Gary,

I've had the same question. If there is a way to do that with the stock Jeti sensor and TX settings that would be great but I don't know of any. But I am still a relative Jeti newbie.

But, along these same lines, my friend Walt L. made an interesting suggestion that instead of calling out airspeed every N seconds, perhaps enabled by a switch (that's how I've always done it on my Futaba systems, and so far on Jeti) , it would be nice to have a speed announce only when it changed by, say, 10mph. I have a prototype lua extension working that has the following capabilities:

1) you select the speed sensor (e.g. pitot-static or gps) with the typical Jeti menu
2) you set the interval for changes in speed .. it announces the speed (with no decimals .. rounded to a whole number!) only when it changes by the interval you set (typically 10 mph)
3) you can set a max speed (e.g. 200mph) and get a warning if you pass that speed
4) you can set a "Vref" speed (e.g. 1.3 * Vs0 .. where Vs0 is the power-off stall speed) ... at or below Vref it calls out speed every <n> seconds where n is settable (usually 2 sec) .. so it works automatically on final approach .. it starts announcing independent of the interval changes (like Carsten's stand-alone telemetry system for his ASSI)
5) you can get a stall warning with stick shaker at Vs0

There are a few other options, but I think you get the idea. I learned a lot from studying Tero's "RC Thoughts" site, and was inspired by his altitude announcer lua extension that helps aerotowing pilots. I'd be delighted to take feedback on the requirements and features for this extension as I finish up a workable version 1.

After I bang on it a bit, I'll post the link to the github repository if anyone here wants to try it, but I have to send it to Walt first :-)

I've also been working on a companion "super timer" lua extension that announces flight time and fuel state every 30 seconds, and also keeps track of main battery current and voltage from the CB400.

Dave