Also made with UX4 and B4 base. Was a replacement for the UV201A and UX201A. The designation is not PH201A but 201A, although it looks like it. The PH series of tubes was made in the early 1930's.
Dimensioni (LxAxP) incl.pins/tip
45 x 97 x 35 mm / 1.77 x 3.82 x 1.38 inch
Bibliografia
- - Manufacturers Literature 1924
-- Collector info (Sammler)
