Yaesu VX-451 Operating Manual page 23

G U /D
Press (or press and hold) the assigned Programmable
key to select a different Group of channels. Once the
desired Group is reached, rotate the CH Selector knob
to select the desired channel within the selected
Group.
C U /D
Press (or press and hold) the assigned Programmable
key to select a different channel within the current
Group.
S CH U /D
Press and hold the assigned programmable key causes
the radio to begin stepping (repeatedly) upward or
downward through the channels.
PRI-1/PRI-2
Press (or press and hold) the assigned programmable
key to recall the pre-programmed priority channel
directly. This is pre-programmed by your Vertex Stan-
dard dealer.
VX-450 S O
A
M
O
PRI-2 S
Press (or press and hold) the assigned programmable
key to toggle the current channel to the priority chan-
nel 2 "enable" and "disable".
PRI-2 D
Press (or press and hold) the assigned programmable
key to disable the priority channel 2 of the group
temporarily.
D CH#1 #4
Press (or press and hold) the assigned Programmable
key to recall the Dealer pre-programmed channel di-
rectly.