Furuno FM-4800 Operator's Manual
![Furuno FM-4800 Radiotelephone manual cover](/images/VzNoTZqAzpmMkHlVKUtSLsQQ/thumbs/thumb175x175.webp)
To perform a factory reset on the Furuno FM-4800, press and hold the 'MENU' button until the setup menu appears. Navigate to 'System Settings' and select 'Factory Reset'. Confirm your selection to reset the device to its default settings.
To connect an external speaker to the Furuno FM-4800, locate the external speaker jack on the back of the unit. Use an appropriate cable to connect the speaker to the jack, ensuring it is securely plugged in. Refer to the user manual for specific impedance requirements.
If experiencing poor reception, check the antenna connection and ensure it is properly secured. Verify that the antenna is not damaged and is suitable for the frequency range. Also, perform a radio check with another station to confirm functionality.
To update the firmware on the Furuno FM-4800, download the latest firmware from the Furuno website. Copy it to a USB drive, insert the drive into the USB port on the radio, and follow the on-screen instructions to complete the update.
To adjust the squelch level, press the 'SQL' button on the front panel. Turn the knob to the right to increase the squelch level or to the left to decrease it, allowing clear reception without background noise.
If the Furuno FM-4800 does not power on, first check the power cable connections and ensure the power source is active. Inspect the fuse and replace it if necessary. If the issue persists, consult a professional technician.
Yes, the Furuno FM-4800 can be connected to a GPS device. Use the NMEA 0183 input to connect the GPS, allowing the radio to receive and display GPS data such as position and time.
To set up a group call, access the DSC menu and select 'Group Call'. Enter the group MMSI number and select the channel for the call. Confirm the details and initiate the call.
Regularly inspect the antenna connection and clean any dust or debris from the radio surfaces. Check the power and speaker connections for corrosion. Perform a radio check periodically to ensure proper operation.
To check the battery status, access the menu and select 'Battery Status' from the options. The display will show the current voltage level, indicating the charge status of the connected battery.