Hi Filipe Zero , you should use material #31 or #77 , The core you have is not good for low bands.
JC N4IS -----Original Message----- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Filipe Lopes Sent: Monday, October 12, 2015 8:46 AM To: topBand <topband@contesting.com> Subject: Topband: Commond mode choke for Beverage Hi guys, I am about to add a common mode choke to isolate the antenna from its feedline to each of my beverages and I only have FT240-61 ferrites. My question is how many turns should I do on the ferrite using RG58 (all my bevs are fed with RG58). Also should I put the choke near the 9:1 balun or near my bev switching box? Thanks in advance. 73's Filipe Lopes CT1ILT - CR6K F4VPX - TM3M _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband
