To all:
Ever heard of a marine hailer?
These things are designed to allow bullhorn type
communications from one's dry wheelhouse during rainy and windy weather to
other nearby boats.
Take the airborne bullhorn away
and replace this with an underwater voice transmitter and also replace the
returning pickup microphone with an HBH-2 hydrophone and you have a ready
made underwater broadband communications unit!
To
make this even more appealing, some newer units are about he size of a new
cb console and even contain VHF radios to boot!
Go to
ebay and just look at the Standard Horizon Matrix GX3000s Marine hailer
and VHF radio. This is for a new unit and its $188.00 and this includes
shipping!
Too pricy?... boat yards frequently sell off
new but old stock items to make room for incoming merchandise.
Take the Cybernet CTX 100 Marine hailer and intercom
also showed on ebay. This old but never sold hailer is going for $49.99
with a $12.00 shipping fee. This is its second such
listing.
These hailers run circles around anything I
have thus far produced and some have extra desired features to
boot...seems I am soon to be out of a job short the transmitters and
hydrophones. I can live with this as It was my goal to inspire interest in
passive sonar and underwater comms to the point that most subbers look
into building or buying something. My goal I feel is soon to
be met.
If your not quite convinced, have a look
at Alec's old stock but never sold Ray Jefferson in action at the coming
convention. He has graciously allowed us to us it for the support vessel
and this gives us a chance to run one thru its paces first
hand.
To anyone who buys any hailer, I will be here to
aid in the construction of the voice transmitters and passive hydrophones
or I can assist you in making them as these are not too
difficult.
David Bartsch
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