I just bought a 7704A which works, but poorly. It only has a
bandwidth of 170MHz and the tube blooms badly at a low intensity. It
looks like it needs a new tube but does anyone know whether a weak
tube affects the bandwidth, or do I have other problems?
My other 7704A was tested at the same time and had a 240MHz bandwidth.
Is there a source for replacement tubes?
Can someone give me a few hints.
Just a small thing. I have a number of TM500 modules with broken
plastic edges which look ugly. I have started to fix them by cutting
a section from the hood of a DB25 connector with a matching color.
Glue it in place with cyanoacrylate plastic cement and the device
looks good again.