Reception; Antenna Installation - Standard Communications Horizon HX255S Owner's Manual

4.2

RECEPTION

1. Turn the POWER /VOLUME CONTROL knob on.
2. Turn the POWER /VOLUME CONTROL knob to the desired level.
3. Turn the SQUELCH CONTROL knob fully counterclockwise. This
state is known as "squelch off".
4. Turn up the POWER /VOLUME CONTROL knob until the noise or
audio from the speaker is at a desired level.
5. Select a channel that has no signal being received (no one is
transmitting on the channel) and only noise is heard.
6. Slowly turn the SQUELCH CONTROL knob clockwise and stop
immediately after the noise disappears. This condition is known as
the "Squelch Threshold". If the knob is turned clockwise past this
point, weak signals may not be received. No noise and no signal
are heard until a signal is received that exceeds the squelch
threshold.
7. To change channels, press the
slight adjustment of the squelch threshold is needed, some
channels have a higher noise level than others.
Please refer to the OWNER'S MANUAL SUPPLEMENT for a
complete listing of all USA, International and Canadian VHF
Marine channels and their use.
8. If necessary, press the
automatically turns off in about 5 seconds. To turn off the lamp
sooner, press the
HX255S
Figure 4. Antenna Installation
key again.
Owner's Manual
or
key to turn on the lamp. The lamp
key. Sometimes, a
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