Vertex Standard EVX-539 Operating Manual page 29

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The Transmit Battery Saver helps extend battery life
by reducing transmit power when a very strong signal
from an apparently nearby station is being received.
Under some circumstances, though, your hand-held
radio may not be heard well at the other end of the
communication path, and high power may be neces-
sary at all times.
Press, (or press and hold), the assigned PF key, the
display indicates "TXSAOFF" briefly and disable the
Transmit Battery Saver, if you are operating in a loca-
tion where high power is almost always needed.
Press again, (or press and hold again), the assigned
PF key, the display indicates "TX SA ON" briefly
and the Transmit Saver activates to reduce the trans-
mit power when a very strong signal from an appar-
ently nearby station is being received.
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Press (or press and hold) the assigned PF key to lock
the CH Selector knob, Programmable keys, and PTT
switch. The precise lockout configuration is pro-
grammed by your Vertex Standard Dealer.
FCC ID: AXI11154620
IC: 10239A-11154620
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