Standard Horizon Matrix GX2000 Owner's Manual page 101

[ CLR/WX ] Key
Press to CLEAR a function or menu selection. Press and hold to select
NOAA Weather channels. Press and hold again to exit Weather mode
and revert to radio mode.
Secondary use
Hold down the [ 16/9 ] key while pressing the [ WX ] key to change the
mode from USA to International or Canadian.
[ ENT ] Key
This key functions as the enter key.
SPEAKER
The internal speaker is located here.
[DISTRESS] KEY
Used to send a DSC Distress call. Refer to section "11 DIGITAL SELEC-
TIVE CALLING".
GX2000/GX2100 Page 101