Uniden MHS550 사용자 설명서

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Uniden MHS550 Radio Owner’s Manual

The radio sounds several tones designed to convey 

important information. Become familiar with them to use the 

radio more effectively.
Power On — a rapidly rising tone sounds to confirm that 

power is applied.
Keypad Touch Single Tone — sounds to confirm you have 

pressed a single key
Keypad Touch Double Tone — sounds to confirm you 

pressed and held down a key for 2 seconds.
Error Tone — sounds to indicate an invalid key press or op-

eration.
PTT Error Tone — sounds to indicate an invalid press of the 

PTT switch.
WX ALERT Tone — a rising and falling tone sounds when a 

weather alert is received and decoded.
SAME Tone —  sounds a confirmation tone when entering a 

FIPS code.
PTT Time Out Tone (PTT Error Tone) — sounds when 

your continuous transmitting time exceeds 5 minutes. Also 

sounds if you attempt to transmit with low power battery. If 

the battery icon continues to blink once you stop pressing the 

PTT key, you must recharge/replace the currently installed 

battery(s)

Your Uniden MHS550 comes equipped with a Lithium Ion 

battery which snaps into the back of the radio and secures 

with a latch. The battery has a minimal charge when shipped. 

Before use, place the radio in the Charging Cradle and 

charge the battery for four hours. Note that unlike some other 

types of rechargeable batteries, a Lithium Ion battery can be 

“topped-off” as needed with no degradation of performance.