Hi David, Sorry to be so backward but what is the
capability of what you are suggesting. Is this setup with the bullhorn capable
of transmission between sub and surface? If so, then what would you
expect the range to be and what frequency would it operate at. Seems a
wonderful way to go but I want to understand fully what you are suggesting. I’m
a bit slow on these things. Chs, Hugh
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of David
Bartsch
Sent: Saturday, 20 February 2010 11:40 p.m.
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] revelation
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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