Xref: utzoo rec.boats:4557 sci.electronics:14393 Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!swrinde!emory!mephisto!mcnc!decvax.dec.com!shlump.nac.dec.com!sweep.enet.dec.com!preece From: preece@sweep.enet.dec.com Newsgroups: rec.boats,sci.electronics Subject: Re: Eagle Fish I.D. and Fish I.D. Plus sonars problems Message-ID: <15365@shlump.nac.dec.com> Date: 14 Sep 90 10:25:41 GMT References: <151118@felix.UUCP> <2693@s3.ireq.hydro.qc.ca> <656@ghp.UUCP> Sender: newsdaemon@shlump.nac.dec.com Reply-To: preece@sweep.enet.dec.com () Followup-To: rec.boats Organization: Digital Equipment Corporation Lines: 14 If you really want to play with the concepts of sonar, in air, try to get hold of one the "designer packs" that Polaroid Co put out a few years back. It was the "works" from the ultrasonic rangefinder they had on one of their cameras, but sold "loose", specifically for people to experiment with. I remember looking at it, and the cash in my pocket, and trying hard to think of a reason why I needed one! Have fun ! Ian "I wouldn't work for a company that had opinions like mine."