VE3KL Session  3
In this session, we will measure the noise figure of the Dongle receiver and debug the HF amplifier if necesary. To measure the noise figure you can use a Noise Figure Measurement File, noise_measure_VE3IIR.v7.grc     that was deleloped for this purpose and an excel spreadsheet for data collection and the required calculations.  The calculations can also be performed with a hand calculator if you wish. Instructions on how to use the programs will be given in this session. You might want to review the portion of my presentation on Noise theory in the section about Y factor measurement.   ENR is given and you measure the Y Factor (Y) F = ENR/(Y-1) Where ENR = Th/To-1 and is called the Excess Noise Ratio
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