Using The Count Feature; Using Ctcss; Ctcss Tone Frequencies - Radio Shack Pro-2045 Owner's Manual

20-418.fm Page 30 Wednesday, August 4, 1999 12:42 PM
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 . The scanner dis-
COUNT
plays , the current channel
COUNT
number, and the count number.
3. Repeatedly press
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
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
until disappears.
COUNT COUNT

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.
30
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
Tone Board" on Page 12.

CTCSS Tone Frequencies

to dis-
MANUAL
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:
to
MANUAL
an Optional
XZ 67.0 1B 107.2 6Z 167.9
XA 71.9 2E 110.9
WA 74.4 2A 114.8
XB 77.0 2B 118.8
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
CTCSS
6A 173.8
6B 179.9
7Z 186.2