F R O N T C O N S O L E
C H A P T E R 3
Note:
The control doubles in function as the power level setting for the
TUN
(Tune) button described above. The Tune power may be adjusted
while the
TUN
button is activated or by using the control on the
Setup Form-Transmit Tab.
While great care is taken to ensure that this value is accurate and that selecting a
Drive
value will give
approximately that amount when using the 100W PA, there are variances in the filter components and
transmitter characteristics that make it difficult for this to be exactly right over the whole range
(1-100).
(24 and 24b) AGC (Automatic Gain Control)
These controls set, for each receiver RX1 and RX2 respectively, the Automatic Gain to one of the
following settings: Fixd (Fixed or off), Long, Slow, Med (Medium), Fast, or Custom. The Custom setting
uses the controls on the Setup Form-DSP Tab, AGC/ALC Sub-Tab (page 109), where also a more
expansive explanation of the AGC can be found.
(25 and 25b) Preamp
This control switches the 15dB preamp on or off. For the HF frequencies best results are achieved with
the preamp on for the upper bands and off for the lower.
Note:
The preamp is unavailable for the 160m band to avoid interference
from the broadcast bands. However, you can either insert a dedicated
preamp using the RX1 Out/In receive loop (see page 7), or connect
one at a receive only antenna and configure the appropriate antenna
selection with the Antenna Form (see page 149).
(26 and 26b) SQL (Squelch)
Figure 59: 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 (squelch
closed) and in red above (squelch open: 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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2003-2008 FlexRadio Systems
