Samson AirLine 77 Fitness Headset Wireless System (K3 Band/492.425 MHz)


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  • The AirLine 77 Fitness Headset Wireless System offers a true wireless experience with no beltpacks and no cables, allowing complete freedom of mobility. The system includes the AH1 Headset Transmitter, along with the CR77 Wireless Receiver.


    • True diversity UHF wireless headset system with PLL frequency control
    • AH1 Headset Transmitter features power/battery LED, power switch and mute switch
    • Qe condenser microphone element is sweat resistant and employs unidirectional cardioid pickup pattern
    • CR77 Wireless Receiver features multi-segment audio level and RF level LED meters
    • XLR and unbalanced 1/4" outputs with mic/line level output switch
    • Squelch and volume control
    • AC adapter and 1/4" cable included

    The AH1 Headset Transmitter is designed to go around the back of your head rather than over the top. This allows the transmitter to be attached directly to the headband, out of the way and completely unobtrusive, while being comfortable and secure during performances. The AH1 offers 14 hours of operation on a single AAA battery. For the AirLine 77 Fitness Headset system, the AH1 Headset Transmitter features Samson's Qe condenser microphone element. The Qe is designed with a unidirectional microphone and cardioid pickup pattern that rejects feedback. It's ideal for group fitness instructors who need a durable headset microphone that will remain in place despite repetitious movement.

    The core of the AirLine 77 Fitness Headset system is the CR77 true-diversity half-rack UHF receiver. It's designed to work flawlessly with AirLine UHF transmitters. Featuring dual tuned, molded antennea, a front panel display with large multi-segment audio level and RF level LED meters, and a large rotary volume knob that allows easy adjustment of audio output, the CR77 takes all of the guesswork out making your wireless system perform. Its synthesized PLL frequency control circuitry keeps the signal locked and true while the LED meters monitor the system's operation. The rear panel features balanced XLR and unbalanced 1/4" outputs allowing flexible connection options. Two CR77 receivers can be rackmounted together in a single space rack (adapter accessory sold separately).

    With AirLine 77 Fitness Headset, you get complete wireless freedom that's good to go anywhere your workout takes you.

  • CR77 Receiver
    Receiving Frequencies 489.050 MHz (K1)
    490.975 MHz (K2)
    492.425 MHz (K3)
    Oscillation Type PLL
    De-emphasis 50 msec
    IF Frequency 10.7 MHz
    A/B Antennas 1/4 Wavelength Rod
    In/Out DC Inlet, Balanced Output, Unbalanced Output
    Display (LED) Receiver A/B (Green), Power On (Red), AF Level (6 segment), RF Level (6 segment) Audio Level
    Level Control Volume, Squelch Level Control
    Operating Temperature 0° C / 50°C
    Operating Voltage 12 Volts ±10%
    Current Consumption 160 mA (all LED lights illuminated)
    Receiving Frequency Range 470-493 MHz
    Sensitivity 18 dBm (@ THD 2%)
    Squelch Sensitivity 0 - 40 dBm (Adjustable)
    Selectivity ±150 kHz (AF Out Ratio -60 dB)
    T.H.D. (Overall) 1% Max (@AF 1 kHz, RF 46 dBu)
    S/N Ratio (Overall) 90 dB (w/IHF-A Filter)
    Residual Noise 90 dBv (w/IHF-A Filter)
    Band Squelch ±40 kHz / ±100 kHz (RF IN: 46 dBu EMF)
    AF Frequency Response 50 Hz - 15 kHz (±3 dB overall)
    Audio Output Level - Unbalanced 0 dBv
    Audio Output Level - Balanced (slide switch selectable) -20 dBm (Line), -40 dBm (Mic)
    Audio Output Impedance - Unbalanced 5 k Ohms
    Audio Output Impedance - Balanced 600 Ohms
    Transmitter (AH1)
    Operating Power Voltage 1.5V Typical, 1.05V Minimum, 2V Maximum
    Current Consumption 60mA Typical
    Battery Life 14 Hours (AAA size battery)
    RF Output Power (5mW) -4dB Minimum, +3dB Maximum
    Frequency Stability -40kHz Minimum, 40kHz Maximum
    Spurious 1μW
    Modulation Factor 13kHz Minimum, 15kHz Typical, 17kHz Maximum, Input 1kHz-20dBv
    Input Impedance (Mic) 2K ohms
    THD < 2% (1 kHz deviation 15kHz)
    Audio Frequency Response 50Hz - 15kHz (±3.5 dB)
    Controls Power Switch, Mute Switch Volume
    Input 2.5mm Stereo Jack
    Indicators Power On (LED Flash), Low Battery (LED On)
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