?.
Was there a change to the definition of VHF and UHF that we didn't get the memo on?
Our own versions of the 60 have needs for VHF along with FM, UHF and HF, secure or not. Presumably the USA doesn't use an ICOM A23 or similar when dropping in to some towns local airstrip. ARC-231"s? using a UHF freq when mixing with civil traffic would be self limiting, presumably the tapes will indicate the helo was on VHF freq not the UHF one.
The ITU definition of UHF is 300MHz to 3GHz. Hence I this wasn’t UHF.
It seems that radio marketers do call 257.6 MHz UHF. Go figure
