In the late '60s and early '70s, our ULAS Chippies had that ancient VHF set, which was lovingly fitted with crystals tuned to long-dead mil VHF frequencies such as 142.29 Mc/s and 115.56 Mc/s.....
We had the same UHF radio in the Bulldog as was originally fitted in the UHF Chipmunks. Another large lump of ironmongery strapped down behind the left seat. I think it was also stuffed full of crystals; presumably voltage controlled oscillators working at UHF were but a distant dream when this ancient wireless set was first designed..... Fortunately the avionic upgrade included a proper multi-channel UHF set!