Dave,
I've been looking at the pictures in the album you created ("Type W Plugin 8416-to-6DJ8 Conversion" here
/g/TekScopes/album?id=261883) and I'm wondering about the three pictures noted "Mounted on the back upper right corner with bracket vertical," "Mounted on the back with bracket horizontal," and "Transformer power off." What is the signal being shown here?
I assume that the change in orientation is affecting nearby tubes due to the transformer's magnetic field: would enclosing the transformer in mu-metal help?
It seems like finding a suitable transformer is challenging, or more challenging than buying 12AT7s, at least.
You are using coin cells (CR2032) to bias the grids of V114B/V214B: how long do they last?
-- Jeff Dutky
