WiNRADiO G33DDC User’s Manual
17
Using the keyboard, type in the frequency of one your local AM stations: For
example, for 774 kHz, type in
7
7
4
, then
k
for kHz, then press
Enter
. The
typed-in frequency will appear on the digital frequency display.
When you start the receiver the first time, the AM mode is selected by default.
Otherwise you can set the demodulation mode by clicking on the appropriate
mode selection button at top-right:
When tuned, you should be able to see the station peak in both real-time
spectrum scopes in the upper section of the application window: The spectrum
scope on the left is the
DDC (Digital Down-Converter)
spectrum scope
, and
the one on the right is the
Demodulator spectrum scope
.
You can adjust the
receiver’s selectivity bandwidth for optimum reception
using the row of numbered buttons at the bottom of the
Tuning
tab, the
leftmost tab located just under the AM mode selection button. The numbers on
the buttons represent the bandwidth in kHz.
To adjust the bandwidth continuously, use the
DEM BW
control located at the
top of the demodulator spectrum scope:
At this point, you should be also able to hear the station. The volume is
adjustable under the
Audio
tab, located just next to the tuning tab. You can
use either the slider, or select the value next to the
Volume
edit box, next to
the
Mute
button.
An alternative and fast way to adjust the volume is by using the left/right arrow
keys of the computer keyboard.
M
anual tuning can be done in several ways. Let’s start with the tuning knob:
