Standard Horizon VHF/FM Marine Handheld Transceiver HX600S Owner's Manual page 19

[MEM] KEY
Press this key to memorize the selected channel for scanning. When
pressed a "MEM" icon will be shown on the LCD display indicating the
channel has been saved to scan memory. The scan memory is only used
with the Marine and WX channels.
To delete the channel from scan memory, select the channel and press
this key until "MEM" is removed from the display.
BUSY/TX INDICATOR
This indicator illuminates different colors de-
pending on the band that is selected. The
chart to the right shows the colors illuminated
when the signal is received. This indicator
glows red during transmit.
When the Emergency feature is activated, this indicator blinks the inter-
nationally-recognized Morse Code "S.O.S" message.
[DISTRESS] KEY
When radio is programmed with a MMSI and this key is pressed once
and pressed and held again for 3 seconds the radio will transmit a DSC
Distress Call. To send the distress call, see section 7.10 "DIGITAL SE-
LECTIVE CALLING."
HX600S
BAND COLOR
MARINE Blue
AM Green
FM Marine Blue
AIR Yellow
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