Humminbird VHF255SW manual Selecting HIGH/LOW Power, Transmitting and Receiving

4. SELECTING HIGH/LOW POWER

You must press and release the HI/LO key on the microphone handset or the HI/LO/MEM key on the radio base station to toggle the transmit power between High and Low. Select HI (High Power Transmit) for long-range communications, and LO (Low Power Transmit) for shorter-range communications to save battery power.

To change the transmit power:

1.Press the HI/LO key on the microphone handset or the HI/LO/MEM key on the radio base station to toggle between High and Low transmit power. When the radio is operating at high power, the HI icon appears on the LCD, and when operating at low power, the LO icon appears on the LCD.

5.TRANSMITTING AND RECEIVING

Press and hold the Push-To-Talk (PTT) key on the microphone handset to transmit (speak) and release the PTT key to receive (listen) on the selected channel.

To transmit and receive:

1.Press and hold the PTT key, then speak into the microphone handset to transmit. The TX icon will appear on the LCD while you are transmitting.

2.Release the PTT key to listen.

NOTE: Before transmitting, make sure that the channel you have selected is not a receive- only channel.

6. SELECTING U.S./INTERNATIONAL/CANADIAN BANDS

When operating in U.S. waters, your radio should be set for the U.S. band; when operating in Canadian waters, the radio should be set for the Canadian band; when operating in International waters, the radio should be set for the International band.

To select a band:

1.To select a band, press the BAND/SAVE key. The LCD will display the U, I or C icon (for U.S., International, or Canadian bands, respectively). Press the BAND/SAVE key again to proceed to the next band, and repeat this until the desired band is displayed.

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