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From: vervalin@AUSTIN.LOCKHEED.COM (Paul Vervalin)
Newsgroups: comp.sys.handhelds
Subject: Re: Dual tones for HP28S
Summary: How about on a HP48 ??
Keywords: HP28S dual tones
Message-ID: <387@shrike.AUSTIN.LOCKHEED.COM>
Date: 17 Oct 90 23:41:04 GMT
References: <1990Oct17.210043.19196@rodan.acs.syr.edu>
Distribution: usa
Organization: Lockheed Austin Div.
Lines: 16

In article <1990Oct17.210043.19196@rodan.acs.syr.edu>, mjsydoro@rodan.acs.syr.edu (Mark J. Sydorowych) writes:
> Does anyone know if it's possible to produce dual tones (same as touch
> tone pads on phones) on a 28S?.......thanks..........
>  
>                                      Mark.......

I would be interested in doing this on a HP48SX.  Does anyone know what the
frequencies are for touch tone phones?
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