On 17 Jul 2020 at 15:15, Bill Somerville wrote: > Hi Martin, > > thanks, that will be helpful. It would not be the first rig that doesn't > correctly apply "OR" logic to multiple sources of PTT. > > 73 > Bill > G4WJS.
Hi again Bill, I've just got round to repeating the tests with the hard-wired PTT signal generated by the G4ZLP interface unit disconnected from the rig and, although it's quite difficult to be absolutely sure, I don't think the results were significantly different to what I'd previously reported - there still seemed to be a bit of a lag between initiating Tune and the rig actually going into Tx mode and the onset of the audio. However... It's just occurred to me that a (possibly significant) factor in my setup is that I've got a K9JM CI-V router between the PC and the IC-7610's CI-V port to which the CAT commands from the PC are sent - the presence of the K9JM device in the CAT data connection between PC and rig will almost certainly be adding a bit of latency into the CAT command path. Although the virtual COM port connection between the PC and the K9JM router runs at 38.4kbps the CI-V connection from the router to the 7610 is only running at 9.6kbps - I think that's the default for the K9JM router's CI-V ports which I didn't change when I added the router into my system a couple of years ago. So, my observations of a Tx-start delay when using the Rig split option and CAT for PTT in my system should probably be heavily caveat'ed and taken with a large pinch of salt - there are potentially several aspects of my particular overall configuration that could be leading, or at least contributing, to what I've observed. Perhaps I should try using a direct USB connection between PC and the IC-7610 for the CAT control - I'll see if I can do that sometime. -- 73, Martin G0HDB -- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _______________________________________________ wsjt-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/wsjt-devel
