User Manual

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There are also two Zoom in/out buttons performing their self-explanatory
functions, and a Clear button, which clears the graph and the min/max
values.
Clicking anywhere on the spectrum graph tunes the receiver to the
corresponding frequency. You can also drag the mouse horizontally across
the spectrum and continuously tune the receiver.
To hide the Spectrum Scope, use the yellow triangle button next to the
power switch again.
Did you know?
During the cold war, the Soviet Union and other Communist countries used
to jam shortwave transmissions such as the BBC, Voice of America, Radio
Free Europe and Deutsche Welle to their own citizens. The Soviet Union
alone was spending about $1 billion per year on jamming, and had 200
jamming stations that were continuously pumping out 600 Megawatts of
power.