18 Uniden MHS550 Radio Owner’s Manual1. Antenna —Flexible for convenience. Heavy duty coveringto ensure long-term endurance.2. Watertight Ext. Speaker/Mic Jack — Unscrew thecap and insert an approved mic/speaker for convenientoperation.3. Volume-Power ON/OFF Control - Rotate to turn onpower and set volume to a comfortable listening level.4. Squelch Control — Rotate clockwise to hear strongsignals without noise or static and weak signals with aminimum level of noise..5. Wrist Strap Anchor — Thread and loop the supplied wriststrap to conveniently carry the radio.6. WX/ALERT — Press briefly to change the mode toWeather Channel reception. Press and hold to activate theWeather Alert feature.7. SCAN/MEM — Press to set Normal Channel Scan on oroff. Press and hold to store or remove the current channelinto and out of memory.8. BAND/1/2.5/5W — Press briefly to change bands.Press and hold to select the output power unless fixed byregulations.9. 16/9/TRI — Press briefly to switch to the Coast Guard/Distress/Hailing Channel 16 or the secondary Calling HailingChannel 9. Press and hold to enable TripleWatch or DualWatch monitoring.10. MENU — Press to display the user-settable menuoptions.11. ENTER — Press to select or store a chosen menuoption.12. ▲ and ▼ — Press to select channels above or below yourcurrently selected channel. Press and hold to change channelsrapidly. Press to scroll through a band’s menu selections.13. Belt Clip —Squeeze and attach to your beltfor convenient carrying.