On Fri, 19 Sep 2008 20:45:57 -0700, Ron D'Eau Claire wrote: >"Balun" is an unfortunate, all-inclusive and misleading term. One so-called >"balun" may be as different from another "balun" in its requirements and >application as a motorcycle is different from railroad locomotive.
Yes, it really is. >I stand by my statement when talking about a "choke balun" consisting of a >string of ferrite beads on some coax or a coaxial line on a coil form such >as I described. The only losses caused by such a balun will be those of the >transmission line itself, which cannot be ignored if the SWR is high. Yes on all counts. BUT -- the chokes wound as a coil are vastly superior. >So-called "baluns" that transform impedances are, typically, transformers -- >often transmission-line transformers. They're a whole different animal and >can be very unpredictable, especially when they use ferrite or powdered iron >cores and are exposed to a wide range of impedances. Yes. Again, poor use of words by the industry. 73, Jim K9YC _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
