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| CV1247Sensibly equivalent¶ to:NT83 | 
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 |  | The CV1247 is a directly heated transmitting triode with a pure tungsten filament. Connections are by flying leads. Full power rating is to 3 MHz byt useful power can be obtained at up to 60 MHz. The old service code is NT83.Reference: Data-sheet. | 
 |   Absolute Maximum Operating Conditions¶
|  | Vh | Ah | Va | Vg | mAa | ra | gm | μ | | 
 | 14.0 | 6.0 | 2,000 | - | 300 | 2,750 | 2.4 | 6.6 | 
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 Updated April 01, 2015. |  |