RE: [PSUBS-MAILIST] Passive vs active sonar

[Ward Monroe <wardomon@comcast.net>]

It depends on where you aim it.  BottomLine fishfinders have a
sidefinder that will see fish out to something like 120 feet, maybe more
I don't exactly remember, as well as down.  Wiring up several heads into
an array shouldn't be much of a challenge for the electronically
informed.  Color displays are also available.  How cool would that be?

On Thu, 2003-03-27 at 19:36, Michael Fodor wrote:
> 
> Yeah it is but you have to keep in mind that all your scanning with a fish finder is the bottom, and not all around you.
>  
>  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.
> 
> Comments??
> 
> Jay.
> 
> 
> 
> 
> 
> Michael Fodor 
> 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 
> 
> 
> 
> 
> 
> 
> 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 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
> 
> 
> 
> 
> HGC. Michael
> 
> The new Guardian
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> HGC. Michael
> 
>   The new Guardian
> 
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