When filing a flight plan (VFR or IFR), and you are carrying some
non-aviation-type backup means of communications such as an FRS/GMRS
radio or an amateur VHF radio, is it worth it to put in the "Remarks"
something like "Amateur 146.52 MHz, GMRS Channel 1"?

I'm sure that if you go down, the CAP or whoever comes looking for
your sorry butt would be interested in knowing if they should try to
call you on something other than 121.5.

Any thoughts?