>> 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.
 RBK>   Beats me. Just tried it with several sets of data (30-50, 50-54, 
50-144,
 RBK> 50-450) and they all worked okay on my QBasic here with MS-DOS 5.0. :-)
 Must be just my system then.
 I run a multi operating system computer with boots for DOS,and two versions 
of WinDOZE NT on it so maybe one of them did something to my Qbasic 
executable.
 Who knows...
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