Hear Technologies

specifications
 
     
  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
*Note: Specifications and features subject to change without notice.