Uniden MHS125 Changing the Channel, Making a Transmission, Boosting the transmission power

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While listening to a channel, adjust the SQUELCH knob until the noise is filtered and you can hear only the transmission. If you switch to a channel with a lot of noise or a weak trans- mission, you may need to readjust the squelch level again.

Note: Setting the squelch level too high may prevent you from hearing weaker transmissions. If you are having difficulty hearing a transmission, try setting the squelch level lower.

Changing the Channel

Press the Channel Up and Channel Down buttons briefly to scroll through the channels one channel at a time. Press and hold the Channel Up or Channel Down button to quickly scroll through the channels.

Making a Transmission

Select the channel you want to transmit on, then press and hold the Push to Talk button. Release the Push to Talk button when you’re finished talking to let the other party respond.

To prevent stuck microphone problems or situations where the Push to Talk button is pushed accidentally, the radio limits your talk time to 5 minutes in a single transmission.

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

See the channel lists starting on page E-23 for a list of receive-only channels.

Boosting the transmission power

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 2.5 Watts or 5 Watts:

1. Select the channel you want to transmit on.

E-18	Uniden MHS125 Radio Owner’s Manual

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Contents MHS125 Making a Distress Call Speak slowly clearly calmlyFaire un appel de détresse Parlez lentement clairement calmementTable of Contents Features Introduction Transmitter power level select  Dual, Triple and Quad Watch operationGetting Started What’s includedFront view Parts of the MHS125Back view Knob Turn clockwise to Turn counter-clockwise to ChargerButton Press to Press and hold to Display icons and what they mean Reading the displayIcon What it means Watch mode What it does To turn it on/off Mode What it does Use it when you To turn it Want to On/offHow It Works Normal mode operation Normal mode with Weather Alert WatchNormal mode with Triple Watch or Dual Watch Normal mode with Quad WatchUsing the radio in scan mode Scan mode operation08 10 11 Both Weather Alert and Triple/Dual Watch in scan mode Scan mode with Weather Alert WatchScan mode with Triple Watch or Dual Watch 08 10Using the radio in weather mode Weather modeWeather mode with Weather Alert Watch Weather mode with Triple Watch or Dual Watch Setting Up the HardwareInstalling the Battery Attaching the AntennaUsing the Alkaline Battery Case Follow these steps to use the alkaline battery caseCharging the Battery Mounting the ChargerImportant notes on charging the battery Attaching the Belt ClipChanging the Volume Using Your RadioSetting Squelch Level Changing the Channel Boosting the transmission powerMaking a Transmission Setting the UIC Channel Mode Using the Strobe SOS LightTurning the Key Beep On and Off Maintenance and TroubleshootingUsing the External Speaker/Mic Jack With SOS LED Do This For this This stateProblem Common QuestionsProblem Things to Try SpecificationsGeneral Transmitter Channels and Frequencies MHzUS channel frequencies and names ReceiverUS Marine Channels RX Freq TX Freq Status Name Canadian channel frequencies and names Canadian Marine Channels RX Freq TX Freq Status NameCanadian Marine Channels RX Freq TX Freq Status Name International channel frequencies and names International Marine Channels RX Freq TX Freq Status NameInternational Marine Channels RX Freq TX Freq Status Name Weather channel frequencies and names ChannelRegulations and Safety Warnings Maritime Radio Services Operation Basic Radio GuidelinesFCC/Industry Canada Information Body-Worn Operation Lithium Ion Battery Warning Three Year Limited Warranty Page Page QUESTIONS?

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