Raymarine Ray48 - Manual (Page 18)

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2) Memory Scan Mode
If one or more channels are stored in memory, when the SCAN key is pressed,
"SCAN" and "MEM" will begin to flash simultaneously on the LCD. If no other key is
pressed, the radio will begin scanning all channels currently in memory in three
seconds. As with All-Scan, if a signal is received, the scan will stop on the receiving
channel until the signal is lost for five seconds or the SCAN key is pressed. To cancel
memory scan, press the SCAN key while the radio is scanning.
If you have one or more channels in memory and want to initiate All-Scan, perform
the following:
Press the SCAN key. "SCAN" and "MEM" will flash on the LCD. Press the SCAN key
again within three seconds and "MEM" will disappear from the LCD leaving only "SCAN"
flashing. All-Scan will begin in three seconds if no other key is pressed.
3.3.5 Master Reset
To perform a master reset, press and hold the 16 PLUS key while turning the unit on.
This feature clears all channels from memory and programs the 16 PLUS feature back to
channel 16.
3.3.6 Monitor Mode
Before entering the Monitor Mode you must first select the WX channel you wish to
monitor for the weather alert tone. Next, you must also select a working channel to be
monitored for traffic. (Refer to section 3.3 for instruction on channel section).
1) Press WX/INT, then scroll to the desired weather channel with the arrow keys.
2) Press the 16 PLUS key to exit the weather band and return to normal mode.
3) Use the arrow keys to select the desired working channel.
4) Press the MON/1/25 key to begin monitor mode. Press the MON/1/25 key again to
cancel Monitor Mode.
As an example, let's say we have selected channel 68 as our working channel, WX2 as our
weather channel and the 16 PLUS key is programmed for channel 16.
When MON/1/25 is pressed, the radio begins to scan Priority Channel 16, the working
channel 68 and weather channel WX2.
Working Channel
If a signal is received on CH68, the scan will stop on CH68, but continue to monitor 16
PLUS and the selected weather channel every five seconds.
16 PLUS (priority) Channel
If while scanning, a signal is received on the designated 16 PLUS channel, the scanning will
stop on 16 PLUS as long as the signal is being received. If the signal ceases for more than
five seconds, the scanning will continue.
Weather Channel
Until a weather alert tone signal is received on WX2, the scan will stop on WX2 briefly, but
will not give any audio output. When a weather alert tone (1050Hz) is received, the monitor
will stop and an audible alarm will sound. When the audio alert ends in five seconds, the
emergency weather broadcast will be heard. To silence the alarm, simply push any key.