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Could this device be built?

Discussion in 'Electronic Repair' started by Spob, Aug 19, 2007.

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  1. Spob

    Spob Guest

    Sitting at a gas station as some backwards baseball cap and saggass
    britches wearing kid parks in the fire zone in front of the store with
    some fukdamuhfukinniggahbeyotch crap blasting out of his truck for
    everyone's entertainment, got me to thinking.

    Would it be possible to build a gizmo that could be surreptitiously
    aimed at the offending stereo system to fry some crucial components?
    It would have to be able to do it on a pretty localized basis without
    causing damage to the person aiming the gizmo or innocent bystanders
    or their car's electronics. Whether it would fry any additional
    components of said target punk's car isn't of great concern.

    Call it The Rapper Zapper.

    Just wonderin'.

  2. Hi!

    I don't know about building a dedicated device, nor am I sure I like the
    aspect of damaging something that isn't mine, but...I know what you're

    If you were close enough, and they happened to be listening to over-the-air
    FM radio, you could try a low power FM transmitter. Some of them do have
    surprisingly good range and can cover/distort an existing station when close
    enough to the receiver. I've got one that seems to be able to go about 30
    feet or so.

    Then there is the direct (and bold) approach--walk over, reach in through
    the window and turn the thing off. Or if you're feeling vindictive, pull a
    small mallet out of your pocket and thoroughly bash in the head unit. But I
    didn't say that. ;-)

  3. This would be awesome!!! But why shouldn't it be aimed at the person too?
  4. In the 80's there were lots of people in my neighborhood with illegal
    linear amplifiers on their CB radios. When they would key up these
    unregulated, unshielded transmitter would put out harmonics on all the
    radio and TV stations within a mile or so.
    This loud annoying buzz would probably damage the speakers and amps of
    such a system.
    This would definitely be illegal in the USA and probably other countries
    but it would do the trick.
  5. James Sweet

    James Sweet Guest

    No chance someone like that is listening to broadcast radio. There's nothing
    covert you could build that wouldn't damage people too.
  6. Donald

    Donald Guest

  7. msg

    msg Guest

    Spob wrote:


    I assume many high power radar site operators have pet stories to
    tell, but I remember one that deserves a retelling:

    There was a Merritt Island cop who set up a speed trap on a road perhaps
    a mile downroad from a powerful range tracking radar station. The operators
    were not amused with the daily harassment from him and decided to make his
    life a little more interesting and theirs a little less hassled. Siting the
    cop's squad car in the telescoping aiming site of the radar dish, one of the
    operators briefly keyed a pulse train and watched. Soon the car left but
    returned the next day. Again the operator sited and pulsed the car and again
    it left. After the third day it did not return. I do not know if the tracking
    radar and cop's radar gun were on the same band, however I do know that 1MW of
    microwaves was sufficiently nondiscriminatory at the receiving end to burn out
    its front end.



  8. Simple: Their mind is already fried.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida

  9. How about, "MC Mute".... that should confuse the enemy. ;-)

  10. Bullshit. The antennas rotate, but the elevation is fixed. There is
    no telescope on any RADAR Antenna, and no way to "Siting the cop's squad
    car". There are no keying of brief pulses, the system works with a
    steady stream of pulsed RF, and measuring the reflected signals. I did
    some RADAR work in the US Army, and there was a pair of 2 MW pulsed
    RADAR transmitters in our building. You are spreading an urban legend,
    with enough holes to sink the Titanic (again). If the RADAR equipment
    in a cruiser WAS damaged, it was because the idiot cop was too close to
    the RADAR site, and it was a coincidence. Even this is hard to believe,
    because RADAR sites are usually well inside a fenced area, far from
    civilian areas, and high enough to clear close in ground clutter. The
    high gain, highly directional antennas do not radiate enough near field
    RF to do any damage, unless the cruiser was on very high a hilltop, and
    less than a 1/4 mile from the RADAR site.

    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
  11. msg

    msg Guest

    I beg to differ. Our organization had two AN/MPQ-10A mortar tracking radars
    (250kW) which had telescopic sites, could be manually aimed and manually

    The above story was told by an operator our Apollo 12 task force got to know.


  12. (snip)

    Could it be built? Certainly. I can think of half a dozen
    focused energy technologies that are within present human
    technical capability. They are usually referred to as weapons.

    Would you be able to afford it? Probably not. Would it be
    legal to own and operate? Almost certainly not.
  13. Ken Weitzel

    Ken Weitzel Guest


    I bet it was sufficiently nondiscriminatory at the receiving end to
    burn out the cop's front end, too.

    Take care.

  14. Bob

    Bob Guest

  15. D from BC

    D from BC Guest

    There's not much on this page for a reason....

    D from BC
  16. Guest

    US Army Nike had a missle track, target track and a target range radar,
    all of which were steerable in both azimuth and elevation.

    Since Nike radars were normally deployed on the highest hill around,
    the MTR, TTR, and TRR could all be depressed below the horizon.

    All of them were boresighted and aligned by bolting on the telescope,
    going to manual control, and aiming them with a box that hung by a strap
    around your neck at the alignment target about a quarter mile away.

    We used to regularly break the MP's speed radar at Ft Bliss until the
    MP's wised up and made sure there was a metal building between them
    and us.

    We could wipe them out to about a mile away and jam them a lot
    farther than that.

    This was the late 60's.

    While I was in Korea, a spook detachment set up a listening post
    down the hill from us.

    They were a bunch of jerks and pissed off everyone, so I gave their
    equipment the same treatment.

    They moved to the next mountain after they got their gear fixed.

    Tell me more about your toy radars.
  17. Dear Leader

    Dear Leader Guest

  18. Guy Macon

    Guy Macon Guest

    Bass-seeking missle. Someone here needs to invent
    a bass-seeking missle. I will order at least a dozen.

    <SFX: Car playing really loud rap music at 3 AM:>

    Boom Budda Boom Budda Boom Budda *BLAM!*
  19. Benj

    Benj Guest

    Yes, "fry". Did you guys see the 60 minutes piece some time ago about
    some "inventor" who had a device to "fry" auto computers. Details were
    sparce, but clearly seemed to be some kind of cross between a tesla
    coil and a microwave pulser. He stopped a running car at some
    distance (cheated by having hood up).

    The point is that any solid state device always has a bunch of semi-
    conductors that follow the rule: Semiconductor parts make better fuses
    than fuses! Usually most solid state circuit boards have some of
    these are low voltage parts that can't take much emi.

    I wouldn't be surprised if cops had emi car stoppers right now. Sure
    beats a 100 MPH chase or those tire spikes that could send a 100 MPH
    car into a neighborhood house. I have also heard rumors that all
    modern car computers have "secret" codes that can be transmitted into
    them that stops them. Wouldn't surprise me a bit.
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