Hello JC, Thanks for your answer.
I just ordered a few 2631803802 and 5943003801 from mouser. With these ferrites I ask the same question, should I put the choke close to the 9:1 Balun or near the switching box and how many turns? some bevs have the feed point at +- 60m away from the switching box. 73's Filipe Lopes CT1ILT - CR6K F4VPX - TM3M 2015-10-12 15:40 GMT+02:00 JC <n...@comcast.net>: > 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
