The vertical deflection 3dB point of the 7104 MCP CRT exceeds 3GHz. "Exceeds" is the best Tek was able to determine since measurements at these frequencies is not easy to do. The vertical distributed deflection plates have a 200 ohm impedance.
Lockheed took an off the shelf 7912 CRT and used it as the heart of a soft X-ray detector. They measured the vertical deflection 3dB point of the 7912 CRT as 3.5GHz.
The Horizontal bandwidth of the entire 7104 horizontal system from the BNC on a 7A29 is >350MHz which is the only scope I know of with that bandwidth on the horizontal axis.
I believe LeCroy made a faster CRT at one point. Steve Ditter may be able to confirm what LeCroy was able to do with their fastest analog scopes.
<snip> Interesting. How far up do you think this will go in terms of vertical deflection? 200MHz? 400 MHz? What's the fastest oscilloscope with this type of deflection plate arrangement?
