A 1962 National MAP can cost you thousands of pounds for a quality that leaves much to be desired. The Airline MAP is an improved and affordable version.
With the Samson Airline Micro Earset, the age of excessive wiring and batteries is over. The omnidirectional, moisture-proof transmitter/microphone is worn around the ear and operates on a battery pack, as does the receiver. E3 is the frequency 864.500 MHz.