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ID = 80033
Tube type:  Double Pentode 
Identical to 6HA7
Similar Tubes
Differences not known by us:

Base Noval, 9 pin miniature (USA pico-9) B9A
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / Indirect

A twin pentode with sharp cut-off characteristics, developed for use in TV receivers, where one section is for AGC and the other for sync separation.

The cathode, control grid and screen grid are common to both the sections. The control grid serves as the noise gate for both the circuits.

However, there are two suppressor grids and two plates to separate sync output from one pentode and AGC voltage from the other.



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