The UFLYMike with the QC2 is TSO'd if you have the stickers on it (you have to send it to UFlyMike) and use the
earbud (which you can purchase from UFlyMike for a
great price, can't beat it anywhere) - go to my explaination on the forum of it
here, or just go to the
UFlyMike website (scroll down to the section about TSO'd, or PM me and I'll answer any questions you have).
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Apparently the port on the mike adapter is both an input and an output. If you plug an earbud into that port, it should provide ATC reception even with a dead battery. I don't know if the mic will still work but I'm going to find out today.