Practical RF Filter Design

RF filter design is a piece of cake these days thanks to computer design and simulation tools. But actually realizing the simulated filter response in the real world can be a completely different matter! This video provides an introduction to practical RF filter design by building, testing, and tweaking a 137MHz bandpass filter suitable for NOAA APT satellite reception.

References and additional reading:

Description Reference
Designing a high-Q VHF bandpass filter A VHF Bandpass Filter for the QST Spectrum Analyzer, Wes Hayward, W7ZOI
Enameled wire capacitors Capacitance of a Wire Above a Foil, Wes Hayward, W7ZOI
Tutorial on double tuned bandpass filters The Double-Tuned Filter: An Experimenter’s Tutorial, Wes Hayward, W7ZOI
Air core inductor Q The Elusive Q of Single-Layer Air-Core Coils, George Murphey