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  1. #1
    Power User
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    Default Build your own radar detector

    Hey folks, I know others have inquired for novilty purposes, I ran across this web site just by chance, thought it was interesting, offering a bit as far as schematics, it seems like a starting point for those that are interested. For the majority most of this stuff is over my head, stuff that I have a faint knowledge back from school, like I said, interesting but don't know how far this would take someone, let alone testing such a device in order to calibrate it would require some premium equipment, hmmm, wonder if they have any do it yourself schematics on that stuff.

    Economy Radar Detector

    The original site seems to come from here...

    Electronics Lab

  2. #2
    Power User
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    Default

    After thought, it would make for a great throw away detector in illegal areas, as well as a great story to tell the cop, yeah I just built this thing for fun and was playing with it, could you imagine the officers face holding a bunch of hand assembled electronics setting off his spectre, LOL.


  3. #3
    Yoda of Radar
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    Default

    Are you going to build one?

  4. #4
    Radar Fanatic
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    ATLANTA. Im never leaving.
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    Default

    thanks for the website, i might just try it this summer when i have time. i love building stuff like that.

  5. #5
    Radar Fanatic
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    Default

    I built the rainbow electronics kit just for kicks. Tuned for K-band it will just about start making noise as I park directly in front of the drug store entrance. I think it really needs an aluminum foil horn and waveguide.

  6. #6
    Advanced Member
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    Michigan
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    Default

    Quote Originally Posted by brick
    I built the rainbow electronics kit just for kicks. Tuned for K-band it will just about start making noise as I park directly in front of the drug store entrance. I think it really needs an aluminum foil horn and waveguide.
    I bought that kit a couple of years ago, but never got around to building it

  7. #7
    Lead Foot
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    Jul 2005
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    K-55 land
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    Default

    Here's an approach:
    Oct 30 1989 EE Times:
    ----------------------------------------*----
    - The Escort and the Solo are the first consumer units to come loaded with a
    DSP chip, in this case the Motorola 56000, which extends their range beyond
    that possible with conventional RF circuitry.


    - Surface-acoustic wave filters boost selectivity, and high-efficiency GaAlAs
    LEDs make for displays that are easier to read under ambient lighting.


    - Solo draws just 2% of the power of traditional radar detectors... Most of
    the power saving comes from substituting a GaAs FET front-end oscillator for
    the traditional, power-hungry, Gunn Diodes used in rival systems.


    - The miniature unit (Solo) packs seven SMT-studded cards and a flexible board
    into a 5.5-ounce magnesium case the measures 2.3 X 0.78 X 4.55 inches.


    - Escort is sensitive to -121 dBm/square centimeter (X band) and -114 dBm/
    square centimeter (K band), about 8 dBm better for either band than comparable
    products. That translates into a sensitivity roughly seven times that of
    rivals.


    - ...getting ultrasensitive RF componentry to work just an inch away from a
    noisy 20-Mhz DSP was no easy task. Software simulation of critical microwave
    RF elements, signal processing and digital power management provided the
    answer.


    - Engineers developed software algorithms specifically to boost weak Doppler
    radar signals above the noise floor without handicapping new-found sensitivity
    with too many false alarms.


    - Once the code was tried and roadtested, company engineers handed it over to
    Motorola so it could be mask-ROMed into DSP. Motorola's 10.25-Mips, 78-pin
    chip looks at each traffic radar contact over 50,000 times each second,
    picking out Doppler radar signals from among other RF components


    - Copper-wire Faraday cages are used to ensure RF shielding during alignment
    and test before an extensive burn-in is performed to ensure operation over the
    harsh -5 Faren. to +165 Faren. environment encountered inside a car.

  8. #8
    Lead Foot
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    Dec 2005
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    Austin,TX
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    Default

    Im going to take a shot in the dark and say he doesnt have nor want to put the big $$ into that approach...

    Once the code was tried and roadtested, company engineers handed it over to
    Motorola so it could be mask-ROMed into DSP. Motorola's 10.25-Mips, 78-pin
    chip looks at each traffic radar contact over 50,000 times each second,
    picking out Doppler radar signals from among other RF components
    This part alone usually requires very large minimum quantities to start becoming cost effective...

 

 

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