F R O N T C O N S O L E
C H A P T E R 3
Hint:
For optimal use, set the
AGC
control such that the band noise level is
comfortable, yet weak signals still jump out of the noise. Then adjust
the
AF
control to comfortably hear the received signal. See also
Appendix C and the Knowledge Center article
How to Effectively
Use the PowerSDR 1.x AF[Gain] and AGC[Threshold] Controls
(search for
AF AGC
in our Knowledge Center at
http://kc.flex
- radio.com/search.aspx
)
(23) Drive (Transmitter Power Output/Tune Power)
This control adjusts the percentage of maximum power that will be available when transmitting. The
Drive
control may be adjusted while either receiving or transmitting.
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) AGC (Automatic Gain Control)
This control sets 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 90), where also a more expansive explanation of the AGC can be found.
(25) RX Gain
The RX Gain is in actual fact a 26dB preamp combined with a 20dB attenuator. This control enables
selection of the preamp/attnenuator states: ATTN, Off, and Pre. The corresponding preamp and
attenuator settings are shown in Table 6.
Table 6: RX Gain Details
Setting
ATT
(20dB)
Gain
(26dB)
Net Gain
(dB)
Attn
On
Off
-20
Off
Off
Off
6
Pre
Off
On
26
59
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