Hi Mike, Oh, I would totally believe that the air-wound choke is ineffective at 160m. It just happens to be what I had available to use when I rigged up the elevated radials in the cold rain yesterday. I figured I'd put it in line just in case.
Thanks for the choke links, I will read the info on those sites. The air-wound choke is what I'm using when I'm feeding the antenna using the elevated radials. When I was testing using my buried radial field it is a different setup. There I have a DX Engineering radial plate that neatly ties everything (remote tuner, and DX Engineering Maxi-core Feedline Current Choke) together at the feed point. Thanks for the comments and info. 73, Todd - NR7RR On Fri, Dec 28, 2018 at 5:57 PM Mike Waters <mikew...@gmail.com> wrote: > Hi Todd, > > I'll bet the farm (if I had one) that your air-core choke is ineffective. > Take at look at > http://www.karinya.net/g3txq/chokes to see what I mean. > > A very, very good common mode choke is the one I have on mine, from > http://audiosystemsgroup.com/RFI-Ham.pdf. There is no better material > written on this subject, either in print or on the Internet. > > 73, Mike > www.w0btu.com > > On Fri, Dec 28, 2018 at 7:34 PM Todd Goins <tgo...@gmail.com> wrote: > >> ... I do have a common mode choke at (near) the feed point. It may or may >> not >> be effective at 160m. It does work on 10-80m. It is about 25' of RG-8 coax >> wrapped around a 4" PVC pipe as a form. Perhaps not ideal... No RF noted >> in >> the shack. >> >> 73, >> Todd - NR7RR >> > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector