Sensibly equivalent¶ to:
The KT71 is an audio beam tetrode output valve that was designed for use in AC/DC equipment such as universal voltage radio receivers and television sets. It was issued in the early 1940's.
In single ended use an output of 5 Watts was possible with an anode load of 2,400 Ohms. If used in push pull class AB1 a pair of KT71's would generate 11.5 Watts at 4.5% distortion.
The Osram brand label on the reverse. Our Marconi branded KT71 has the Type designation etched into the glass in the standard M-OV style, this exhibit features nothing other than a plain white printed identification. Not M-OV made?
The classic envelope is 44 mm in diameter and, excluding the IO base pins, is 103 mm tall.
Absolute Maximum Operating Conditions¶
Updated January 06, 2022.