Radio Shack PRO-99 - Manual (Page 56)

56
K
EY
L
OCK
Once you program your scanner,
you can protect it from accidental
program changes by turning on
the key lock feature. When the
keypad is locked, the only controls
that operate are
FUNC , х / о , SQ ,
and VOL .
You cannot activate the key lock
while you are entering a frequency
into a channel.
1. To turn on the key lock, press
FUNC and then
х
/
о
.
Key locked. appears for about 1
second. Key locked. appears
when you press any key after
locking the keypad, and the
scanner sounds the low
pitched Invalid tone.
2. To turn off the key lock, press
FUNC and then
х
/
о
. The
scanner beeps three times
and
Key unlocked. appears in
the scanner's display.
T URNING THE K EY T ONE
O
N AND
O
FF
The scanner is preset to sound a
tone each time you press one of
its keys (except
х / о ). You can
turn the key tone off or back on.
1. Press and hold FUNC for
about 2 seconds. The menu
screen appears.
2. Press 8 and then 2 to select
2:Key Tone .
3. Press 1 to select 1:Key Tone On ,
or press 2 to select
2:Key Tone Off .
20-515Change01_04.fm Page 56 Friday, January 16, 2004 1:14 PM