O P E R A T I O N C H A P T E R 6
Table 11: Initial Control Values for Digital Mode Operation
Ctrl Value
Reference to
Figure 147
VFO A 14.09MHz (1)
RX Meter Signal (4)
TX Meter Fwd Pwr (4)
BAND 20 (5)
Mode DIGU (6)
Filter 2.7kHz (7)
VAC On (8)
Display Mode Panadapter (9)
AVG On (9)
PEAK Off (9)
MultiRX Off (10)
SPLT Off (12)
XIT Off (12)
RIT Off (12)
MUT Off (17)
AF 50 (21)
AGC-T 70 (22)
Drive 25 (23)
AGC Med (24)
RX Gain Pre (25)
SQL Off (26)
2. Ensure that on the PowerSDR Setup Form Cat Control is enabled (see page 106). Also check
that VAC (8) is enabled (if VAC is auto-enabled on the Setup Form (see page 74) it will
automatically be enabled when DIGL, DIGU or DRM (6) modes are selected).
3. Start up your digital mode program and ensure its CAT control and sound card selection are
configured to connect to PowerSDR. If so, your digital mode program’s frequency should
correspond to PowerSDR’s VFO frequency and it should be receiving Audio from PowerSDR. Use
the RX Gain (8) control to adjust the audio level going to your digital mode program (instead
of the AF (21) ).
4. Connect a 50 ohm dummy load to the antenna jack, or tune VFO A (1) to a quiet frequency on
the selected band. Use the TUN (19) button to verify power output on the TX Meter (4) (Set
to Fwd Pwr). If using the integrated ATU click the ATU (20) button to initiate a tuning cycle.
CAUTION: If you are not using the internal ATU then connect a 50 ohm dummy
load, or ensure that the antenna presents a 50 ohm load with a low
SWR. Failing to do so may damage the FLEX-3000 output transistors.
5. Click on the Transmit button of your digital mode program. It should switch PowerSDR to
transmit. Transmit a test signal (e.g. several CQ calls) in the mode you plan to operate and use
the TX Gain (8) control to adjust the volume of audio coming from your digital mode program.
147 2003-2009 FlexRadio Systems
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