[RTTY] Multi-mode interface QST article?

[Richard Ferch]

Re the n9art interface article: be warned that this interface is not really 
compatible with any of today's sound-card digital software. The vast 
majority of the circuit is a Hamcomm-style interface for old pre-sound-card 
DOS programs which do not use a sound card. If you don't need a Hamcomm 
interface, this circuit uses up an entire serial port (DSR, DTR, RTS and 
TxD) while providing no means for CW or FSK keying, only PTT.

73,
Rich VE3IAY