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    Hello to all:
    I wanted to know if somebody can help me; it is that they took charge me the production of a portico to detect weapons in a school and I don't have experience in this. Do only manufacture coils of 40 cm. of diameter and now I do have to also manufacture not two of 20 cm. x 200 cm. you that principles use the porticos, if they are PI or VLF or inductive balance, can somebody seek advice???????
    Thank you Carlos

  • #2
    Re: gun search

    Hi Carlos,

    I've never looked inside one of those walk-through units, but I expect they are mostly pulse induction, probably use multiple coils that are stacked on each side instead of one oblong coil. Garret has a web page that describes their walkthroughs, maybe you can glean some useful info from it. There are some downloadable PDF's with specs. Another page is at TreasureNet.

    - Carl

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