Icom IC-7800 Instruction Manual - Page 128
Voice squelch control function, Scan set mode
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SCANS 9 I 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 receiver checks received signals for voice components. If a receiver 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. ➥ While a phone mode (SSB, AM or FM) is selected, push [VSC] to switch the VSC (Voice Squelch Control) function ON and OFF. • "VSC" appears when the function is activated. [VSC] • 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. I Scan set mode [F-1•Y] [F-2•Z] [F-4•DEF] [EXIT/SET] Main dial 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 [F-5•SCAN] to select scan screen. w Push [F-7•SET] to select scan set mode. e Push [F-1•Y] or [F-2•Z] to select the desired item. r Rotate the main dial to select the desired condition. • Push [F-4•DEF] for 1 sec. to select the default setting. t Push [EXIT/SET] to return to scan menu. Select the desired scan speed from high and low. • HIGH : scan is faster • LOW : scan is slower Set the scan resume function ON and OFF. • 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