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Low Noise Amplifier

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The WBT uses a chain of broadband Low Noise Amplifiers (LNAs) to minimize noise figure and provide high sensitivity. The LNAs can be internally attenuated via the Rx Attenuation setting, to reduce the sensitivity of the receivers for more powerful signals. The Special Use RF paths have an additional broadband LNA to provide the lowest noise figure, and to receive signals below -120 dBm.

 

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The Special Use input has an additional LNA relative to the "standard" Rx/Tx input.  

The Special Use input also has a switchable 3Vdc bias supply to power an active antenna or in-line LNA such as may be used at the far end of a cable run.

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