate a microwave source with a square wave signal of about 1KHz. This should fill the bandspace with multiple targets spaced 1KHz apart, making far more targets than the operator is capable of legally* resolving. Note that it will not conceal your high speed (the stalker will quite likely still pick you out as the highest speed target) but his audio will so absurdly cluttered that either the operator or the stalker will be well into "WTF" mode. I do not think the operator will trust his machine with this much crap coming out of the speaker.

    *The judge will raise an eyebrow at the officers' description of the horribly cluttered tone. While the instrument might be content, the judge will not. In case the officer bare-faced lies to the judge and says he had "clean tone" on you, all you do is ask how that could be, since you were jamming him with a wideband squarewave signal, and indicate to the judge that his summary description of the observed tone is infeasible considering the conditions, and watch him suddenly "remember".

    Fun fun fun!

    edit: disclaimer: I don't advocate speeding everywhere. It's dangerous. Your family (especially your mum and your lovely daughter) will cry when you are dead. Don't do it.

    Steve
    "I am a licenced motorcycle instructor, I agree with dangerousbastard, no point in repeating what he said."
    "read what Steve says. He's right."
    "What Steve said pretty much summed it up."
    "I did axactly as you said and it worked...!!"
    "Wow, Great advise there DB."
    WTB: Hyosung bikes or going or not.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

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