Raymarine Ray54 - Manual (Page 31)

Chapter 4: General Operations 21
Note: When you press the 16/9 key, the radio always switches to HIGH pow-
er. You can use the HL/USER key to change to LOW power.
4.8 Selecting the Secondary Priority Channel
The Ray54 enables you to program the 16/9 key to store a Secondary Priority
Channel. The default is CH 9.
If on a working channel, press and hold the 16/9 for greater than 3 seconds
to switch to the Secondary Priority Channel at high power. The default is CH
9.
PRIORITY CH appears in the dot matrix display.
If on primary Priority CH16, press and hold the 16/9for greater 3 seconds to
switch to the Secondary Priority Channel at HI power. The default is CH 9.If
already on the Secondary Priority Channel, press and release the 16/9 key to
switch to Priority Channel 16 at high power.