Dual Watch; Tri Watch; Emergency Channel 16 - Standard Horizon Hx500s Owner's Manual

7.4 DUAL WATCH

The Dual Watch feature allows the radio to watch for a transmission on the
priority channel and another selected Marine channel until a signal is re-
ceived. The priority channel is determined in section "7.3 PROGRAMMABLE
PRIORITY SCAN".
1. To start the Dual Watch feature, select a channel to be dual watched with
the priority channel and press and hold the
[ SCAN ] key. The radio checks the priority chan-
nel for voice traffic every one second. A small "DW"
icon is will be shown blinking on the left of the
display during scanning.
2. To cancel the Dual Watch feature, press the [ SCAN ] key.

7.5 TRI WATCH

Note:To use this function the radio must be setup to enable the Tri-watch
function. Refer to Section 9 "MENU ( "SET" ) MODE".
The TRI Watch feature allows the radio to watch for a transmission on the
priority channel, and the secondary calling channel (channel 09) and an-
other selected Marine channel until a signal is received. The priority channel
is determined per the discussion in section "7.3 PROGRAMMABLE PRIOR-
ITY SCAN".
1. To start the TRI Watch feature, select a channel and press and hold the
[ SCAN ] key. The radio checks the priority channel, CH09 and the se-
lected channel for voice traffic. A small "DW" icon is will be shown blink-
ing on the left of the display during scanning.
2. To cancel the TRI Watch feature, press the [ SCAN ] key.

7.6 EMERGENCY CHANNEL 16

1. To select the emergency channel, press the [ 16/9 ] key from any channel.
2. If you cannot contact anyone on channel 16, switch to another channel.
3. See section "8.1 EMERGENCY ( CHANNEL 16 USE ) " for additional emer-
gency operating practices.
4. To recall the previously-used channel when you are finished on channel
16, press the [ 16/9 ] key again.
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