Standard Royal Air Force VHF Receiver from 1950's to 1970's. Used for air to ground comms (Air Traffic Control)and VHF point to point radio links.
Also used in the VHF direction finding CRDF (Cathode Ray Direction Finder) equipment, sometimes with multi channel autotune xtal units.
Also used in the VHF direction finding CRDF (Cathode Ray Direction Finder) equipment, sometimes with multi channel autotune xtal units.