RF is not an issue, but X-ray emission is indeed a problem that had to be confronted by TV engineers back in the day. A rule of thumb is that a color TV needs about 1 kV of acceleration voltage per diagonal inch. 43 kV is no joke when it comes to X-ray generation, so I'm curious if they found a way to make it work at a lower voltage.
At one point in the video you can see that the TV has two second-anode leads, so maybe that was the trick, using two separate acceleration electrodes at half the voltage.
At one point in the video you can see that the TV has two second-anode leads, so maybe that was the trick, using two separate acceleration electrodes at half the voltage.