I am told there were two sets of plug-
Above: 40MHz Sweep Generator, sync’d to the Sweep Timebase. A secondary RF output is fed to the Marker Generator.
Valves:2 x ECC81
Above: 40MHz Lin/Log Amplifier. The output is fed via an external cable to the display
Valves:3 x EF91
Timebase and X-
Astigmatism control valve line-
Marker Generator valve line-