User manual UNIDEN LTD1025

[. . . ] Maritime Radio Services Operation Warning! This transmitter will operate on channels/ frequencies that have restricted use in the United States. The channel assignments include frequencies assigned for exclusive use of the U. S. Coast Guard, use in Canada, and use in international waters. Operation in these frequencies without proper authorization is strictly forbidden. [. . . ] Keep the antenna lead as short as possible. Long antenna leads can cause substantial loss of performance for both receiving and transmitting. Locate your antenna as high as possible and clear from metal objects. The reliable range of coverage is a direct function of the antenna height. Select a location that does not allow the radio to be subjected to direct sunlight (including that coming through windows). Select a location that allows free air flow around the heat sink on the rear of the radio. Select a location well away from the ship's compass. Auxiliary speakers also should be located away from the compass. 7 Engine Noise Suppression Interference from the impulse noise generated by the electrical systems of engines is sometimes a problem with radios. The OCEANUS has been designed to be essentially impervious to ignition impulse noise and alternator noise. However, in some installations it may be necessary to take measures to further reduce the effect of noise interference. All DC battery wires, antenna lead, and accessory cables should be routed away from the engine and engine compartment, and from power cabling carrying high currents. In severe cases of impulse noise interference, it may be necessary to install a noise suppression kit. Contact your Uniden Dealer for more information. Antenna Considerations A variety of antennas are available from a number of quality suppliers. It is recommended you draw upon the advice of your Uniden Dealer in determining a suitable antenna for your vessel and range requirements. In general, communication range is increased by using a high-gain antenna placed as high as possible above the water line. Weather Channels are located on Channels 0 - 9. Communication Channels are located on Channels 01 28 and 60 - 88. Instant Channel 16/Channel 9 Communications To access instant Channel 16 or Channel 9 communications, press 16/9. This overrides the channel selected with the CHANNEL L/M selector buttons or any scanning activity. The Channel Display indicates the unit is on Channel 16. Press 16/9 again to access Channel 9 communications. Press and release 16/9 a third time to release the switch (Off). The transceiver will return to the channel selected prior to accessing instant Channel 16/Channel 9 communications. [. . . ] When the PTT is pressed - Tx light comes on and another radio can hear a "click" but no audio is heard. Low current or voltage. Bad mic element. A source of noise is Eliminate the source of While scanning the nearby. the noise or delete the radio stops on a channel from the particular channel all scanner. There is noise on the receiver that the squelch will not eliminate. [. . . ]