[WriteLog] Voice keying with sound card

[John Griswold]

I feel right flat stupid in asking, but that's not an uncommon place for me to be...

I am trying to set up voice keying with the sound card. Rig control is on COM1, and that's been working very well since I last visited to ask a question. I have an MFJ-1275 that works just fine with Writelog for RTTY contesting - where MMTTY knows that COM5 is used to key the transmitter and the sound card is used to process the RTTY. I set CommSlot4=5 in WriteLog.ini to gain access to COM5, and I just can't figure out what combination of stuff to configure to get the transmitter to key when I press a function key. Comm PTT doesn't do it, setting CW on COM5 keys down constantly, All mode PTT on CW port RTS seems to key constantly, etc. I'm sure there's a magic configuration, isn't there?

I'd really appreciate it if one of you folks  taking a break from contesting could fill me in. Please use little words - I'm a software engineer...

Thanks in advance,
John
KB1HDO