Putting an underwater sound generating Pinger on your sub when combined with the use of an onshore hydrophone means that you are almost certain to be able to recover your submarine (if or when?) you get a sinking.
The Pinger chips are easily available for AMS members (for £5) but the hydrophone can be an expensive item to purchase.
A number of people have made their own hydrophones based on the Loughborough University model.
I include a reference to this to give you an idea but we have a lot more expertise within the AMS and I will post more in future. Generally when the AMS meets e.g Alfold, Barrow etc someone has a hydrophone so you only need the Pinger on your submarine but the more hydrophones out there the better!
The instructions for the very useful Loughborough unit can be found at:
The hydrophone itself:
http://sonar-fs.lboro.ac.uk/uag/downloads/bender2.pdf
The preamplifier:
http://sonar-fs.lboro.ac.uk/uag/downloads/preamp2.pdf
(Note to Webmaster, I will also put this in the electronics section.
The Pinger chips are easily available for AMS members (for £5) but the hydrophone can be an expensive item to purchase.
A number of people have made their own hydrophones based on the Loughborough University model.
I include a reference to this to give you an idea but we have a lot more expertise within the AMS and I will post more in future. Generally when the AMS meets e.g Alfold, Barrow etc someone has a hydrophone so you only need the Pinger on your submarine but the more hydrophones out there the better!
The instructions for the very useful Loughborough unit can be found at:
The hydrophone itself:
http://sonar-fs.lboro.ac.uk/uag/downloads/bender2.pdf
The preamplifier:
http://sonar-fs.lboro.ac.uk/uag/downloads/preamp2.pdf
(Note to Webmaster, I will also put this in the electronics section.
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