1946 HMV 1804.

[Geordie McBoyne]

I reckon the original Emiscope 3/4 CRT is good. The heater is supplied with only 3.5 volts and the anode 2.5KV from the portable solid state EHT generator. In fact the EHT generator produces nothing like 4KV I suggested it would do in post #62 and the highest potential is at present only 2.5KV. The solid state module is receiving only 7.5volts. I'm not sure what the maximum input voltage should be.
For the test procedure the grid and cathode are connected together and returned to the negative terminal of the EHT generator. +2.5KV is supplied to the anode.

Geordie McBoyne.