Jim, This is a bit of a stab in the dark, and may or may not have anything to do with what is happening to you, but exactly how many methods are you using to do PTT? It sounds as if you may have two or perhaps even three methods enabled simultaneously, which is not a good idea and might be contributing to the problem by confusing the firmware somehow if the hardware and software commands are getting crossed due to slight timing differences.
1) MMTTY is controlling PTT on DTR/RTS on COM4, which you have connected to the PTT pin on the ACC connector via a keying circuit. 2) You are using MMTTY's Radio command, which means MMTTY will be sending TX; and RX; commands over COM1 unless you have deliberately blanked out the RX and TX boxes in the Commands pane of the MMTTY Radio command dialog box. 3) If you happen to have the PTT box checked for DTR/RTS in the MMTTY Radio command dialog (top right), MMTTY is also controlling DTR/RTS on COM1, and if you have the K3's CONFIG:PTT-KEY set to anything other than OFF-xxx, this would also be commanding the K3's PTT on and off. Since you have method 1 implemented via the ACC connector, you don't really need MMTTY's Radio command at all, at least not for purposes of PTT. If you are using Radio command in order to get radio frequency information into MMTTY for logging purposes, you might consider: (a) unchecking the PTT box for DTR/RTS in the MMTTY Radio command dialog box; and if this doesn't work or it is already unchecked (b) clearing out the contents of the Rx and Tx commands in the MMTTY Radio command dialog box in order to stop MMTTY from trying to control PTT via software. Hope this helps. 73, Rich VE3KI ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
