On 16/05/2016 22:50, Richard Bown wrote: > Its putting a tone on the unused audio channel when in Tx > So if data was on the Right channel, put an audio tone, doesn't matter what > frequency, > on the left channel (TX Mode only ). > Has the advantage on simple rigs that you can rectify it, diode and a cap, > and then use the > recovered DC to switch the PTT, and if the tone is sent before the data , > everything is already in > TX mode so no hot switching.
Hi Richard, understood, I had not come across such a feature before but I can see that it makes sense for a lightweight PTT method with some advantages over VOX. I expect the benefit is marginal given that switching PTT with audio present is not really "hot switching" as almost all rigs that I know of (some Icoms with ALC design issues being a notable exception) have no issues switching to send when there is Tx audio present at the modulator. I need to think about this a bit as to implement it cuts across the audio and rig control components which both run in their own thread. The implementation would have to be carefully designed to maintain thread safe operation within WSJT-X. It is certainly doable but I would be a little concerned that the extra benefit would justify the extra complexity. It is a shame that modern PCs no longer have parallel ports as a parallel port can easily be used as a GPIO port for this sort of requirement and this is already supported by Hamlib. 73 Bill G4WJS. ------------------------------------------------------------------------------ Mobile security can be enabling, not merely restricting. Employees who bring their own devices (BYOD) to work are irked by the imposition of MDM restrictions. Mobile Device Manager Plus allows you to control only the apps on BYO-devices by containerizing them, leaving personal data untouched! https://ad.doubleclick.net/ddm/clk/304595813;131938128;j _______________________________________________ wsjt-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/wsjt-devel
