Icom IC-7700 Instruction Manual - Page 137
Voice squelch control function, Scan set mode
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SCANS 9 ■ Voice squelch control function This function is useful when you don't want unmodulated signals pausing or cancelling a scan. When the voice squelch control function is activated, the transceiver checks received signals for voice components. If a received signal includes voice components, and the tone of the voice components changes within 1 sec., scan pauses (or stops). If the received signal includes no voice components or the tone of the voice components does not change within 1 sec., scan resumes. VSC ➥ While a phone mode (SSB, AM or FM) is selected, push [VSC] (MF7) to switch the VSC (Voice Squelch Control) function ON and OFF. • "VSC" appears when the function is activated. • The VSC function activates for any scan. • The VSC function resumes the scan on unmodu- lated signals, regardless of whether the scan resume condition is set to ON or OFF. ■ Scan set mode ∫ √ DEF EXIT/SET Main dial F-1 F-2 F-4 When the squelch is open, scan continues until it is stopped manually- it does not pause on detected signals. When squelch is closed, scan stops when detecting a signal, then resumes according to the scan resume condition. Scan speed and the scan resume condition can be set using the scan set mode. q Push [SCAN] F-5 to select scan screen. w Push [SET] F-7 to select scan set mode. e Push [Y] F-1 or [Z] F-2 to select the desired item. r Rotate the main dial to select the desired condition. • Push and hold [DEF] F-4 for 1 sec. to select the default setting. t Push EXIT/SET to return to scan menu. Scan Speed Select the desired scan speed from high and low. Scan Resume Set the scan resume function ON and OFF. HIGH • HIGH : scan is faster • LOW : scan is slower ON • ON : When detecting a signal, scan pauses for 10 sec., then resumes. When a signal disappears, scan resumes 2 sec. later. • OFF : When detecting a signal, cancels scanning. 9-3