The request was to use the secondary audio with a VOX circuit as the PTT control.??AX.25 may deal with PTT delay in a normal circumstance, but my?point was that since you state the audio is sent on both channels at the exact same time, there cannot be a PTT delay.? If anything, the VOX will delay the PTT in the wrong direction.
In order for the secondary audio VOX circuit to work in the same manner as you describe the AX.25, the secondary audio would have to start TXDELAY milliseconds before the primary audio used for sending the packet.
On Fri, Mar 12, 2021 at 19:31, WB2OSZ
<wb2osz@...> wrote:
When an application opens a stereo audio output device in mono mode, the same thing comes out of both audio channels.
AX.25 already deals with the delay between asserting PTT and the radio link stabilizing.?? It is the TXDELAY parameter.? This is the amount of time that an idle pattern is sent by the modem before sending the data.?
