Hear Technologies Freedom Back System - Band-A


The Freedom Back system includes a transmitter with Antenna, wireless Stereo receiver, carrying case, and rack mount kit with an extension cable for mounting the Antenna on the front panel. Freedom Back is available in UA and UB bands making it possible to utilize numerous units on a stage at one time. Band A operates from 584 – 608 MHz and band B operates from 655 – 679 MHz. With 120 channels per band, the user will be able to select frequencies that will not be subject to local TV station interference even after the impending FCC changes!

Transmitter Features:

  • 120 digitally selectable UHF channels
  • Up to 10 transmitters may be used in the same space, depending on local UHF interference
  • Stereo or Mono switch on the rear of the transmitter
  • Back-lit LCD display of Frequency, audio level, group and channel
  • XLR and 1/4 " combo input connectors
  • Built-in automatic Limiter
  • Stereo headphone or in-ear monitor Jack with volume control
  • PAD switch attenuates signal by 12 dB
  • External whip Antenna can be front mounted with included rack ears and extension cable

    Receiver Features:

  • Wireless Stereo belt pack allows freedom to move about the stage
  • Unlimited receivers may be used with one transmitter, when on the same Frequency
  • Back-lit LCD displays Frequency, group, channel, battery indicator, and Mono/Stereo
  • Stereo headphone or in-ear monitor Jack with volume control
  • RF present LED
  • Batteries included


  • Freedom Back System
  • Frequency Range and Transmitter Output Level
  • Bands: UA UB
  • Frequency Range: UA: 584 ~ 608 MHz UB: 655 ~ 679 MHz
  • Transmitter Output Level: 10 dBm
  • Channels: 120 (10 groups of 12 channels)
  • Operating Range: 330 ft (100 m) line of sight, under typical conditions Note: Actual range depends on RF signal Absorption, reflection, and interference.
  • Frequency Response (+/- 3 dB): 40 Hz ~ 16 kHz
  • Total Harmonic Distortion (+/- 30 kHz deviation, 1 kHz tone): <1%
  • Dynamic Range: >90 dB A-weighted
  • Operating Temperature Range: -10°C to +50°C Note: Battery characteristics may limit this range
  • Transmitter
  • Max Audio Input Level: +6 dBV, +18 dBV with -12dB PAD engaged
  • Gain Adjustment Range: 60 dB
  • Input Impedance: 10 K Ohms Unbalanced, 20 K Ohms Balanced
  • Physical
  • Dimensions: 1.5" H x 8.35" W x 3.78" D (38mm H x 212mm W x 96mm D)
  • Weight: 1.34 lbs (0.6 kg)
  • Power Requirements: 12-18 VDC at 300 mA, supplied by external power supply
  • XLR Input: Balanced: Pin 1 = Shield Pin 2 = + Audio Pin 3 = - Audio
  • TRS Input: Tip = + Audio Ring = - Audio Sleeve = Shield
  • Wireless Stereo Receiver
  • Audio Output Level: 100 mW
  • Sensitivity: -94 dB for 30 dB SINAD, typical
  • Image Rejection: >55 dB
  • Physical
  • Dimensions: 3.74" H x 2.56" W x 0.98" D (95mm H x 65mm W x 25mm D)
  • Weight: 3.52 oz (100 g) without batteries
  • Power Requirements: 2 "AA" size Alkaline or rechargeable batteries
  • Battery Life: Approximately 4 ~ 5 hours (Alkaline), load and level dependent

  • Add to Cart:

    • Model: System - Band-A
    • Manufactured by: Hear Technologies



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    Most users do not need a license to operate a wireless microphone system. Nevertheless, operating a microphone system without a license is subject to certain restrictions: the system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device. Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888- CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCCs wireless microphone website at www.fcc.gov/cgb/wirelessmicrophones.