The 5GS7 triode pentode was designed as a frequency changer or mixer in VHF television receivers. Both triode and pentode are also specified as Class A amplifiers.
Three valves make up the family: 5GS7 with a 5.4 V heater at 0.45 A, the 6GS7 - 6.3 V @ 0.375 A & 7GS7 - 7.6 V @ 0.3 A.
The arrangement is typical with the triode and pentode mounted at right angles to one another. The vertical bright sheet below the lower mica screens the pentode anode and g2 connections to the base pins.
The thin glass tube envelope is 20 mm in diameter, and excluding the B9A base pins is 47 mm tall.
Reference: Data-sheet. Type 5GS7 was first introduced in 1967.
Absolute Maximum Operating Conditions¶
Updated January 02, 2015. shape:thin.glass.tube construction:all.glass type:triode.pentode age:1960.1975 base:b9a pins:9 pin:1.g1(t) pin:2.a(t) pin:3.k.g3 pin:4.h pin:5.h pin:6.a pin:7.g2 pin:8.k.g3 pin:9.g1