COM-S01R (All Models) Surface Units
12
Range Considerations
In consideration of the barriers to sound transmission underwater (see the
section entitled Barriers to Transmission), use the following guidelines for
optimal range:
Divers should report the position of the thermocline to other divers
and surface personnel.
Avoid trying to transmit through a solid object, such as a ship’s hull
or an underwater cliff. Attempting to do so causes the sound
transmission to be a product of reflections from the surface, the
ocean floor, or underwater objects.
Keep the transducer away from the ocean floor, and as close as
possible to the same depth as the diver.
Chemical Neutralizing Fluid
It is possible that the transmission range can be reduced by a thin layer of
air bubbles blocking the ultrasonic signal at the antenna. In open water, this
will not be the case, but
when used in a pool that has been recently
treated with chemicals
, a thin layer of bubbles can build up on plastic
surfaces. This is prevented by the use of the CHEMICAL NEUTRALIZING
FLUID, DIVELINK part number CNF-01. The antenna is the black knob at
the end of the cable. A coating of this liquid around the antenna cylinder is
all that is required before every use.
