Maggie roundie combo

[ChrisW6ATV]

Could the interlace issue just be a limitation of the circuit? Years ago, Consumer Reports magazine used to test for interlace quality among other things. One of their comments for some sets was "you can improve the interlace by careful adjustment of the vertical hold control". I remember having several TVs that worked that way, maybe all black-and-white sets. My brother bought a new Sony KV-1920D color TV in 1977, and I remember it was the first set I had seen where the interlace remained the same (almost perfect in that set) regardless of the vertical hold control's position within the in-sync range.