Icom IC-7850 Instruction Manual - Page 196
Tone scan, Voice squelch control function
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Previous view 12 SCANS ■■Tone scan By monitoring a signal on an HF/6 m repeater input frequency, the transceiver can determine the tone frequency required to access the repeater. qqSet the frequency or memory channel to be checked for a tone frequency. wwPush the [AM/FM] Mode key several times to select the FM mode. eeHold down [TONE]() for 1 second. • The Tone frequency screen is displayed. rrPush [p](F) or [q](F) to check the repeater tone frequency or tone squelch frequency. ttPush [T-SCAN](F). • The Tone scan starts. • "SCAN" blinks while scanning. yyWhen the tone frequency is detected, the tone scan pauses. • The tone frequency is set temporarily in the Tone memory. If desired, hold down [MW] for 1 second to overwrite the memory to permanently store the tone frequency. • The decoded tone frequency is used for the repeater tone frequency or tone squelch frequency. uuTo stop the scan, push [T-SCAN](F). • Hold down [DEF](F) for 1 second to select the default frequency. iiPush [EXIT/SET]. • Exits the Tone frequency screen. (≈) Multi-function keys (F) Function keys Mode keys [EXIT/SET] [MAIN DIAL] • While scanning Blinks ■■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 scan pauses while the receiver checks the received signals for voice components. (The squelch does not open during this check.) If a received signal includes voice components, and the tone of the voice components changes within 1 second, the scan is stopped and the squelch opens. If the received signal has no voice components, or the tone of the voice components does not change within 1 second, the scan resumes. ➥➥While in a phone mode (SSB, AM or FM), push [VSC]() to turn the VSC (Voice Squelch Control) function ON or OFF. • "VSC" is displayed when the function is ON. • The VSC function can be used in any scan. • The VSC function resumes the scan on unmodu- lated signals, regardless of whether the Scan Resume function is set to ON or OFF. 12-10 (≈) Multi-function keys Mode keys Appears