Predicta vertical ghost line

[Phil Nelson]

For what it's worth, there was a long discussion of this issue on ARF. After a lot of checking & cogitation, I believe the punch line was that this is a characteristic of the design, at least somewhat, and you can reduce the line by adding a small capacitor, possibly at the risk of degrading the audio.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html