Yeah, that's the problem with ferrite baluns. They have relatively few turns because of the very high permeability of the core material. A crack destroys the permeability, so you no longer have a functioning balun.
Back in the dark ages we had air core baluns. They were HUGE - an HF balun might take up a couple of cubic feet of space - but they were impervious to such failures since air doesn't saturate or crack, Hi! 73, Ron AC7AC -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Saturday, October 15, 2011 5:30 PM To: Elecraft Subject: [Elecraft] Toroid Balun Cores I'm refurbishing an old antenna here and the toroid in the matching balun is cracked in several places. Will that affect the toroid performance? 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
