Glen,
We just voted on a standard thru hull fitting that will accommodate the various underwater comms to include UQC. I would suggest you use this fitting as future use of it is all but ensured. I believe a club discount may exist for this device.
The broadband system I am providing uses 4 wires at present with future construction making use of but only two.
Someone steer Glen to the thru hull information as to ordering and specifics please.
David Bartsch
From: glenbrown@vodamail.co.za
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] RE: Hydrophones
Date: Tue, 19 Jan 2010 18:16:35 +0200
Hi David
I know this has nothing to do with the subject,I am busy making and fitting every kind of thru hull that I think I may use in future as you seem to be the bof on com's have you any suggestions on what I could make to accommodate for com's and hydrophone of which I nothing .
Thanks
Glen SA
----- Original Message -----
Sent: Monday, January 18, 2010 9:21 PM
Subject: [PSUBS-MAILIST] RE: Hydrophones
Jim,
Lets ask Jens Laland! He seems to know this kind of stuff. I had a BQS-04 on my boat.
Something to make note of...
BQS-* usually indicates "send".. that's what the "s" designates.
BQR-* usually designates "receive of listen" that's what the "r" designates.
The BQR-2 system was the system prior to the BQR-21 which my sub was equipped with and may be a stave (a stack of one or more passive hydrophones arranged in a single row.) In other words it may not be designed for active transmissions at all. You have a gem there so be sure what it was designed for before damaging it.
Jens, help us out here...
David Bartsch
> Date: Mon, 18 Jan 2010 07:19:42 -0800
> Subject: Hydrophones
> From: jimrudholm@gmail.com
> To: dbartsch2236@hotmail.com
>
> Hello,
> I have enjoyed your posts on the Psubs site and Doug and Kay's site.
>
> I have several hydrophones that were identified from BQR-2a sonars but
> cannot verify that. They are 45.5" long, the rubber body 1.875" in
> diameter, and 14.5 pounds. They are supposed to have a stack of barium
> titanate cylinders about 1.5" long and about 1/8" wall thickness for
> the active elements. I bought some of these cylinders years ago from a
> surplus electronics store. The hydrophones were purchased probably
> back in the 60s from DOD surplus at Rough and Ready Island near
> Stockton, CA.
>
> Attached is a pic.
>
> I would like to test them before offering them to the Psub community.
> I have a HP 204C oscillator and 403B voltmeter. Any suggestions for a
> test schematic?
>
> Thanks,
>
> Jim Rudholm
Hotmail: Free, trusted and rich email service. Get it now.
No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 8.5.432 / Virus Database: 270.14.149/2630 - Release Date: 01/18/10 07:35:00
Hotmail: Powerful Free email with security by Microsoft. Get it now.
|