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Operation
• See “Controls and Indicators” (page 2) for button, knob, and key
positions.
•When you turn On your ATLANTIS 250 just after purchasing, it is
automatically tuned to channel 16, the United States Coast
Guard frequency for distress, safety, and calling.
• When you press any button (except PTT), a short tone sounds.
Turning On the Unit and Setting Squelch
Before you turn On the unit, turn the
squelch (SQ) knob fully counterclockwise.
Then, turn On the unit by turning the
Volume/Power (VOL) knob clockwise
until you hear a hissing sound.
Turn the SQ knob clockwise, just until the
hissing sound stops. Use the knob to adjust
to the desired squelch level. Think of the
squelch control as a frequency gate which
controls access to weak or strong signals
depending on its setting.
• To listen to a weak or distant station,
turn the knob
counterclockwise. If reception is poor, turn it clockwise to cut
out weak transmissions.
• If the squelch control is adjusted so that you continually hear a
hissing sound, the unit will not scan properly.
To turn Off the unit, turn the VOL knob counterclockwise until it
clicks.
4
3
2
1
11
SQ
SPKR
MIC
VOL
Noise
Weak Signals
Medium Signals
Strong Signals
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