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17Uniden MHS450 Radio Owner’s Manual
1. Antenna — Removable, and exible for convenience.
Watertight connector for reliability.
2. Watertight Ext. Speaker/Mic Jack — Unscrew the
cap and insert an approved mic/speaker to maintain
submersability.
3. Volume-Power ON/OFF Control - Rotate to turn on
power and set volume to a comfortable listening level.
4. Squelch Control — Rotate clockwise until the signal is
heard but not the noise.
5. Wrist Strap Anchor — Thread and loop the supplied
wrist strap to conveniently carry the radio.
6. WX/ALERT — Press to change the mode to Weather
Channel reception. Press and hold to activate the Weather
Alert feature.
7. SCAN/MEM — Press to set Memory Channel SCAN on or
off. Press and hold to store the current channel into memory.
8. 1/2.5/5w — Press to select the output power unless xed
by regulations.
9. 16/9/TRI — Press to switch immediately to the Coast
Guard/Distress/Hailing channel 16 or the secondary Calling
Hailing channel 9. Press and hold to enable Triple Watch or
Dual Watch monitoring.
10. MENU — Press to display the user-settable menu
options.
11. ENTER — Press to select or store a chosen menu
option.
12. ▲▼ — Press to select channels above or below your
currently selected channel. Press and hold to change
channels rapidly. Press to scroll through Radio Menu options.
13. Belt Clip —Squeeze and attach to your belt for
convenient carrying.
14. PTT — Press to transmit.