Total posts : 45366
You can’t have PowerSide and C-QUAM on the same carrier. Like I was explaining and answering this point in your other thread, and at my forum, PowerSide is a “lop sided” sideband method which pumps up the upper sideband, and lowers the lower sideband. C-QUAM needs a symmetrical level of BOTH sidebands so that the 90* shifted lobes of the L-R signals are at proper phase AND amplitude in relation to the main L+R envelope.
The result will be the L-R information tilted to one channel in the receiver, while the other one will contain either muffled distortion or an out of phase condition at a lower level.
If you study up on the C-QUAM format, and the PowerSide format, you will then see why the two won’t work together.
Leave out the C-QUAM, then your dream transmitter could be a reality. Or leave out the PowerSide, same thing, can become working transmitter. But with both, no way.
BTW..there is a reason why PowerSide has fallen out of favor. I would research that too. Basically it doesn’t work too well with the NRSC pyramid curve AND by itself, doesn’t work too well with standard AM detectors which looks at the whole envelope and needs the whole envelope..ie both equal lower and upper side bands.
Your transmitter concept would work if receiver manufacturers incorporated detectors that could follow and adjust to the transmitted format. An example of that is some of Sony’s receivers made in the 80’s that could decode all 4 of the AM stereo formats…ie Kahn-Hazeltine/Harris/Magnavox/Motorola.
Out of those 4, only two were compatible with mono receivers. The Harris V-CPM and Motorola’s C-QUAM.
RFB
