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The following circuits may be used separately or in conjunction with the remote alert circuit
Serial interface for Morse keyer
Parallel interface for Morse keyer
If you are using a serial port for keying then you may use any port whether it is capable of interrupt driven operation or not. If you have COM 3 or 4, then I suggest you use one of them, leaving COM 1 and 2 free for other more demanding interfaces such as the TNC and transceiver computer links.
This topic was last edited on Thursday, 17-Jun-2021, at 10:49