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| CV1881Sensibly equivalent¶ to:BS384 VX4144 | 
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 |  | The CV1881 is an argon filled noise tube suitable for measurements from 3 to 12 GHz. The prototype was the VX4144.Reference: Data-sheet. | 
 |   Absolute Maximum Operating Conditions¶
|  | Vh | Ah | | 
 | 6.3 | 0.4 | 
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 Updated November 20, 2017. |  |