
 CW SCOPE 4-8 v1.0: MICROPHONE O'SCOPE FOR CW.

 26 MAR 2004
 sadams16@yahoo.com
 www.geocities.com/sadams16

 THIS PROGRAM HAS TO BE USED IN A DOS OPERATING SYSTEM.

 IT TAKES TWO COMPUTERS, ONE TO RUN THIS CW O'SCOPE PROGRAM ON,
   AND ANOTHER COMPUTER TO RUN THE MORSE CODE PROGRAM BEING CHECKED
   FOR MARK, SPACE RATIOS.

 MAKE A DOS FLOPPY BOOT DISK WITH THE WINDOWS FORMAT COMMAND.
 LOAD IN THE SOUNDBLASTER 16 DOS DRIVERS WITH AUTOEXEC.BAT AND CONFIG.SYS
   ON THE FLOPPY BOOT DISK. THE PROGRAMS CAN BE COPIED TO THE FLOPPY AND
   RAN FROM THE FLOPPY.

 POWERBASIC v2.10g COMPILED EXE FILES. FIRSTBASIC v1.0 COMILER WORKS OK.

 CAN BE RUN WITH 'WINDOWS XP' BY PUTTING IT ON A BOOTABLE FLOPPY DISK AND
   BOOTING UP THE 'WINDOWS XP' COMPUTER WITH THE BOOT FLOPPY DISK. RUN
   THEM FROM THE BOOT FLOPPY DISK. PRESET.DTA ALSO HAS TO BE ON THE
   FLOPPY DISK.

 SWEEP:  SHOULD BE SET BETWEEN 1 TO 4 SECONDS.

 SAMPLE: HAS TO BE SET AT ABOUT 8000 HZ FOR THE IIR DIGITAL BANDPASS FILTERS.
 ------------------^^^^^^- -----^^^^^^^--------------------------------------------

 WITH PC INTERNAL SPEAKERS, VARY THE CW TONE FREQUENCY BETWEEN 500 TO 1000 HZ
   TO FIND THE BEST SCOPE AMPLITUDE. 

 USE IT TO CHECK FOR THE CORRECT DOT=1, DASH=3, AND SPACE=1,3,7 RATIOS

 4TH ORDER IIR DIGITAL FILTERS NEED CPU > 100 MHZ
 8TH ORDER IIR DIGITAL FILTERS NEED CPU > 200 MHZ  
