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Group 3. Audio related levels
Group 4. Reception quality related levels
Ultrasonic Noise
bar graph - Indicates the
MPX signal amplitude
in the approximate bandwidth
of 80 kHz – 150 kHz.
Stereo Blend
bar graph - In stereo signals, the difference (L-R) component of the MPX signal
is more susceptible to disturbances than the sum (L+R) signal. Therefore, the separation of the left
and right audio channels can be decreased in order the audibility of the disturbance to be reduced.
This channel separation reduction is called “stereo blending”. A value of 100% indicates that no
reduction is applied. The level of stereo blending depends on the following input signals: RF
Signal Level, Multipath, Ultrasonic Noise and Pilot tone deviation.
