[Repeater-Builder] Modulation Papers

[scomind]

Hi Guys,   We put three white papers on the S-COM website (www.scomcontrollers.com) written by Virgil, W0INK, that follow up on some of the discussions about PM and FM on these lists.   If you're in the mood for some interesting technical reading, fill your coffee cup and take a look at:   "The Tuned Circuit LC Phase Modulator" (distortion in the phase modulator is not due to what you might think!)   "CTCSS Modulation And The LC Phase Modulator" (discusses distortion due to the mixing of voice and CTCSS)   "The Phase Modulator In NBFM Voice Communication Systems" (discusses voice response and why phase modulation is the standard)   PLEASE NOTE that Virgil mentions the superiority of phase modulation over frequency modulation in one argument. Before anyone blows a fuse, please understand that he is talking about the modulation system, not the modulator itself, and that "phase modulation" INCLUDES FM-plus-preemphasis.   If you want to comment directly to Virgil, his e-mail address is [EMAIL PROTECTED].   Keep an open mind, and happy reading!   73, Bob, WA9FBO   Bob Schmid, WA9FBO, Member S-COM, LLC PO Box 1546 LaPorte CO 80535-1546 970-416-6505 voice 970-419-3222 fax www.scomcontrollers.com Yahoo! Groups Links To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/   To unsubscribe from this group, send an email to: [EMAIL PROTECTED]   Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.