59TONE SQUELCH OPERATION10 Tone/DTCS squelch operationThe tone or DTCS squelch opens only when receiving a sig-nal with the same pre-programmed subaudible tone or DTCScode, respectively in FM mode. You can silently wait for thespecified signal using the same tone.D Tone squelch frequency settingqClick [FM] to select FM mode.wClick [TSQL] to turn the tone squelch ON.• “TSQL” appears in the function display.eRight-click [TSQL] to display the [TSQL] setting screen.rClick [ZZ] to select the desired tone squelch frequency.• 51 tone frequencies from 67.0 to 254.1 Hz are available.tCheck the [Reverse Action] check box to mute the receivedaudio signal when the received signal’s tone is matched.• “ ” appears in the function display.yClick the close button ([X]) to close the [TSQL] settingscreen.uWhen the received signal includes a matching tone,squelch opens and the signal can be heard.• When the [Reverse Action] check box is checked in step t, thereceived audio signal is muted.• When the received signal’s tone does not match, tone squelchdoes not open, however, the S-indicator shows signal strength.iClick [TSQL] again to cancel the tone squelch.• “TSQL” disappears.• Available tone squelch frequencies list67.069.371.071.974.477.079.782.585.488.591.594.8097.4100.0103.5107.2110.9114.8118.8123.0127.3131.8136.5141.3146.2151.4156.7159.8162.2165.5167.9171.3173.8177.3179.9183.5186.2189.9192.8196.6199.5203.5206.5210.7218.1225.7229.1233.6241.8250.3254.1