The AB1938 appears to be a re-brand of the RCA 814 made for ADZAM. Length = 7.75" Diameter = 2.06" Max voltage = 1500 Max current = 150 ma Fil voltage = 10 Fil current = 3.25 amps GOTO INDEX
The AB1938 appears to be a re-brand of the RCA 814 made for ADZAM.