milkdragon
Junior Member

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RF idiot
Posts: 30
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You can use the Y-parameter measurement. Simply apply a noise source at the input, turn the noise source on and off to see the difference of the noise floor from the spectrum analyzer, record also the ENR of your noise source, then you can get the NF
LPF is not a must, but your receiver chain has to have high gain, or otherwise it would introduce error
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