home *** CD-ROM | disk | FTP | other *** search
- **** CW RECEIVE PROGRAM ****
-
-
- This program will copy International Morse Code to the PC console screen.
- The input is via the Asynchronous Communication Adapter #1 "Carrier
- Detect" input (pin #8). An EIA RS 232C "plus" voltage to pin #8 is
- interpreted as "key down". The "minus" voltage is interpreted as "key
- up". The program adjusts itself to the speed of the received CW signal
- in one of two ways, under control of the <F9> key, which is used as a
- "toggle". If <F9> is inactive (the default condition), the speed algorithm
- examines both dits and dahs. This provides the most rapid speed adjustment
- and is recommended for initial acquisition of a received signal. In this
- mode, the program assumes a dit length to dah length ratio of 1 to 3.
- With <F9> active, only the dah length is examined by the algorithm.
- This mode may provide better copy in the presence of static crashes, or
- if the received signal has other than the normal 1:3 weighting.
-