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Thread: Beltronics STI radar problems.

  1. #16
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    Quote Originally Posted by Jdogg View Post
    Depends on what report you read.
    A fully independant one.
    Have a look at the "detector threads", the link is posted there.
    If you like arrows, stick with the V1.
    TOP QUOTE: “The problem with socialism is that sooner or later you run out of other people’s money.”

  2. #17
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    I have been using mine for around 3/4 of a year, not all the time, but I would say a decent amount of use.

    1 bike has it plugged into the front wiring loom, meaning it can only turn on when the bike is on, other is wired direct to battery. In both cases, I only plug the power cord in after the bike is running (in consideration to possible load on circuits). Its also lived in the plastic cover all its life (my arrangement means its sealed in, and I take the whole thing off).

    Vibration wise, its only been on IL4 bikes, so not sure about a v-twin... may find out in a few months

    Only issue for me is the HARD, its on the blink again, not wanting to flash...
    Quote Originally Posted by Jane Omorogbe from UK MSN on the KTM990SM
    It's barking mad and if it doesn't turn you into a complete loon within half an hour of cocking a leg over the lofty 875mm seat height, I'll eat my Arai.

  3. #18
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    same as me, mines il4. and the first one lasted about as long as yours did, but the last one has only been a matter of hours, i just plug it in when ever bike going or not.
    just got a new hard too, it was failing using batterys in half an hour.

  4. #19
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    Had mine for some time and not had any problems with the unit itself.
    But i had a problem with the hard wire plug that goes in to the unit. It would cause the volume to go up and down and make the unit keep beeping. What i found was the plug was corroding due to me washing the bike and the weather if i didnt have the radar on. So i gave it a spray with crc to keep it clean and cover it up when washing the bike. Had no problems snice.
    Tis a Yamahahahaha G. Just thrash it like you stole it. Gixxer 4 ever
    It really did look very unloved. Specially as it was next to the R1 that the whole crowd wanted to look at. Gixxer 4 ever

  5. #20
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    well....i now have a valentine, while they probley pick up police the same,i do prefur the beltronics because its undetectable, where the v1 isnt. but for me i guess there no point having the beltronics if it keeps failing after a few hours use.

  6. #21
    Quote Originally Posted by bully View Post
    well....i now have a valentine, while they probley pick up police the same,i do prefur the beltronics because its undetectable, where the v1 isnt. but for me i guess there no point having the beltronics if it keeps failing after a few hours use.
    i do prefur the beltronics because its undetectable

    Question...How could a Radar detector ? Be Detected ?

    It dosnt pump out any power ? ?...

    Crazy Steve..

  7. #22
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    somthing about leaking, thats why the bel has a magnesium case

  8. #23
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    It's something to do with the way the detector locates the signal. The way I understand it is that the detectors pick up interference on an oscillating frequency. Because they have to generate an oscillator, that in turn can be picked up.

    The undetectable RDs aren't actually 'undetectable' - they've just shifted the oscillation out of the RD detector's active range.

    Or something. I'm not entirely clear on this myself.

  9. #24
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    Quote Originally Posted by Salival View Post
    ...The undetectable RDs aren't actually 'undetectable' - they've just shifted the oscillation out of the RD detector's active range.....
    That was the old technology. The newer ones don't have to shift the local oscillator frequency because they are shielded. ie no LO RF escape.

    The Bel sti is fully shielded in a magnesium case, and is undectable.
    Time to ride

  10. #25
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    Quote Originally Posted by Salival View Post
    The undetectable RDs aren't actually 'undetectable' - they've just shifted the oscillation out of the RD detector's active range.
    This used to be the case with new detectors, they would change the frequency it output. Once the cops' guns were updated, they could be detected.

    The new crop of detectors (I believe there may be more than the STI now) are truly undetectable by all current technology, and they claim they won't ever be detectable...
    Quote Originally Posted by Jane Omorogbe from UK MSN on the KTM990SM
    It's barking mad and if it doesn't turn you into a complete loon within half an hour of cocking a leg over the lofty 875mm seat height, I'll eat my Arai.

  11. #26
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    Quote Originally Posted by Crazy Steve View Post
    Question...How could a Radar detector ? Be Detected ? It dosnt pump out any power ? ?...
    Yes it does. A signal coming FROM the radar detector local oscillator gets back OUT through the antenna. The cops can detect this signal.


    Quote Originally Posted by Gremlin View Post
    This used to be the case with new detectors, they would change the frequency it output. Once the cops' guns were updated, they could be detected.
    Yep.


    Quote Originally Posted by Gremlin View Post
    The new crop of detectors (I believe there may be more than the STI now) are truly undetectable by all current technology, and they claim they won't ever be detectable...
    So it seems this is true. This heralds a new era in radar detectors, and effectively defeats anti radar detector legislation.

    With the Beltronics STI Driver, BEL has apparently done the "impossible." They have managed to fabricate a superhetrodyne detector which does not produce LO leakage - typical of such detectors - which current RDDs (radar detector detectors) such as the STALCAR/SPECTRE rely upon to alert proximate detector usage.

    * source http://www.laserveil.com/beltronics/bel/sti-driver/

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  12. #27
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    Correct. That's why older detectors will often "go off" when passing another vehicle that has a radar detector. Your detector is acting as a detector detector.

    I believe that the detector works by generating a frequency that matches the radar units, and attempting to heterodyne that against the incoming frequency ( just like old superhet valve radios ). If they "match" then it knows that it has detected a radar unit.

    But of course that heterodyne signal is itself a radio transmission, which could be detected by a (very sensitive) detector. Bel have managed to shield the transmitter so that no signal escapes.
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  13. #28
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    yer the bel is great....if it keeps working, aparently v1 havent upgraded there insides for 20 years.

  14. #29
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    Quote Originally Posted by Ixion View Post
    I believe that the detector works by generating a frequency that matches the radar units, and attempting to heterodyne that against the incoming frequency ( just like old superhet valve radios ). If they "match" then it knows that it has detected a radar unit.
    A pretty close description of it. The incoming signal to be detected enters the horn antenna and then down a tunnel called a waveguide. In this tunnel they put a mixer diode and then fire a second locally-generated signal (called the Local Oscillator) into the same tunnel.



    The trouble is, that Local Oscillator is facing straight back out the waveguide and the antenna. A very efficient transmitter!

    The principle of operation is, the incoming signal mixes with the LO signal, and produces a third signal - the difference between them, at a much lower frequency than the incoming signal. They are doing this since a 34GHz signal is really really hard to process compared to a much much lower signal.

    Quote Originally Posted by Ixion View Post
    But of course that heterodyne signal is itself a radio transmission, which could be detected by a (very sensitive) detector.
    Again, pretty close. The heterodyne signal is the difference, or the signal that goes on for further processing.


    Quote Originally Posted by Ixion View Post
    Bel have managed to shield the transmitter so that no signal escapes.
    Actually, not quite. They are using a whole new technology, getting away from the old cavity/waveguide mixer system, and probably toward a printed-circuit stripline system using modern microwave integrated circuits. Why they haven't done this long ago baffles me, since MMICs have been cheaply available for some 20 years.

    Anyway, by default the LO on these cannot get back past the mixer to the antenna - its quite a different technology.

    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.

  15. #30
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    Quote Originally Posted by Ixion View Post
    Correct. That's why older detectors will often "go off" when passing another vehicle that has a radar detector. Your detector is acting as a detector detector.
    So that`s it.
    My trusty Escort X50 sometimes sounds off, I slow back to 100kph, and ... nothing, just some random Joe Public car or truck...
    I`ve been thinking of trading up to Escorts latest, but my ol` X50 just keeps on doing it`s thang and saving my butt!!
    Let the good times roll

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