I wonder if it was selected to interoperate with the TBS in the 60 to 80 MHz range. -John Mike Morrow wrote: > > I never knew that the USN adopted this set. I always saw it mentioned in WWII QSTs as the most common War Emergency Radio Service (WERS) set, operating around 112 MC instead of the range shown for the MS on its namplate. > > Mike / KK5F