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HV Tester Prototype Checking Tubes

This is a little project I’m playing with. It is useful for testing voltage breakdown in components and cables. It can sort out gassy tubes or tubes prone to arcing.

Mr G ur mobile ST 8

Experimental scientific industrial export use only all testing done on a 50 ohm dummy load.

Collins R390A Video #4 – IF Gain Adjustment R519

This video was reposted. There’s a lot of comment about this adjustment on the internet and the general thinking is the procedure in the manual will result in too high a setting. If the setting is too high, there will…