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Pingers and Hydrophones  - Page 2 EmptyToday at 4:32 am by merriman

» Pinger 2 - Ultrasonic
Pingers and Hydrophones  - Page 2 EmptyTue Dec 03, 2019 2:32 pm by david f

» gear-splitter
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» The SubDriver becomes Modular
Pingers and Hydrophones  - Page 2 EmptyTue Nov 26, 2019 3:12 pm by merriman

» upgrading the SSY 1/96 ALFA kit
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» Beck's model marine
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» Beck’s model marine
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» Industrial display of COLLINS control-room
Pingers and Hydrophones  - Page 2 EmptyMon Nov 11, 2019 2:04 pm by merriman

» German Hecht XXVIIA in 1/17 scale
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    Pingers and Hydrophones

    profesorul
    profesorul
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    Posts : 384
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    Age : 55
    Location : Bucuresti, ROMANIA

    Pingers and Hydrophones  - Page 2 Empty 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
    david f
    david f
    AMS Treasurer

    Posts : 2054
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    Age : 69
    Location : Cumbria

    Pingers and Hydrophones  - Page 2 Empty 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 Sun Dec 08, 2019 8:36 am