Boomerang/Chipwich are absolutely correct.
Some (many?) Military aircraft don’t even have VHF radios. The Harrier didn’t. The T-45 did but it is a trainer after all.
Most civilian ATC has/had the capability of operating on both VHF and UHF.
As for the lower freqs, it’s not merely that they aren’t designated for use in voice comm. It’s that they are designated for other uses.
Below 118.0 (or so, I forget) is the VOR band which runs down to 112.0ish? Below that is ILS territory.
On old hardware radios there just weren’t numbers for freqs you weren’t able to use (e.g. Transponders had a first digit selector that went 1-7, no 8 or 9)
More modern ones generally fail to accept the entry.
Individual planes of course will vary.