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» Brand NEW Class of Submarine from Germany to Israel.
Pingers and Hydrophones - Page 2 EmptyYesterday at 9:33 pm by gp100man

» WW2 mini sub build
Pingers and Hydrophones - Page 2 EmptySun Jan 23, 2022 5:23 pm by SimonH

»  Acoustic based Remote
Pingers and Hydrophones - Page 2 EmptySun Jan 23, 2022 3:00 pm by redboat219

» Radio ideas -27Mhz
Pingers and Hydrophones - Page 2 EmptySat Jan 22, 2022 3:57 pm by geofrancis

»  Depth Sensor + LoRa telemetry
Pingers and Hydrophones - Page 2 EmptySat Jan 22, 2022 3:32 pm by geofrancis

» New Information on Israel's 3rd Dolphin2 submarine.
Pingers and Hydrophones - Page 2 EmptySat Jan 22, 2022 6:10 am by gp100man

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Pingers and Hydrophones - Page 2 EmptyThu Jan 20, 2022 11:36 am by gp100man

» Radio RSSI depth controller
Pingers and Hydrophones - Page 2 EmptySat Jan 15, 2022 11:30 am by geofrancis

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3 posters

    Pingers and Hydrophones

    profesorul
    profesorul
    profesorul
    Guest


    Posts : 386
    Join date : 2011-07-03
    Age : 57
    Location : Bucuresti, ROMANIA
    • Post n°26

    Pingers and Hydrophones - Page 2 Empty Re: Pingers and Hydrophones

    Post  profesorul 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
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    david f
    david f
    david f
    AMS Treasurer


    Posts : 2216
    Join date : 2010-11-10
    Age : 71
    Location : Cumbria
    • Post n°27

    Pingers and Hydrophones - Page 2 Empty Re: Pingers and Hydrophones

    Post  david f 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
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      Current date/time is Tue Jan 25, 2022 1:08 am