Below is a two part project for an RF Spectrum Analyzer from QST Magazine. Even if you don't build the project there's some great information in here regarding RF filters, mixers, oscillators and more.Spectrum Analyzer (Part One)A mong the many measurement tools sought by the amateur experimenter, the most desired but generally considered the least accessible???is the radio-frequency spectrum analyzer or SA. This need not be simple and easily duplicated, this homebuilt analyzer is capable of us....
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