It is disappointing that we have marine-16, air guard, etc., but no single "go-to" civilian emergency freq. I'm sure we could find a little-to-unused, probably currently federal VHF frequency to petition for such a thing. Maybe find a few outdoorsy congressmen to champion the cause? Get it in NIFOG and it gets pushed out a bunch of places, then we would need to get agencies to monitor it, etc. Seems like someone must have thought of this, no?
With only slight sarcasm, I say the following:
I want to see this request go to NTIA, get sent through IRAC and approved. It won't happen. I have a foot in both the FCC and NTIA space and there is very little, if any, "little-to-unused" federal spectrum. In fact, it's so scarce the fed agencies sometimes are coming to locals to squat on their channels.
Non-savvy civilians should have a personal locator, period. Ham operators should have both a locator and a hammy radio to holler on 146.520, etc. but nobody is usually home on the latter. If you're really motivated have both of these and a FRS/GMRS radio but I'm not too sure little Sally playing hide-n-seek is going to answer the Mayday call.