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R/C Submarine modelers

Re: Emergency locater

Postby raalst » Sun Mar 10, 2013 3:26 pm

another approach on building a hydrophone is shown here

But what I found is that often a plain PC microphone (a socalled electret)
works best of all. just wrap a balloon (or a condom) around the mic.
And add some weight, e.g. a few steel nuts.

Ronald van Aalst

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Re: Emergency locater

Postby Robert F. » Sun Mar 10, 2013 5:26 pm

Thanks,Andy, and for a very quick reply,too!

I´m afraid I´m a bit of an electronics illiterate, but a friend of mine is a software and firmware designer, so I think I will turn to him to get these very useful gadgets realized.

Best regards,

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