Virgil's White Papers
Virgil, W0INK, is one of the designers of S-COM controllers specializing in analog circuitry. Here are his latest papers.
- The Tuned Circuit LC Phase Modulator (8 March 2005, lcphasemod.pdf, Acrobat, 465KB)
- CTCSS Modulation And The LC Phase Modulator (8 March 2005, ctcssandpm.pdf, Acrobat, 129KB)
- The Phase Modulator In NBFM Voice Communication Systems (8 March 2005, pmmodandnbfm.pdf, Acrobat, 90KB)
- CTCSS Reject High Pass Filters In FM Radio Communications, an Evaluation (8 June 2008, ctcsssreject&hpfilters.pdf, Acrobat, 284KB)