> Hi all, I am wanting to use PSK (and other digital modes) with ICOM > IC756Pro II. Can I check connections with someone to the ACC1 Socket on > rear panel. Clearly I need audio in and out from my sound card. Looking > at manual, Pin 5 is AF out, that's easy to line in/mic of soundcard. > Regarding audio in (output from sound card) I have two options (I > think). > > Pin 1 = RTTY > Pin 4 = Mod > > My software say connect audio in to RTTY terminals (pin 1), but looking > at radio manual I think Pin 4, Mod is correct. Can any one comment, > please! Thanks.............
Hi Tony - I have the PROII. On page 20 of the manual is a diagram for connecting AFSK - can be used for RTTY and PSK. It shows pin 1 being used for -FSK- RTTY keying. It's -NOT- for audio input! AF input (AFSK RTTY or PSK, or HELL, MFSK16 etc) is pin 4. Ground is pin 2. AF out is pin 5. I don't see anything about "mod". Hope this helps! 73 - John, WA9ALS
