The Thelma Biotel Focus, Direction & Amplification field kit is an acoustical reflector which slips over the standard Live transceiver. It is delivered with a standard telescopic boompole for easy handling. With the reflector, the amplification of signals is strong around +-15 degrees in reference to the target. Outside of 60 degrees from the target, the signal becomes weak or completely muted.


  • Acoustic reflector to slip over standard Live transceiver
  • Provides the direction of acoustic signal targets
  • Amplifies acoustic signals for increased range


  • Communication with receivers deployed on deeper locations
  • Communication with receivers in challenging conditions
  • Compass bearings of deployed receivers or gear
  • Bearing of fish tags