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Ron, A small band of researchers are just about to test a very inexpensive broadband voice communications system. The testing is scheduled for this comming Spring and will take place in Michigan. A complete set up which includes two passive sonar hydrophones (to pick up returning messages) and a single broadband voice transmitter along with the actual amplifier console should be about only $200.00. The way the system works is when a handheld cb styled handset has its press-to-talk thumbswitch activated, this deactivates the incomming hydrophone signal supplied to the listen channel Channel A) to protect it from possible overload condition. This button also connects the transmit signal from the handsets internal microphone and allows for its use with the channel B or the transmit amplifier electronics. Once the transmission is completed, the thumbswitch is released and the listen channel is once again enabled to function. This initial system runs on but a 12vdc battery located anywhere within the submarine and the handset can also be so positioned when using a 10' extention. Sorta like a truckers cb! Both stations be it surface craft or submarines would need this complete set up to both talk and hear. The great news is this system should function at least 150' apart and 150' deep. There would no longer be a need to first surface before sending and recieving a message. We will also investigate as to if divers would be hearing impaired while trying to listen to this 2 watt peak to peak signal. (these should be low enough not to injure their ears) Further system upgrades could use the full 30 watts capacity of the supplied voice transmitter. Share with me your e-mail address and I will send attachments of where this system is now and where we plan to go with this thing should you be interested. David Bartsch > From: ronleonard@shaw.ca > To: personal_submersibles@psubs.org > Subject: [PSUBS-MAILIST] Sub to surface communications > Date: Mon, 12 Jan 2009 12:32:43 -0800 > > What do you guys have experience with, or are finding success with, > for sub to surface communications? > > I've tried the Orcatron stuff, and the range is OK, but it's quite > expensive. > > Thanks, > Ron > > > > > > > > ************************************************************************ > ************************************************************************ > ************************************************************************ > The personal submersibles mailing list complies with the US Federal > CAN-SPAM Act of 2003. Your email address appears in our database > because either you, or someone you know, requested you receive messages > from our organization. > > If you want to be removed from this mailing list simply click on the > link below or send a blank email message to: > removeme-personal_submersibles@psubs.org > > Removal of your email address from this mailing list occurs by an > automated process and should be complete within five minutes of > our server receiving your request. > > PSUBS.ORG > PO Box 53 > Weare, NH 03281 > 603-529-1100 > ************************************************************************ > ************************************************************************ > ************************************************************************ > Windows Live™ Hotmail®: Chat. Store. Share. Do more with mail. Check it out. |