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And, as already said, the alignment shape changes with AGC (and hence signal) level.
It behooves us now, who use modulators and coax, to align so that its spot on
at the signal level we expect to actually have.
I disagree that its always hard. Its hard for sets that don't have shielded coils and
really good bypassing, like the Pilot 3" sets and the Hallicrafters 7" electrostatics, both of which seem to oscillate if I follow instructions.
Also as I've said before: I've seen exactly two tube TVs that got to me with even
mildly passable alignment: A TT5 and a TRK12.
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