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Transmitter Band B


 
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  Hear Transmitter Band B
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Product Code: FBTB
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Hear Transmitter Band B

Freedom Back is a high quality UHF wireless stereo in-ear monitor system designed to replace loud, bulky and unsightly stage monitors while allowing the talent the freedom to move about the stage. It is a perfect companion to our highly successful Hear Back personal monitor mixer system and the acclaimed Mix Back matrix monitor mixer.

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

  
  Freedom Back System  
  Frequency Range and Transmitter Output Level  
  Bands:
UA
UB
  
  Frequency Range:
584 ~ 608 MHz
655 ~ 679 MHz
  
  Transmitter Output Level:
10 dBm
10 dBm
  
  Channels:
120 (10 groups of 12 channels)
(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  
0 dBu = 0.775 Vrms

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