AOR AR-IQ-III, Руководство по эксплуатации

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8-5 Demodulation modes
The following modes can be used:
AM, SAM (SYNC AM), CW, RTTY, LSB, USB, FM, WFM, USER
8-6 Volume & mute
Volume control is on the bottom right of the software, though many users prefer to use the volume on their external
amplifiers. The button above the volume slider enables the audio output and mutes it when disabled.
8-7 Noise reduction
The NR control reduces background noise and is activated by the button above its slider control. The NR slider controls
the amount of noise reduction. The noise reduction can be activated in all modes except with the USER demodulator.
8-8 Noise blanker (NB)
The NB control reduces impulsive noise and is activated by the button above its slider control. The NB slider sets the
threshold of the noise blanker. Care should be exercised when strong signals are present in the band where the
receiver is tuned. A too low NB threshold (NB slider at or near its maximum position) may affect the quality of the tuned
signal and introduce intermodulation distortions.
Two noise blankers can be selected with the two buttons "NBW" (Wide) and "NBN" (Narrow).
The Narrow NB, operates on the bandwidth selected with the BW buttons (50 kHz, 25 kHz, 12 kHz, etc.).
The Wide NB is more effective when there are no strong signals in the bandwidth the DDC is tuned to.
The Narrow NB is more effective in all other cases.
8-9 S-meter
The signal strength meter (S-meter) is marked in both S points and dBm (S9=-73 dBm input). The S-meter response is
very linear thorough all its scale and accurate to within less than 1 dB across the range.
LOCK indication: When operating in Sync AM mode (SAM), a small "LOCK" display appears at the top right of the
meter, when the demodulator locks on to the AM carrier.