The 36 is a tetrode voltage amplifier for use at RF frequencies for AM broadcast radio receivers. It can also be used as a detector. This valve, the 36E looks to be a variant of the 36 but no specific details have as yet been found.
The perforated outer screen and top cap connection.
The heater passes through the cathode tube four times. The lower screen can be seen as can the screen grid winding.
The UX5 base pins.
Thanks to Mark Mallison for sending the images.
The classic envelope is 38 mm in diameter, and excluding the UX5 base pins is 99 mm tall.
References: Data-sheet & 1043. Type 36E was first introduced in 1936. See also1936 adverts.
