F R O N T C O N S O L E C H A P T E R 7
(25) Preamp
This control sets the preamp level to one of four settings: Off, Low, Med (Medium), and High. It replaces
the Gain and ATT controls used previously. See the table below for details on each setting. The typical
setting for HF frequencies (and default for the software) is Med. Higher settings should be used for weak
signal work while lower settings are ideal for large signal activity.
Note: When using the 2m transverter, Low and High are the only options
available.
Table 7: Preamp Setting Details
With RFE W/O RFE
Setting
ATT
(10dB)
Gain
(26dB)
Net Gain
(dB) Setting
Gain
(dB)
Off On Off -10 Off N/A
Low Off Off 0 Low N/A
Med On On 16 Med 26
High Off On 26 High 40
(26) SQL (Squelch)
Figure 51: Squelch Controls
The SQL button enables the Squelch function. The threshold can be set with either the value to its right or
the slider below. The bar graph displays in green the signal level below the threshold and in red above (only
the red level is audible with SQL enabled). Squelch can be very useful to remove all noise from CW
signals, especially in narrow filter settings.
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64 ď›™FlexRadio Systems
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