Divelink-underwater communication-help?!

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AQUAFILM

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Hi there!
Does anyone know what frequency range( Transmitter Band) works with Divelink equipment?
Artur
 
From Dive Link Website:

Single Channel

Transmission Type: Wireless ultrasonic. Modulation: Upper Band no carrier, ref. frequency 31250 Hz.

Signals: Emergency Signal Low power beep at 488 Hz. short burst every 8 seconds into local earphone; communications can continue.

Transmission: 1.0 watts to 10.0 watts peak output power Fully automatic voice operated transmission (VOX) with transmitted speech returned to earphone. Audio pass band 400 Hz. to 5000 Hz. normal voice range.
 
https://www.shearwater.com/products/teric/

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