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6K8GTSensibly equivalent¶ to:CV1946See also:
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The 6K8GT was purpose designed for radio as a mixer or frequency changer with the signal input to the top-cap. Here we have an unbranded version. However the style of construction matches closely the Tungsram 6K8GT.The valve has a common cathode and the triode and hexode control grids are internally connected. The triode is build on one side of the cathode and the hexode is constructed on the other side. The triode local oscillator would produce 7.5 Volts peak to peak.The input signal would be coupled to the frequency changer via the top cap connection to grid 3.The cylindrical screen is topped with a screening plate.The wide glass tube envelope is 29 mm in diameter and, excluding the IO base pins, is 74 mm tall.References: Data-sheet & 1040. Type 6K8GT was first introduced in 1938. See also 1938 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | tc | m | h | a | g2,g4 | g1(t),g1 | a(t) | h | k | g3 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | ra | gm |
| 6.3 | 0.3 | 250 | 100 | -3 | 2.5 | 6 | 0.6M | 0.36 |
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Absolute Maximum Operating Conditions¶
| Va | mAa |
| 100 | 3.8 |
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Updated January 18, 2017.
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