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The DE06LF (DE.06LF) is a dull emitter AF triode from 1925.

The Radion name is feint and best seen at an angle. Face on it hardly notices.

The B4 base pins are of the simple split-pin type.

For use wit a 4 Volt accumulator a 30 Ω series resistor is required.

The third type of BBC trademark stamp was in use from 1924 to 1927.

Around the evacuation pip is a piece of green paper in the shape of a five pointed star.

The balloon envelope is 35 mm in diameter, and excluding the B4 base pins is 86 mm tall.

Reference: Data. Type DE06LF was first introduced in 1925. See also 1925 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶