357 ENHANCED COMMUNICATONSFM CTCSS OPERATIONYou may sometimes want to hear calls only fromspecific persons. When using FM mode, theContinuous Tone Coded Squelch System (CTCSS)allows you to ignore (not hear) unwanted calls fromother persons who are using the same frequency. ACTCSS tone is subaudible and is selectable fromamong the 38 standard tone frequencies. Select thesame CTCSS tone as the other stations in yourgroup. You will not hear calls from stations other thanthose using the same CTCSS tone.Note: CTCSS does not cause your conversation to be private. Itonly relieves you from listening to unwanted conversations.1 Press [A/B] to select VFO A or VFO B.• “tA” or “tB” appears to show which VFO isselected.2 Select a band.3 Select an operating frequency.4 Press [FM/ AM/ NAR] to select FM mode.• “FM” appears.5 Turn the SQL control to adjust the squelch.6 Press [6/ CTCSS/ SEL] to switch the CTCSSfunction ON (or OFF).• “CT” appears when the function is ON.7 Press [FUNC], [6/ CTCSS/ SEL].• The current CTCSS frequency appears. Thedefault CTCSS frequency is 88.5 Hz.8 Turn the MULTI/ CH control to select theappropriate CTCSS frequency.• The selectable CTCSS frequencies are listed inthe following table.9 Press [FUNC], [6/ CTCSS/ SEL] to complete thesetting.You will hear calls only when the selected tone isreceived. To answer the call, press [SEND] or pressand hold Mic [PTT], then speak into the microphone.Skip steps 7 and 8 if you have already programmedthe appropriate CTCSS frequency.Note:uWhen using split-frequency operation, select FM mode onboth VFOs to use CTCSS.uUse Nos. 01 to 38 shown in the table above when selectingCTCSS frequencies via Computer Control {page XX}.uYou can select a CTCSS frequency independent of a tonefrequency.uYou cannot use the CTCSS function with the Tone or DCSfunctions.CTCSS FREQ. ID SCANThis function scans through all CTCSS frequencies toidentify the incoming CTCSS frequency on a receivedsignal. You may find this useful when you cannotrecall the CTCSS frequency that the other persons inyour group are using.1 Press [FUNC], [6/ CTCSS/ SEL].• The current CTCSS frequency appears.2 Press [SCAN/ SG. SEL] to activate the CTCSSFreq. ID scan.• “C T” blinks and every CTCSS tone frequencyis scanned. When the CTCSS frequency isidentified, the transceiver stops scanning andthe identified frequency is displayed.• Press [SCAN/ SG. SEL] to resume scanning.• Press [FUNC], [6/ CTCSS/ SEL] to quit thescanning.Note: Received signals are audible while scanning is in progress..oN .qerF)zH( .oN .qerF)zH( .oN .qerF)zH( .oN .qerF)zH(10 0.76 11 4.79 12 5.631 13 8.29120 9.17 21 0.001 22 3.141 23 5.30230 4.47 31 5.301 32 2.641 33 7.01240 0.77 41 2.701 42 4.151 43 1.81250 7.97 51 9.011 52 7.651 53 7.52260 5.28 61 8.411 62 2.261 63 6.33270 4.58 71 8.811 72 9.761 73 8.14280 5.88 81 0.321 82 8.371 83 3.05290 5.19 91 3.721 92 9.97101 8.49 02 8.131 03 2.681