Speaker phone needed (circuit?)

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Article #3373

#3373

From: David Aber
Date: Tue, 10 Oct 1989 18:00

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I am looking for a GOOD speaker phone.  Most of the ones I have seen are only
half duplex.  The one full duplex one I found has very low volume.  I don't 
know if this it to prevent the echos from being picked up or what.  

What I would really like is a speaker phone with:
  
         Lots of volume;  both ways (Its not fair to make the other person 
                                     listen to you from the end of a cave)
         Full key pad;  some phones use the # and * keys for other functions
         Decent sound quality;

Does anybody know of such a device?  Any ideas how to fabricate one?  Any help
would be greatly appreciated.

_____________________________________
aber@gumby.cs.wisc.edu

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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!uwvax!puff!gumby.cs.wisc.edu!aber
From: aber@gumby.cs.wisc.edu (David Aber)
Newsgroups: sci.electronics
Subject: Speaker phone needed (circuit?)
Message-ID: <3268@puff.cs.wisc.edu>
Date: 10 Oct 89 18:00:44 GMT
Sender: news@puff.cs.wisc.edu
Reply-To: aber@gumby.cs.wisc.edu (David Aber)
Distribution: usa
Organization: U of Wisconsin CS Dept
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