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Thanks for notification of events and keep 'em coming!

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, Papplewick pumping station, Nottingham, 21,22 April
Bournville June 2nd 2019, 10am
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. ,

Norwich MBC Submariners joint Model Boat weekend - 27/28th July

Grantham MBC, SUN, AUG 11 AT 10 AM
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.Model Boat Convention (Exhibition), 24,25 August

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. Bournville Dive-In (2) MBC, 15th September

,,,,

Barrow in Furness MBC regatta and submarine event, Sunday 22nd Sept 2019,10am

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    Pingers and Hydrophones

    profesorul
    profesorul
    Guest

    Posts : 384
    Join date : 2011-07-03
    Age : 54
    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 : 2027
    Join date : 2010-11-10
    Age : 68
    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 Tue Apr 23, 2019 5:17 am