Radio Shack PRO-2045 owner manual Using the Count Feature, Using Ctcss, Ctcss Tone Frequencies

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

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