[CQ-Contest] what is required of recevied audio, and whay will it show?

[Jim Brown]

On Fri,3/10/2017 1:41 AM, David Pruett wrote:
> Just about any modern transceiver that has a sub-receiver utilizes 
> stereo receive audio.

Not quite. They feed two channels of audio to headphones, but those 
channels are not "stereo." Stereo is, by definition, the use two or more 
microphones in an acoustic environment to receive magnitude, phase, and 
time information about sound in that space, and feeding that signal to 
two or more loudspeakers or headphones to reproduce the sound in the 
original environment, including the spatial location of the sound 
sources. In stereo, the PHASE relationships between the two channels is 
critical, and far more than the amplitude relationships.

The only way in which we use anything like this in ham radio is 
diversity reception, where two receivers are fed by two antennas and we 
put one in one ear and one in the other. The amplitude and phase 
relationships between the two antennas provide a sound field that can 
create a spatial impression and sound a lot like stereo.

When doing SO2R, many of us put the radio on our left to our left ear 
and the radio on our right to our right ear, but since those radios are 
listening to two different frequencies, it's NOT stereo.

73, Jim K9YC