|
Actually my career was 2-way radio and that demanded a high bandwidth scope, even with the 20 MHz limit I can still see the ripple but as it stands now I have a good handle on the issue with a shield around the 12AT7. As it turns out the reason the color was washed out was because the 1st video amp in the set was being pushed to saturation so I'm going to add a gain control pot to its grid. The amp can pass 5+ MHz to the 1st video and everything I own is previous generation broadcast be it DigiBeta, DVCPRO and Type-C so bandwidth here isn't an issue, the picture tube begins to blur at the 350 horiz line point of the resolution chart so this is about the limit of the delta gun CRT but by no means the limit of the set itself when unleashed from the 4.5 MHz trap.
|