Post by Lon on 08/28/26 at 14:13:02
Found this on facebook, there are probably other factual (?) pieces that can be shared among us.
The GETTER SHAPES and Manufacturers listed below reflect general production tendencies, not strict rules. Tube factories frequently changed internal designs over the years, so the same manufacturer may use different getter types across different periods.
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Top Hat / Cup Getter
One of the earliest getter designs, common in 1940s to early-1950s tubes. Often used in early American production from RCA, GE, and -Tung-Sol. This style getters reflect early post-war tubes.
D Getter
Very common in 1950s to early-1960s production.
Frequently found in tubes made by Mullard (Blackburn), Philips / Amperex, and RCA. The D-shaped getter is a classic vintage tube construction.
Square Getter
Less common, seen mainly in 1950s–1960s European tubes.
Often associated with Valvo (Hamburg) and Telefunken, as well as the American Raytheon.
Round Getter (angled ring)
Widely used during the late-1950s through the 1960s. Common in tubes from RCA, Sylvania, and Mullard. The ring is usually angled and supported by a single rod.
Halo Getter (horizontal ring)
More typical of mid-1960s onward production. Often seen in tubes from Philips / Amperex, Matsushita, and Toshiba. The ring sits horizontally like a halo above the structure.