Standard Horizon HX851E Owner's Manual page 21

TX/BUSY Indicator
This indicator glows green when a signal is being received and red when
transmitting.
When the Emergency feature is activated, this indicator blinks the interna-
tionally-recognized Morse Code "S.O.S" message.
Microphone
The internal microphone is located here.
When transmitting, position your mouth about 1.2 ~ 2.5 cm away
from the small mic hole. Speak slowly and clearly into the micro-
phone.
Speaker
The internal speaker is located here.
NMEA Terminals ( Bottom side )
Connect this NMEA input/output terminal to the GPS or Chart Plotter via
the CD-38 Charger Cradle. Keep these terminals clean.
Battery Pack Lock ( Bottom side )
Turn the Battery Pack Lock to the "OPEN" position for battery removal.
HX851E
NOTE
Page 21