30
USING THE COUNT
FEATURE
The scanner can count the number of
times it has detected a transmission
on each channel since you turned on
the scanner or cleared the count.
1. While the scanner is scanning,
press
MANUAL
.
2. Press
COUNT
. The scanner dis-
plays
COUNT
, the current channel
number, and the count number.
3. Repeatedly press
MANUAL
to dis-
play each channel and the num-
ber of times the scanner detected
a transmission on that channel.
Note: If
CHAN
is on the display,
you can use the rotary tuner
instead of pressing
MANUAL
to
display the channel count.
While you view the count for a chan-
nel, you can zero the count by press-
ing
CLEAR
.
To turn off the count display, press
COUNT
until
COUNT
disappears.
USING CTCSS
CTCSS is frequently used when two
different services or groups use the
same frequencies, but are relatively
close together. Each group sets their
transmitters to different CTCSS fre-
quencies, and sets their receivers to
only let them hear transmissions that
include the correct CTCSS frequency.
This helps to avoid radio interference
between the groups.
You can use the CTCSS feature to
lock out undesired transmissions and
monitor only those which transmit a
specific CTCSS tone.
Note: You must install a CTCSS tone
board before you can use this feature.
“Installing an Optional CTCSS
Tone Board” on Page 12.
CTCSS Tone Frequencies
The following table shows the avail-
able CTCSS tone frequencies and the
letter codes commonly used in the in-
dustry to refer to the frequencies:
XZ 67.0
1B 107.2 6Z 167.9
XA
71.9
2E 110.9 6A 173.8
WA
74.4
2A 114.8 6B 179.9
XB
77.0
2B 118.8 7Z 186.2
WB
79.7
3Z 123.0 7A 192.8
YZ
82.5
3A 127.3 M1 203.5
YA
85.4
3B 131.8 M2 210.7
YB
88.5
4Z 136.5 M3 218.1
ZZ
91.5
4A 141.3 M4 225.7
ZA
94.8
4B 146.2 M5 233.6
ZB
97.4
5Z 151.4 M6 241.8
1Z
100.0 5A 156.7 M7 250.3
1A 103.5 5B 162.2
20-418.fm Page 30 Wednesday, August 4, 1999 12:42 PM
