Uniden UM380BK ユーザーズマニュアル

12

English

noise on the channel. Setting the squelch level higher filters out channel noise and lets only 

actual radio transmissions through.  

While listening to a channel, adjust the SQUELCH knob until the noise is filtered out and you 

can only hear the transmission. If you switch to a channel with a lot of noise or with a weak 

transmission, you may need to adjust the squelch level again. 

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Press 

 and 

 briefly to scroll through the channels one channel at a 

time. Press and hold 

 or 

 to quickly scroll through the channels. 

To make a transmission, press and hold the microphone 

 button. Release the 

button when you’re finished talking to let the other party respond. 

 x

To prevent stuck microphone problems or situations where 

is pushed 

accidentally, the radio limits your talk time to 5 minutes in a single transmission. If you 

talk for over 5 minutes continuously, the display shows RELEASE MIC BUTTON. 

 x

For the best sound quality, hold the microphone about two inches away from your mouth. 

 x

You cannot transmit while the radio is in weather mode or scan mode. 

 x

See the channel lists beginning on page 

 for a list of receive-only channels. 

In most situations, the 1 Watt transmission power is all you need. If you find yourself far 

away from other stations and have trouble getting a response, you may need to boost the 

transmission power from 1 Watt to 25 Watts: 

1.  Select the channel you want to transmit on. 

2.  Push and hold 

 for two seconds. The display shows 25 Watts in the upper left 

hand corner.

3.  The transmit power remains at 25 Watts until you change the setting back. Push and 

hold 

 for two seconds. The display shows 1 Watt. 

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Weak signals

No 

Squelch

Medium 

Squelch

High 

Squelch

Strong signals

Noise