Originally Posted by
MPN11
PN ... I tried for hearing disability assessment when I retired. I was not deaf enough, but the specialist said my frequency loss (2-4 mhz?) was apparently classic .303. My fault, possibly. I used to clear hangovers at CATCS by begging a few rounds from the ATC on Saturday mornings!!
I suspect the frequency range was 2 to 4 kilohertz.