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CHANNEL
10
In the channel selection menu, the transceiver will offer you
channels A, and B. Depress the PTT button when you hear
the channel you want. After you have made the selection, the
transceiver will repeat your selection then exit.
VOLUME
There are two selections for Volume: "Receive" and "Side".
Receive is how loud you hear incoming transmissions. Side,
or Side Tone, is how loud you hear yourself. Side Tone is also
useful for confirmation that the trasmitter is working. If the unit
has an issue where you are not transmitting, you will not hear
yourself through the Earphone/Microphone Assembly.
SQUELCH
The "Squelch" option is designed to help eliminate background
noise. Unfortunately, there are a lot of noises in the spectrum
used for Wireless Communications. Marine biological noise,
especially shrimp, can be considerable and sounds like "static".
Mechanical noise can come from numerous sources such as
boat engines, compressors, generators, jet skis, and even rain
can affect wireless communications. Anything that produces
sound can be heard though the MilCom if the signal is in the
ultrasonic frequency.
Think of Squelch as a gate that allows only the strong signal of
other divers or the surface station through to your Earphone/
Microphone Assembly.
SCRAMBLER
To turn on or off the "Scrambler" option, depress the PTT button
once when "Scrambler" is heard. Your next choice will be "On" or
"Off". Press the PTT to make the selection you want. Scrambling
enables the divers to have more secure communication while
the option is on. Divers with this feature will be able to hear
normal speech, while divers without will hear unintelligible
transmissions; providing an additional layer of secure voice
communications.
Channel Number
Channel A
Channel B
Frequency
28.500 kHz Lower Sideband
33.0 kHz Upper Sideband
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