Tag Archives: active filters

Amateur Extra Lesson 6.4, Filters and Impedance Matching, 11th Edition

Here’s your video introduction to Section 6.4, “Filters and Impedance Matching,” from the 11th Edition of the ARRL Extra Class License Manual for Ham Radio. Topics addressed include various filters, active filters, Butterworth filters, Chebychev filters, elliptical filters, crystal filters, … Continue reading

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Amateur Extra Class Lesson 6.3, Filters and Impedance Matching

Here’s your video introduction to Section 6.3, Filters and Impedance Matching, in the ARRL Extra Class License Manual for Ham Radio. After you’ve viewed the video, studied the section, and are comfortable with the associated test questions, you can return … Continue reading

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