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into an RF choke -- which is recommended by Force 12 in their antenna manuals.....works great! /k6sdw -----Original Message----- From: Greg Gobleman [mailto:k9zm@frontiernet.net] Sent: Friday, January 12, 2001 4:11 AM To: Force12Talk@qth.com Subject: Re: [Force 12 Talk] C-31XR Balun ... > I am very interested in others' thoughts on Ted's question and my views in > particular. > > Regards, > John Petrich, W7HQJ Hi John, Do you have any experience with the W1JR type Balun which is recommended in W2FMI's book, Balun's and Unun's? You are aware that not all "current" mode type Balun's are suitable for use? The Force 12 version seems to use a proper ferrite mix. Some other manufacturers do not and visible heating of the Balun can occur with 100w power levels. Even with antennas that appeared to be properly constructed I have observed the destruction of a popular "current" mode Balun with kilowatt power levels. Heating had gone un-noticed, but had almost certainly occurred. Please also, keep in mind that I am not a scientist by any means, just a builder, user and observer. 73 Greg K9ZM -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force 12 Web site: http://www.qth.com/force12 Submissions: send to Force12Talk@qth.com To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk For problems with the list, contact n4zr@qth.com -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force 12 Web site: http://www.qth.com/force12 Submissions: send to Force12Talk@qth.com To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk For problems with the list, contact n4zr@qth.com |