Uniden UH-048XR - Manual (Page 15)

On the example below only radio 1 and 9 can
communicate or hear each other because they are
using the same or common CTCSS code.
CTCSS Tone Display
This feature allows you to select the preferred display
format for the CTCSS code setting. If frequency
was chosen, then the display in the CTCSS will be
shown as frequency. However, if the number
was
chosen, then the code number will be displayed in
CTCSS function.
1. Press [Function] button
until appears in
the large display.
2. Press [
▲
] or [
▼
] to
change the format.
1 9
2
3
CH1
Code 1
CH1
Code 1
CH1
Code 7
CH1
No CTCSS Code
CODE 1
CODE 7
12