Standard Horizon HX890 Owner's Manual page 23

VOL+ key
Press to increase the speaker audio volume level.
VOL− key
Press to decrease the speaker audio volume level.
16/S key
Pressing this key immediately recalls channel 16 from any channel
location. Holding the key down recalls the SUB channel (The default
setting is channel 9). Pressing this key again reverts to the previous
selected working channel.
CLR key
Press this key to cancel a menu selection and/or keypad entry.

MIC/SP jack (Top side)
The jack accepts the optional: MH-73
the SSM-64A VOX Headset; the SSM-10A Submersible Speaker/Micro-
phone; or the SSM-55A Earpiece/Microphone. When this jack is used, the
internal speaker and microphone are disabled.

DATA jack (Right side)
Use the USB micro type B jack to output the NMEA data, configure the
transceiver settings and download the GPS logger data.
DISTRESS key (Right side)

Used to send a DSC Distress Alert. To send the Distress Alert, refer to
section "10.2.1 Transmitting a DSC Distress Alert".

Soft keys
The 3 programmable soft keys can be customized using the Setup Menu
mode described in section "13.8 SOFT KEYS". When one of the soft keys
is pressed briefly, the functions will appear above each key on the display.
Strobe light indicator
When the Emergency feature is activated, this indicator blinks the interna-
tionally-recognized Morse Code "S.O.S" message. When the Water Hazard
feature is activated, this indicator illuminates if the transceiver is submerged.
Speaker
The internal speaker is located here.
Battery pack lock (Bottom side)
Turn the Battery Pack Lock to the "UNLOCK" position for battery removal.
Submersible Speaker/Microphone;
A4B
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