In infield recordings, is audio ever wirelessly transmitted to the camera in real-time? I read that the Tascam DR10L is good for infield audio recording, but doesn't appear to transmit audio.

Listening to your wingman's solo approach in real-time would provide opportunities to jump in whenever it's beneficial to do so, as well as giving you something to listen to while you're waiting.

So what kind of setup can both record and transmit audio?