HM40 Wind Microphone, CR77 UHF Diversity Receiver

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The Samson Airline 77 Wireless Wind Instrument Microphone System features the AH1 transmitter, HM40 wind instrument microphone, and CR77 true-diversity UHF receiver with 1/4" phone and XLR output connections. The system provides horn players true wireless freedom during performances, without beltpacks or cables. The HM40 microphone attaches to the bell of horns and reproduces audio with pristine clarity and accuracy.

Up to 14 hours of continuous operation is achieved on just a single AAA battery. The CR77 true-diversity receiver is the heart of the Airline 77 series and features PLL synthesised tuning, true diversity reception, dual antennas, XLR and 1/4" phone output connectors, RF level LED metres, and a large output volume control dial.

Key Features

  • True diversity UHF wireless wind instrument system with PLL frequency control
  • CR77 receiver features multi-segment audio level and RF level LED metres, Squelch and volume control, XLR and unbalanced 1/4-inch outputs with mic/line level output switch
  • AH1 headset transmitter features power/battery LED, power switch and mute switch
  • HM40 condenser horn microphone employs cardioid pickup pattern for outstanding sound
  • Horn bell clamp included for easy attachment of entire AH1/HM40 assembly to horn
  • AC adapter and 1/4-inch to 1/4-inch cable included


Frequency Range
Frequency N3- 644.125 MHz
Samson AirLine 77 Wireless Wind Instrument Microphone System (Frequency N3- 644.125 MHz)
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