User manual HUMMINBIRD DC 5

[. . . ] SECTION ONE LICENSE INFORMATION It is the responsibility of the user of this radio to ensure that all appropriate licenses have been obtained prior to operation of the radio. The FCC Rules and Regulations Part 80 document contains information on the licensing and operation of VHF radios in the United States. Different applications have different licensing requirements; however in general, if your boat already has a licensed fixed mount VHF radio, no additional license may be required. A FCC form 506 application for ship radiotelephone license is included with this manual. [. . . ] The PTT (push to talk) switch is located on the side of the radio. The function control keys are located on the front of the radio. - Most control inputs result in audible, tactile, and visual feedback for positive actuation in loud environments. POWER AND VOLUME CONTROLS To power the DC5s for operation, turn the Power/Volume knob clockwise past the detent. The display will illuminate indicating that power is supplied to the DC5s unit. Continue turning the Volume knob until the desired audio volume is achieved. It may be necessary to adjust the squelch first, then adjust the volume once a transmission is received. To turn the DC5s off, turn the Power/Volume knob counter- clockwise until the detent is felt and the display is blank. ADJUSTING THE SQUELCH The squelch is commonly used to eliminate static and background noise from being heard. To adjust the squelch, ensure that the unit is powered and sufficient volume is available to hear the speaker. Turn the Squelch knob counter-clockwise as far as it will go. Wait for a period when no transmission is being received, and turn the Squelch slowly clockwise until the background static is eliminated. The squelch allows silent operation of the DC5s until a transmission is received. If the Squelch is adjusted too high, only the strongest transmissions will be heard. If the Squelch is adjusted too low, intermittent static and noise will be heard. USING THE PTT The Push To-Talk switch is located on the side of the DC5s and is easily accessible to both left and right hand users. To activate the PTT, simply press the raised portion of the switch. A tactile click will be felt, and the display will show the TX (transmit) symbol indicating that the unit is transmitting. Care should be used to prevent the inadvertent actuation of the PTT switch. When storing the radio while powered, ensure that nothing comes into contact with the PTT. Inadvertent actuation will transmit a signal causing interference with other users, possibly interfering with an emergency broadcast, and will quickly drain the battery as well. SELECTING THE BAND Upon power-up, the last selected band will be in operation. The band, USA, INT (International), or WX (weather) is indicated on the display. Pressing the BAND button will toggle between these three bands. As with all controls, an audible chirp will be heard when the button is pressed. SELECTING THE CHANNEL Within each of these three bands there are a number of discrete channels. These channels are selected using the UP and DOWN arrow keys. Pressing either key once will select the next higher or lower channel. Pressing and holding either arrow key will scroll through all available channels. USING DUAL WATCH Channel 16 is the normal monitoring channel for all maritime applications. [. . . ] The case is sealed to prevent water intrusion and special tools are required for reassembly. Repairs should be performed by authorized Humminbird technicians only. Periodically exercise the battery from full charge to fully drained. Keeping the battery continually at full charge will create a memory effect which reduces the charge life. The battery pack contains Nickel-Cadmium batteries. [. . . ]