>  Thanks Roy.
>  I saw a program similiar to this a few months back but it 
> had a bug in it and
> crashed as soon as you entered your frequency limits.
>  And when it did you had to do hard re-boot to get out of 
> the crash.
 
  Beats me. Just tried it with several sets of data (30-50, 50-54, 50-144, 
50-450) and they all worked okay on my QBasic here with MS-DOS 5.0. :-)
 
                                                        _Ray_
 
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