The type 41E is a high gain audio output pentode. The original Type 41 is electrically identical to the type 6K6GT but we can not find specifications for the E variant.
The 41 was designed for single ended or push-pull use in the output stages of domestic equipment.
The Philco aiming for brand loyalty.
The two part stitched anode. The copper supports of the control grid have a U shaped fin attached to reduce the temperature of the control grid wires and thereby reduce or eliminate secondary emission.
The classic envelope is 38 mm in diameter, and excluding the UX6 base pins is 92 mm tall.
References: Data-sheet, 1040 & 1043. Type 41E was first introduced in 1936. See also1936 adverts.
