Presumably for the same reasons that tubes of the same type from different manufacturers often look somewhat different inside. Manufacturers tries to reuse as many parts as they could between different tubes, to limit the amount of tooling needed to roll out a new type. The same plate structure might be used in several different sweep tubes, and if the getter mounting tap is already available for welding to the side rather than the top, that's where it ends up.
Quote:
Originally Posted by Charlie
Curious- with many tubes of the same type, getters can be in different locations. For instance, some 6JE6's have them at the top of the tube, and others are on the sides.
I would think different tube numbers are engineered to place them in the best possible position, but why put them in different places in two tubes of the same type?
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