[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [PSUBS-MAILIST] milestone reached

underwater speakers

Subject: RE: [PSUBS-MAILIST] milestone reached
Date: Thu, 9 Oct 2008 17:13:14 +1100
From: DCropp@seven.com.au
To: personal_submersibles@psubs.org

I am also interested in the Transducers you are talking about, i could not find the ones in particular you mention here. What can i specifically search under on Ebay to find them...?
 
Many Thanks, Dean

From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of David Bartsch
Sent: Thursday, 9 October 2008 1:34 PM
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] milestone reached

Hugh,
 
  This thing should be very affordable too! This transducer for solids lists under e-bay on underwater speakers and is 2.5lbs and only 4" in diameter and sells for about $19.00. It is a tan color and has but two crimp styled push on connectors on the back. It is fully encased in plastic but must be further strengthened to go down deeper. It has 8 oms of resistance just as a regular speaker (just what we were looking for) and is said to take a full 30 watts of power. The system so far produced uses just 7watts.
   I will send pictures of my progress on Friday night.
 
                                                                                      David Bartsch



From: hc.fulton@gmail.com
To: personal_submersibles@psubs.org
Subject: RE: [PSUBS-MAILIST] milestone reached
Date: Thu, 9 Oct 2008 09:02:37 +1300


Well done. 

 

At last we can converse with the dolphins who may listen to us, instead of our wives who rarely do!

The understanding will probably be the same level, but our hope may be higher.

 

 

From: owner-personal_submersibles@psubs.org [mailto:owner-personal_submersibles@psubs.org] On Behalf Of David Bartsch
Sent: 09 October 2008 08:33
To: personal_submersibles@psubs.org
Subject: [PSUBS-MAILIST] milestone reached

 

To all:
 
  A milestone has just been reached in the quest for underwater voice communications. A special underwater speaker comprised of a tranducer for solids has been made that so far looks as if it can be lowered the 500' we are looking for. The goal was to be able to talk boat to boat while both are submerged at 150' deep and 150' apart.
  Although it is not intended to function down to the full 500', it must withstand the pressure this far down and come up shallower and still work reliably.
  Frank D. is building a pressure chamber and will test this speaker once further testing is completed here in TN. This initial underwater speaker is a key component to Franks passive sonar/underwater communications console.
  Other simular communications system are presently under construction with completions and installs soon to follow.
 
                                                                                           David Bartsch
 
 

See how Windows connects the people, information, and fun that are part of your life. See Now

__________ Information from ESET NOD32 Antivirus, version of virus signature database 3504 (20081008) __________

The message was checked by ESET NOD32 Antivirus.

http://www.eset.com


Stay up to date on your PC, the Web, and your mobile phone with Windows Live. See Now

##########################################################


Important Notice:


This message and its attachments are confidential and may contain information which is protected by copyright. It is intended solely for the named addressee. If you are not the authorised recipient (or responsible for delivery of the message to the authorised recipient), you must not use, disclose, print, copy or deliver this message or its attachments to anyone. If you receive this email in error, please contact the sender immediately and permanently delete this message and its attachments from your system.
Any content of this message and its attachments that does not relate to the official business of Seven Network Limited or its subsidiaries must be taken not to have been
sent or endorsed by any of them. No representation is made that this email or its attachments are without defect or that the contents express views other than those of the sender.

 

##########################################################


Stay up to date on your PC, the Web, and your mobile phone with Windows Live. See Now