Yaesu FT-8800R Operating Manual

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29FT-8800R Operating ManualCTCSS O PERATIONMany repeater systems require that a very-low-frequency audio tone be superimposed onyour FM carrier in order to activate the repeater. This helps prevent false activation of therepeater by radar or spurious signals from other transmitters. This tone system, called“CTCSS” (Continuous Tone Coded Squelch System), is included in your FT-8800R, and isvery easy to activate.CTCSS setup involves two actions: setting the Tone Mode and then setting of theTone Frequency. These actions are set up by using the Set mode #41 (TONE M)and #40 (TONE F).1. Press the [SET] key momentarily to enter the Set mode.2. Rotate the “Main” band DIAL knob to select Menu #41 (TONE M).3. Press the “Main” band DIAL knob momentarily, then rotate the “Main” band DIAL knobso that “ENC” appears on the display; this activates the CTCSS Encoder, which allowsrepeater access.You may notice an additional “DCS” icon appearing while you rotate the“Main” band DIAL knob in this step. We’ll discuss the Digital Code Squelchsystem shortly.4. Rotating the “Main” band DIAL knob one more click clockwise in step “3” above willcause “ENC.DEC” to appear. When “ENC.DEC” appears, this means that the Tone Squelchsystem is active, which mutes your FT-8800R’s receiver until it receives a call fromanother radio sending out a matching CTCSS tone. This can help keep your radio quietuntil a specific call is received, which may be helpful while operating in congested areas.5. When you have made your selection of theCTCSS tone mode, press the “Main” bandDIAL knob momentarily, then rotate the“Main” band DIAL knob one click counter-clockwise to select Menu #40 (TONE F).This Menu selection allows setting of theCTCSS tone frequency to be used.6. Press “Main” band DIAL knob momentarilyto enable adjustment of the CTCSS fre-quency.7. Rotate the “Main” band DIAL knob until the display indicates the Tone Frequency youneed to be using.8. When you have made your selection, press and hold in the “Main” band DIAL knob for1/2 second to save the new setting and exit to normal operation.CTCSS/DCS O PERATIONCTCSS TONE FREQUENCY (Hz)67.0 69.3 71.9 74.4 77.0 79.782.5 85.4 88.5 91.5 94.8 97.4100.0 103.5 107.2 110.9 114.8 118.8123.0 127.3 131.8 136.5 141.3 146.2151.4 156.7 159.8 162.2 165.5 167.9171.3 173.8 177.3 179.9 183.5 186.2189.9 192.8 196.6 199.5 203.5 206.5210.7 218.1 225.7 229.1 233.6 241.8250.3 254.1 – – – –