Usa, Canadian, And International Channels; Simplex/Duplex Channel Use; Keypad Locking - Standard Horizon HX280E Owner's Manual

6.5 USA, CANADIAN, AND INTERNATIONAL CHANNELS

1. To change from International to Canadian or US Marine Channels, hold
down the [ 16/9 ] key and press the [ DW ] key. The band will change from
International, to Canadian, and to US with each press.
2. "U" appears on the LCD for the USA band, "I" appears
for the International band, and "C" appears for the Ca-
nadian band
3. Refer to the marine channel charts in section 9 "VHF MARINE CHANNEL
ASSIGNMENTS" for allocated channels.

6.6 SIMPLEX/DUPLEX CHANNEL USE

Refer to the VHF MARINE CHANNEL CHART (page 27) for instructions on
use of simplex and duplex channels.
All channels are factory-programmed in accordance with FCC (USA),
Industry Canada and International regulations. The mode of operation
cannot be altered from simplex to duplex or vice-versa. Simplex (ship to
ship) or duplex (marine operator) mode is automatically activated, de-
pending on the channel and whether the USA, International or Cana-
dian operating band is selected.

6.7 KEYPAD LOCKING

In order to prevent accidental channel change, the HX280E's keypad may be
locked out.
Hold down the [ H/L (
PTT, [ SQL ] , and [ H/L (
dentally changed. The "
number of the display, to indicate that the functions are
locked.
Hold down the [ H/L (
dio.
Page 16
NOTE
)] key to lock the keypad (except the
)] keys) so that they are not acci-
" icon will appear on the channel
)] key until the "
" icon disappears to unlock the ra-
HX280E