Radio Shack 21-1840 User Manual
Page 7
7
array of switches controls the quiet code, while the
right array controls the channel.
Note: You can only communicate with another radio
which uses the same channel and Quiet code as
your radio.
QUIET Code
Frequency
(Hz)
Dip Switch
Setting
without
QUIET
0000
12
100.0
0001
13
103.5
0010
14
107.2
0011
21-1840.fm Page 7 Thursday, August 5, 1999 3:15 PM