Radio Facilities at Ronaldsway in August 1948.  Most communications still seem to using Medium Frequency W/T (Morse) with High Frequency telephony on the old RAF 'Darky' frequency of 6440 KHz.  VHF voice is available on 118.1 MHz, but only for Aerodrome Control.
 1940s ATC Pages
 
An Island Images picture © Jon Wornham