FLEX-6000 Signature Series – Maestro User Guide
Page 42
Copyright 2019 FlexRadio Systems. All Rights Reserved.
9.4 HOW TO CHANGE THE DEMODULATION MODE
When a Slice Receiver is active, the Slice Receiver
Flag shows the mode and receive filter width in use.
To change the mode, tap the frequency display or
depress the slice receiver’s tuning knob for two
seconds or more. The Slice Receiver Menu will be
displayed. Tap on the desired mode in the mode sub-
menu. The Slice Receiver will change to that mode
and values in the Slice Flag will change accordingly. To close the pop-up menu, tap on the Slice
Receiver’s frequency display or anywhere outside of the pop-up menu or depress the slice receiver’s
tuning knob for two or more seconds.
The position of the Receive Filter relative to the Carrier Frequency will correspond to the conventions
of the current mode. A Receive Filter to the right of the Carrier indicates Upper Sideband mode. A
Receive Filter to the left indicates Lower Sideband mode. A Receive Filter that spans both the left and
right of the Carrier will indicate a double sideband mode.
9.5 HOW TO ADJUST THE SPEAKER AND HEADPHONE VOLUME OF A SLICE
RECEIVER
Speaker and headphone audio levels are controlled by the AF/AGCT/SQL multi-function controls on
the Maestro front panel. Speaker and headphone audio level is controlled with the inner knob. The
Automatic Gain Control Threshold is adjusted with the outer knob. When the Slice is operating in an
FM mode, the outer knob controls the audio squelch level. A short press of the inner knob mutes
the other Slice, placing the audio in Solo mode (and makes the Slice the Active Slice). A long press of
the inner knob mutes or unmutes the corresponding Slice. When a Slice is muted, a mute indicator
appears superimposed on the Slice Flag.
Controls for left to right audio balance and AGC decay rate can be found in the Slice Receiver Menu.
Tap the Slice Receiver’s frequency display to bring up this menu. See section 12.1,AGC Threshold for
detailed information about the use of the AGC.
9.6 HOW TO CHANGE THE RX FILTER OF A SLICE RECEIVER
Surrounding the Carrier Frequency bar in a Slice Receiver is a blue Receive Filter bar which represents
the filtered receive audio. The portion of the RF spectrum that is highlighted by the Receive Filter bar
will be output as audio.
The Receive Filter width can be adjusted manually with the RX filter multi-function control. The
control has two modes. In the High/Low mode, the inner knob controls the position of the lower
frequency edge of the RX filter and the outer knob controls the position of the higher frequency edge.
In the Center/Width mode, the inner knob controls the frequency of the center of the RX filter and
the outer knob controls the width of the filter. A pop-up display shows the frequency of the filter
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