To add to Bojan's comments a bit.
Using a radio like the U3S, which creates the "data" through direct frequency control, you set the frequency to the actual Tx frequency.
? In Bojan's example 14.097130 MHz
NOTE: some software picks the center tone, others pick an edge tone, but they are only a few Hz apart.
When using a radio in SSB tone and a computer application like WSJT-X that injects a "Tone" into a mixer with a suppressed carrier, the tone is between 1400 and 1600 Hz.
? So the radio displays 14.095600 MHz (in SSB - usually USB). WSJT-X shows a bar in the waterfall between 1400 and 1600 Hz (the WSPR window).
WSJT-X injects a audio Tone of 1530 Hz - seen on .
The actual signal is 14,095,600 Hz + 1530 = 14,097,130 MHz. => 14.097130 MHz.
To verify this, put the receiver in CW mode and set the waterfall to look for the signal.
The using the typical 800 Hz offset (or tone), your radio would be set to 14,096,330 or 14,097,930 depending on CW or CW-R setting to be on frequency.
I hope this helps!
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Rob KB8RCO
