• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

What is this tube?

Hi Guys. A friend of mine gave me this tube a while back and I have no idea what it is or if it's useful. All I know is that it was being dumped from a university in South Australia so my mate grabbed it and passed it on. Any ideas?
 

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