The Ocean Technology Systems (OTS) Aquacom STX-101SB is a high power portable surface transceiver designed to operate with the BELL 200 backup communications system. Using a heavy-duty 35 foot transducer cable, the Aquacom® STX-101SB has 70 watts of power to ensure clear communications in virtually all conditions. The Aquacom STX-101SB is equipped with one channel, either 8.0875 kHz (USB) or 25 kHz USB — depending on whether it is the low-frequency or high-frequency version. This state-of-the-art surface station has special circuits designed to allow all listeners within hearing range, clean, clear communications from all divers within range. The Squelch is easily adjusted from the front panel. The unit comes with a hand-held microphone and a comfortable headset is available which will allow the user to listen and talk under noisy conditions. This compact, self contained system has been field proven by many dive teams around the world. A 110 watt, two-channel, rack mounted version is available as the Aquacom® STX-101SBR.