Sensibly equivalent¶ to:
The EF184 is a purpose designed high gain VHF frame grid pentode. The EF184 was introduced in 1960 and superseded the EF80. The mutual conductance is 15.6 and the closely related (pin compatible) variable μ pentode EF183 has a μ of 12.5.
The valve could be used as an RF amplifier for 405 line television receivers or band two FM radios. We have no details as to its noise performance.
The thin glass tube envelope is 21 mm in diameter and, excluding B9A base pins, is 53 mm tall.
References: Data-sheet, 3002 & 1040. Type EF184 was first introduced in 1960.
Absolute Maximum Operating Conditions¶
PDF scanned from an original document held by the museum
Updated October 22, 2013. shape:thin.glass.tube construction:all.glass type:pentode age:1950.1960 base:b9a heater:6.3v pins:9 pin:1.k pin:2.g1 pin:3.k pin:4.h pin:5.h pin:6.s pin:7.a pin:8.g2 pin:9.g3