[QuadList] Low Band Color recovery

[William R. Short]

I've been curious about this for a very long time, but recently seeing some 
frame grabs and some YouTube transfers (such as the DC Video transfer 
linked below) has really piqued my curiosity. My experience with quad was 
at WHEN TV, the CBS affiliate in Syracuse, NY. I worked there for a number 
of summers while a high school and an undergrad student, and duties 
included videotape operation and maintenance. The summer I arrived, there 
were four VR-1000 machines in the tape room, and the summer I left, there 
were three AVR-1 machines and an ACR-25. Program material recorded in low 
band color on the VR-1000 suffered from moire in areas of low luminance and 
high saturation, whether played back on a VR-1000 or an AVR-1. I knew it 
wasn't just us, because I occasionally saw archival material fed from 
CBS-NY with moire. I've always assumed moire was inevitable with LBC, and 
that it was "baked in" to the tape. Yet the frame grabs and YouTube LBC 
material I've recently seen look stunning, without any visible moire. So, 
is the moire inevitable with LBC or not?  If not, what was done to mitigate 
it during recording? If it is, is there some way to recover the analog 
video without the moire? Or was this material post-processed in the digital 
domain to remove the moire? Thanks.
https://www.youtube.com/watch?v=JX6oGHfyx_I

Best regards,
William Short