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RE: [PSUBS-MAILIST] Passive vs active sonar
Fish locators are becoming incredibly feature rich and very affordable.
Prowl around at http://www.cabelas.com/ for some ideas.
On Thu, 2003-03-27 at 17:54, jbarlow@bjservices.ca wrote:
>
> A fish finder is active sonar. I don't know how high quality you can get
> or how good they are these days.
>
> I think it might bear investigating though.
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> Comments??
>
> Jay.
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> Michael Fodor
> <hgc_michael_1@yahoo.com> To: personal_submersibles@psubs.org
> Sent by: cc:
> owner-personal_submersible Subject: RE: [PSUBS-MAILIST] Passive vs active sonar
> s@psubs.org
>
>
> 27/03/2003 03:31 PM
> Please respond to
> personal_submersibles
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> Are there Passive and Active sonar for sale that could fit into our subs ?
> Any links or sites worth mentioning ?
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> Rob <rbell@fidnet.com> wrote:
> Wow, I can finally add value. Passive sonar (simply put) is listing to
> the sounds around you without doing any noise making of your own.
> Active sonar is generating a sound then listening to the echo from
> objects near you. Active sonar is what you get in the movies. That
> "ping" noise. The active sonar I was used to (x-navy here) does not
> usually sound like the classic "ping".
>
> -----Original Message-----
> From: owner-personal_submersibles@psubs.org
> [mailto:owner-personal_submersibles@psubs.org] On Behalf Of peter
> mckellar
> Sent: Thursday, March 27, 2003 2:51 AM
> To: personal_submersibles@psubs.org
> Subject: [PSUBS-MAILIST] Passive vs active sonar
>
> hi all,
>
> could someone please explain the difference between active and passive
> sonar?
>
> thx in advance
> peter
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> HGC. Michael
>
> The new Guardian
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