We (don’t) be jammin’

Hailing frequencies open… Forums Sci Minus Fi Tech We (don’t) be jammin’

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    What…the hell?? [LINK]

    An electronic signal-jamming device was located at a residence in Morgan Hill and disabled, following notification from Santa Clara County’s emergency communications department that the device was “disrupting, impeding and interfering with the transmission of communications over the Santa Clara County public safety radio frequency,” according to Morgan Hill police.

    The county’s emergency communications team was able to pinpoint the approximate location of the illegal device by utilizing sophisticated radio frequency testing equipment, which determined that the device was located in a residence at Llagas Road and Christeph Drive.

    After a search warrant was granted for the residence, officers entered and found two large electronic signal jamming devices. While inside the residence, the officers noted that their police radios and cellular phones were not working. County emergency communications technicians immediately disabled the jamming device, at which time the police radios and cellular phones became operable.

    So many questions.
    Were they planning something else of which this was just a part?
    The photo accompanying the linked article shows a jamming device that’s obviously produced by someone else and bought/sold, not something that whoever was in that house had built themselves. Why is something like this even available? What legitimate use is there for it?

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    Well, who ever is building the jamming equipment is either doing it illegally or making it outside the US. According to this article, “Federal law prohibits the operation, marketing, or sale of any type of jamming equipment that interferes with authorized radio communications, including cellular and Personal Communication Services (PCS), police radar, and Global Positioning Systems (GPS).”

    One would think any legitimate Ham radio could be used as a jammer by replacing the microphone with a device that emits white noise or any other kind of noise that is annoying.

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    FCC Jammer Enforcement

    You are looking at a minimum $22k fine.

    “All parts should go together without forcing. You must remember that the parts you are reassembling were disassembled by you. Therefore, if you can’t get them together again, there must be a reason. By all means, do not use a hammer.” —IBM Manual, 1925

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