I think this is well established at this point. UAS pilots are not trained, qualified, tested, or expected to broadcast on CTAF. A manned aircraft pilot has a far different level of trianing, testing, and experience. UAS pilots are not required to use, own, or operate a voice radio in any form. As a private pilot and part 107 pilot I can say from the perspective of a private pilot that I would not want (prospectively) untrained inexperienced and unqualified UAS pilots to clog the CTAF. I realize that others may have another opinion that more info is better, but I believe the FAA at this point doesn't want millions of UAS pilots clogging the frequency of manned aircraft. That not a good solution. See and avoid is the UAS pilot's obligation and responsibility. As a private pilot it's hard enough spotting a Cessna on final. Adding the workload of listening to UAS pilots and fixating on potential UAS conflicts makes flight more dangerous, not safer. Stay off the CTAF and stay away from manned flight.
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