Raymarine Ray48 manual Operating Procedures

3.3 OPERATING PROCEDURES

3.3.1Turning the Power On

1)Rotate the ON/OFF/VOLUME control clockwise to turn the radio on.

NOTE

When the Power is on, the synthesizer automatically programs for the USA channel frequencies and selects the calling channel 16. (Refer to 16 PLUS operation to change this channel.)

Setting the Volume

1)Rotate the SQUELCH control slowly counterclockwise. Background noise will be heard.

2)Rotate the VOLUME control for the desired volume level.

Setting the Squelch

1)Rotate the SQUELCH control slowly clockwise until the background noise ceases.

Setting the Power Output

1)Press the "MON/1/25" key for two seconds to toggle between 1 Watt output and 25 Watt output. When "1 W" is displayed, the output power is 1 watt.

If "1 W" is extinguished, 25 watts is being output. The choice of power output is dependent upon the distance of transmission and transmitting conditions.

In certain US harbors and on certain channels, the FCC requires the power to be limited to 1 watt. On these "required" channels, the radio automatically selects the 1 Watt power output when the channel is selected.

NOTE

Channels 13 and 67 are restricted to 1 Watt operation but may be overridden in emergencies. To obtain 25 Watt output on these channels, while in transmit mode (pressing the PTT switch), press and hold the MON/1/25 key. As long as the MON/1/ 25 key is held, power output will be 25 Watts. When the key is released, the radio reverts back to 1 Watt as indicated on the LCD.

Selecting the Channel

1)To select the appropriate channel, press the [▲] or [▼] channel select keys. Refer to Table 6-1 to select your "working" channel.

To Transmit

1)Select the desired mode (INT or USA) by pressing and holding the WX/INT key for two seconds. When "INT" is displayed, International mode is selected. When extinguished, USA mode is active. Then press the Push-To-Talk switch and speak into the microphone using a clear normal voice.

2)When the power is initially turned on, press the Push-To-Talk switch, the radio will be ready for transmission on CH 16 or a user selected priority channel (16 PLUS).

As a safety feature, the Ray48 is designed to inhibit transmission if the Push-to-Talk switch is pressed continuously for over five minutes. If this occurs, audible beeps will sound and "TO" (time out) blinks on the LCD until the Push-To-Talk switch is released. After releasing the Push-To-Talk switch, the radio is ready for reception.

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