Samson AirLine 77 Vocal Head Worn Wireless Microphone System, Frequency N2 - 642.875MHz


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About Samson

The Samson AirLine 77 Vocal Head Worn Wireless Microphone System (Frequency N2- 642.875MHz) features the QV10e head worn vocal microphone transmitter and CR77 true-diversity UHF receiver with 1/4" phone and XLR output connections. The QV10e head worn microphone features a built-in transmitter, wrap-around headband and unidirectional polar pattern.

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 synthesized tuning, true diversity reception, dual antennas, XLR and 1/4" phone output connectors, RF level LED meters and a large output volume control dial.

Samson Features

  • XLR and unbalanced 1/4-inch outputs with mic/line level output switch
  • Headset transmitter features power/battery LED, power switch and mute switch
  • Headset condenser mic is sweat resistant and employs unidirectional cardioid pickup pattern for great sound
  • True diversity UHF wireless headset system with PLL frequency control
  • CR77 receiver features multi-segment audio level and RF level LED meters Squelch and volume control

Samson Specifications

Frequency Range
Frequency N2- 642.875MHz
Transmitter AH1: Operating Power Voltage
1.5V Typical, 1.05V Minimum, 2V Maximum
Transmitter AH1: Current Consumption
60mA Typical
Transmitter AH1: Battery Life
14 Hours (AAA size battery)
Transmitter AH1: RF Output Power (5mW)
-4dB Minimum, +3dB Maximum
Transmitter AH1: Frequency Stability
-40kHz Minimum, 40kHz Maximum
Transmitter AH1: Spurious
Transmitter AH1: Modulation Factor
13kHz Minimum, 15kHz Typical, 17kHz Maximum, Input 1kHz-20dBv
Transmitter AH1: Input Impedance (Mic)
2K ohms
Transmitter AH1: THD
< 2% (1 kHz deviation 15kHz)
Transmitter AH1: Audio Freq. Response
50Hz - 15kHz (±3.5 dB)
Transmitter AH1: Controls
Power Switch, Mute Switch Volume
Transmitter AH1: Input
2.5mm Stereo Jack
Transmitter AH1: Indicators
Power On (LED Flash), Low Battery (LED On
CR77 Receiver: Receiving Frequencies
801-806 MHz (U1-U6)
CR77 Receiver: Oscillation Type
CR77 Receiver: De-emphasis
50 m/sec
CR77 Receiver: IF Frequency
10.7 MHz
CR77 Receiver: A/B Antennas
1/4 Wavelength Rod
CR77 Receiver: In/Out
DC Inlet , Balanced Output, Unbalanced Output
CR77 Receiver: Display (LED)
Receiver A/B (Green), Power On (Red), AF Level (6 segment), RF Level (6 segment)
CR77 Receiver: Level Control
Audio Level Volume, Squelch Level Control
CR77 Receiver: Operating Temperature
0deg. C / 50deg. C
CR77 Receiver: Operating Voltage
12 Volts ±10%
CR77 Receiver: Current Consumption
160 mA (all LED lights illuminated)
CR77 Receiver: Receiving Frequency Range
801 - 805 MHz or 863 - 865 MHz
CR77 Receiver: Sensitivity
18 dBm ( at THD2%)
CR77 Receiver: Squelch Sensitivity
0 - 40 dBm (Adjustable)
CR77 Receiver: Selectivity
±150 kHz (AF Out Ratio -60 dB)
CR77 Receiver: T.H.D. (Overall)
1% Max ( at AF 1 kHz, RF 46 dBu)
CR77 Receiver: S/N Ratio (Overall)
90 dB (w/IHF-AFilter)
CR77 Receiver: Residual Noise
90 dBv (w/IHF-AFilter)
CR77 Receiver: Band Squelch
±40 kHz / ±100 kHz (RF IN: 46 dBu EMF)
Audio Output Level
Unbalanced: 0 dBv
Balanced: -20 dBm (Line), -40 dBm (Mic) (slide switch selectable)
Audio Output Impedance
Unbalanced: 5 k Ohms
Balanced: 600 Ohms
Mfr #
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