Samson Airline 77 AH1 HM40 instrument system comes without any belt-packs or cables permitting complete freedom for users on the go. Samson Airline 77 AH1 HM40 comprises of an AH1 transmitter, a CR77 true-diversity half-rack UHF receiver and a Samson HM40 condenser element. Airline wind instrument system allows the performer to mount the microphone with the transmitter to the bell of the instrument. CR77 receiver features a front panel display with large multi-segment Audio level and RF level LED meters, and a large rotary volume knob allows easy adjustment of audio output. In addition the Samson Airline 77 AH1 HM40 wireless system has 14 hours of operation on a single battery with the ability of adding another CR77 receiver that can be rack mounted together in a single space rack adapter.