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That’s good if you remember the first time. I’m sure she did too! 😉
But putting it all back on track..yep that audio needs phase alignment no different from the carriers needing phase alignment as well.
Not all that easy considering how those signals are to get from point A to point B over a 1/4 mile distance.
Delay!!! Nothing but delay!!
Again referencing what was done in the analog video world, delay lines or modules were used to delay the pulses so that everything in the racks seen those pulses at the exact same time domain. Equipment close to those delay lines would be adjusted with more delay than those further away from the router or switcher.
Same must be done with the audio and reference pulse for a multiple transmitter system working in the analog world.