FLEX-6000 Signature Series - SmartSDR for Windows Software User’s Guide
Page 165
Copyright 2018 FlexRadio Systems. All Rights Reserved.
The RX ANT drop down menu allows you to select the antenna that you would like to use
for receiving within this Panadapter. This will dictate which antenna is supplying the RF for the
frequency display as well as the receive audio for the Slice Receivers within the Panadapter.
The Loop buttons will toggle on (Blue) and off (Grey) the LoopA or LoopB ports.
The FLEX-6500 only has one loop option. The FLEX-6600/M, FLEX-6400/M and FLEX-6300 do not
support the loop option.
RF Gain adjusts the preamps of the FLEX-6000. The FLEX-6700 has two stages of
hardware preamps which allow a total of six Preamp settings in 10dB steps (-10, 0, +10, +20, +30,
+40). The FLEX-6500 has one hardware preamp and 3 preamp settings while the FLEX-6300 has one
hardware preamp and 2 preamp settings. In most scenarios, the preamp should be left in the default
setting for optimal operation. In a few rare situations (e.g. extremely low RF noise floor, use of a low
gain receive antenna), you may get an improvement in signal to noise ratio by turning the preamp
up. Even rarer, if you have extremely strong signals, you may decrease the preamp setting to keep
from overloading the radio’s RF front end.
The Display menu button on the Panadapter menu exposes the display controls. A horizontal line
separates Panadapter controls (top) from Waterfall controls (bottom).
The FPS slider controls the Frames Per Second that the Frequency Line is drawn at. Lowering the FPS
control has several effects:
• It lowers the rate at which both the Panadapter and the Waterfall are updated
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