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1. [Towertalk] Common-Mode choke at 430 MHz. (score: 1): Author: Larry Bush" <w5ncd@bigfoot.com (Larry Bush); Date: Wed, 17 Jul 2002 12:30:25 -0500; Am building a couple of 8 element 430 MHz Yagi on 1 inch PVC boom. The driven element is a dipole with direct feed RG-58A. I thought a common-mode balun wound with the RG-58 around the 1 inch OD PVC; /archives//html/Towertalk/2002-07/msg00457.html (7,506 bytes)
2. [Towertalk] Common-Mode choke at 430 MHz. (score: 1): Author: jreisert@jlc.net (Joe Reisert); Date: Thu, 18 Jul 2002 10:13:12 -0400; Larry, A balun is necessary and always a problem at VHF and UHF which often adds lots of complexity to a Yagi design. The most successful and widely used UHF baluns seem to be the half-wave type in c; /archives//html/Towertalk/2002-07/msg00482.html (9,911 bytes)
3. [Towertalk] Common-Mode choke at 430 MHz. (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Thu, 18 Jul 2002 18:58:19 -0400; I've seen this done before. If you test for common mode isolation by moving you hand along a cable, most baluns would look very good. Even very poor baluns. The only way to tell if a balun is workin; /archives//html/Towertalk/2002-07/msg00492.html (7,426 bytes)

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