CTCSS/DCS/EPCS OPERATION

TONE SEARCH SCANNING

In operating situations where you don’t know the CTCSS or DCS tone being used by another station, you can command the radio to listen to the incoming signal and scan in search of the tone being used. Two things must be remembered in this regard:

€You must be sure that your repeater uses the same tone type (CTCSS vs. DCS).

€Some repeaters do not pass the CTCSS tone; you may have to listen to the station transmitting on the repeater uplink (input) frequency in order to allow Tone Search Scanning to work.

To scan for the tone in use:

1.Set the radio up for either CTCSS or DCS Decoder operation (see the previous dis- cussion). In the case of CTCSS,

“TSQ” will appear on the display; in the case of DCS, “DCS” will appear on the display.

2.Press the key, then press the

key to recall the Set Mode Item 99: TONE FREQUENCY

when CTCSS is selected, or Menu Item 26: DCS CODE during DCS operation.

3.Press the key to enable adjustment of the selected Set Mode Item.

4.Press and hold in the key, the “TONE SEARCH” notation will appear, release the

key to start scanning for the incoming CTCSS or DCS tone/code.

5.When the radio detects the correct tone or code, it will halt on that tone/code, and

audio will be allowed to pass. Press the key to lock in that tone/code, then press

the key to exit to normal operation.

If the Tone Scan feature does not detect a tone or code, it will continue to scan indefinitely. When this happens, it may be that the other station is not sending any tone. You can press the PTT switch to halt the scan at any time.

You can also press the key during Tone Scanning to listen to the (muted) signal from

the other station. When you release the key, Tone Scanning will resume after about a second.

Tone Scanning works either in the VFO or Memory modes.

VX-8R OPERATING MANUAL

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