Yeah, I've asked for it from Jeti too.

the big problem is "hands free" on the advance, voice recognition on Android doesn't work continuously and on iPhone it doesn't work in a noisy environment (like a field with a glow or gas plane flying nearby). So let me take the opportunity to ask for thoughts here. I have a few viable options:

Bluetooth LE foot switch that would let you start, advance, replay, and go back. I'd have to build these (hey! That's what 3D printers are for :-) and I'd estimate the cost to be about $50 per.

Pebble/Agent/etc. smart watch control, twist your wrist to advance, replay (probably no go back option), click a button on the watch to start calling (you should still be on the ground at that point since the first call is "takeoff" :-) These cost $150, but have lots of other cool features to go along with your iPhone and/or Android device.

A Bluetooth LE set of switches you could adhere to your TX wherever you want to start/advance, replay, go back -- Again, I'd do this as a custom thing, probably cost about $50 per, possibly better than that, but I'm trying to be "safe" in the estimate.

If enough people are interested I could engage a manufacturer and do a custom board which would reduce the cost somewhat but take longer...

What would folks prefer?

Peter+