Notes and Reflections on Books and Media
by Hannah Leitheiser
The Fast Track to Your Extra Class Ham Radio Licence
Michael Burnette, AF7KB
An attempt to use sound devices to inject a signal and measure the output of simple RC low and high-pass filters (wrote software for analysis). Apparently impedance is a difficult topic for many would-be HAMs. Once upon a time I learned this, but it's been awhile. I was going to do a video but my measurements are pretty far off. I don't know how to account for it.