5
BASIC OPERATION
5-12
■ Key Lock function
Activate to prevent accidental frequency changes and
unnecessary function access.
➥ Hold down [LOCK] for 1 second to turn the Key
Lock function ON or OFF.
• When the Key Lock function is ON and the locked key or
dial is pushed or rotated, “LOCK ON” appears.
• [ ], [LOCK] , [PTT], [SQL] and [VOL] can be used
while the lock function is ON.
The function is ON
The function is OFF
■ ATT (AIR) function
The attenuator reduces signal levels to prevent audio
distortion. This is useful when the transceiver receives
a very strong air band signal, or it is in very strong elec-
tromagnetic fields such as from a broadcasting station
near your location.
The attenuation is about 30 dB, and usable only in the
AIR band.
q Push [QUICK] to open the Quick Menu screen.
w Push D-pad() to select “ATT (AIR),” and then push
D-pad(Ent).
e Push D-pad() to select “30dB.”
r Push D-pad(Ent) to set, and exit the Quick Menu
screen.
• “ATT” appears.
TIP: Either or both the squelch control and volume
control can also be locked in the Function menu.
(MENU > Function > Key Lock) (p. 16-75)
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