Manually Selecting Coast Guard/Distress/Hailing Channels - Uniden MHS550 Owner's Manual

During Key Lock mode, you can adjust only the following
controls:
• PTT switch
• Light/Lock key
• Volume
• Squelch
• 1/.5/5W (Only while pressing and holding PTT.)
If any other control is used, an error tone sounds.
To disable the keypad lock, press and hold LIGHT/LOCK
for about  seconds or turn power off then on. KEYPAD
UNLOCKED appears briefly on the VHF display only. The
LOCKED display disappears.
Note: if the radio receives either a weather alert or decodes
a severe weather S.A.M.E. code transmission, the keypad
automatically unlocks.
Manually Selecting Coast Guard/Distress/Hailing
Channels
In addition to using Triple or
DualWatch to monitor the
Coast Guard/Distress/Hailing
channels, you can manually
select them at any time.
To select your Coast Guard/
Distress/Hailing channel,
repeatedly press 16/9/TRI. At
the first press, the radio switches to Channel 16, the primary
Coast Guard/Distress/Hailing channel. 16 appears on the
screen. Press the key again to switch to Channel 9, the
backup calling channel. 9 appears and NON COMMERCIAL
appears at the bottom for USA channels. Press again to
return to the standard marine channels.
Uniden MHS550 Radio Owner's Manual 45