Got a Dumont RA-103 Dog(mouse)House and a GE monitor.

[Electronic M]

Originally Posted by Kevin Kuehn

Plenty of sets used a 12AU7 video output, including the Raytheon/Belmont.

I don't know if they used it for video output (that would seem like a normal application to me), but they did use the 12AU7 for vertical output in my GE (and that strikes me as odd).

[Kevin Kuehn]

Originally Posted by Electronic M

I don't know if they used it for video output (that would seem like a normal application to me), but they did use the 12AU7 for vertical output in my GE (and that strikes me as odd).

I misspoke and said video output(which is what my Raytheon has). But in fact RCA's RC- 19 Receiving Tube Manual list's it's max ratings (each unit) as a vertical deflection amplifier.

[Kevin Kuehn]

What's causing the jaggedness in your posted pictures, is that your video player doing that?

[Electronic M]

Originally Posted by Kevin Kuehn

What's causing the jaggedness in your posted pictures, is that your video player doing that?

It seems to be the set. IIRC it does not do it when adjusted to produce drive bars...