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    Pingers and Hydrophones

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    profesorul
    Guest

    Posts : 384
    Join date : 2011-07-03
    Age : 53
    Location : Bucuresti, ROMANIA

    Re: Pingers and Hydrophones

    Post  profesorul on Sun Mar 22, 2015 8:46 pm

    I'm interested too .
    I think I steel have some were a Walkman tape cassette with his original helmet ! .

    Yap , I know I'm a sentimental guy !.

    MARIUS
    avatar
    david f
    AMS Treasurer

    Posts : 1940
    Join date : 2010-11-10
    Age : 67
    Location : Cumbria

    Re: Pingers and Hydrophones

    Post  david f on Mon Mar 23, 2015 2:36 pm

    Just try it. You are not going to do any damage!

    The more hydrophones floating about the better (See my other post today!)

    Piezo elements are fairly "high impedance" but a lot of reasonably sensitive audio amplifiers will do the trick.

    The sort of sensitivity you are looking for (with the hydrophone element on a table) lightly tapping or scraping the table should give a noise over the headphones. (Headphones are always better, for some reason.)

    David

      Current date/time is Tue Feb 20, 2018 9:54 am