"If the spotter was using a rig without an adjustable sidetone, wouldn't the 
frequency they spot be dependent upon the tone they prefer to hear?"

The spotted frequency should be the suppressed carrier frequency which is 
independent of the choice of tone frequency.  Remember there are very few true 
CW transmitters in use now and most use DSP MCW of a USB or LSB suppressed 
carrier signal.

Go back to the days when we tuned to max signal then offset the BFO for desired 
pitch.  The TX station frequency was the carrier frequency and completely 
independent of our BFO setting.

I knew there was a problem with getting consistent RTTY spots because some spot 
mark frequency and some spot suppressed carrier frequency.  I was not aware of 
any ambiguity with CW spots.

Andy, k3wyc
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