Re: [PSUBS-MAILIST] radio link

["Rick and Marcia" <empiricus@telus.net>]

Thanks, Al - will follow up.

Rick



----- Original Message -----
From: "Al Secor" <wreckdiver@frontiernet.net>
To: <personal_submersibles@psubs.org>
Sent: Thursday, April 10, 2008 5:02 PM
Subject: Re: [PSUBS-MAILIST] radio link


> Sorry, got two of my links wrong....faulty memory ;-)
>
> www.oceantechnologysystems.com is the correct adr for OTS and
>
> www.divelink.net is correct for the second.
>
> Two additional ones:
>
> www.orcatron.com
>
> http://www.fuji-us.co.jp/e/underwater/
>
> Hope this is helpful to someone.
>
> Andy, I realize that transducers (or anything else for that matter) is
> cheaper in quantity but I'm sure as hell aren't going to commit to any
> quantity when no one appears interested enough to give me any input.  My
> reasons for 32 Khz was to be compatible with my OTS scuba comm which is
> 32.768 Khz USB but maybe there isn't that much interest in talking to
> divers....kind of hard to tell with no input.  I did find some cheap 40
Khz
> unpotted elements on E-Bay which are certainly a possibility.  Do you have
> any detailed info on what's involved to pot them?
>
> Regarding your comment on pingers creating noise...I agree...I was not
> intending to run comm and pinger at the same time....Te pinger function I
am
> going to include in the radio design is more of just an automated CW
(morse
> code) broadcasted by the radio so it's signal could be zeroed in on
without
> having someone constantly talking on the radio.
>
> Al Secor
>
> ----- Original Message -----
> From: "Al Secor" <wreckdiver@frontiernet.net>
> To: <personal_submersibles@psubs.org>; "Rick and Marcia"
> <empiricus@telus.net>
> Sent: Thursday, April 10, 2008 1:24 PM
> Subject: Re: [PSUBS-MAILIST] radio link
>
>
>
> If you want something that is tried and true and not half assed then
> you need to go ultrasonic as Jay mentioned earlier.  The following
> companies offer off the shelf solutions for underwater to surface comms:
>
> www.ots.com
>
> www.divelink.com
>
> www.oceanreefgroup.com
>
> There are a few others but these guys are the major players with OTS
> probably being the top dog (I speaking strictly non commercial, non
> military).
>
> Ir you want reliable (mostly) and non-Mickey-mouse comm, this is the
> way to go.  It's going to be somewhat pricey but hey, if we can afford
> side scan sonar and all other types of expensive "toys" then a
> reliable form of surface communication should be affordable.
>
> Now, on a side note, I am working on a cheaper alternative using the
> same basic design as the companies listed above.  My major stumbling
> block is an affordable transducer which I am still looking for and
> have not yet found.  Most of the ones I've located so far cost as
> much, if not more than the costs of the entire units of the above
> companies.  OTS acts very suspicious when I try to purchase a
> "replacement transducer".....
>
> I've mentioned in several previous posts that I am working on this and
> pretty much get silence in return so I have to wonder how many people
> are actually willing to step up and "pet the pony" and actually
> purchase something like this.  I couldn't even get a response as to
> what people view as an acceptable price to invest in something like
> this would be.  Right now, my prototype is spoken for and is being
> built for Dan H. for use on Persistance.  If I don't get any feedback,
> this will likely be the only pair of units I will build.
>
> Al Secor - Electrical Engineer for IBM, Ham Radio operator callsign WA3PWX
>
>
>
>
>
>
> ************************************************************************
> ************************************************************************
> ************************************************************************
> 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
> ************************************************************************
> ************************************************************************
> ************************************************************************
>
>





************************************************************************
************************************************************************
************************************************************************
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
************************************************************************
************************************************************************
************************************************************************