[fsiefken]

it could be done with codec2, but duty cycle of 1% would limit it to push to talk brief sentences every minute or so, it might be better to stick to text. Perhaps handy when someone had a mountain accident and can only push and talk. Use a speech to text decoder and limit expressions to 140 characters, should be enough for every piece of conversation including this comment (with vowels stripped out). o wait, that's to little - make it 300 characters.