Thanks for the note Jim, However I've already got multiple passes of the OCF Feedline fed through a stack of five 2.4" #31 donuts, per your very own, excellent RFI-Ham.pdf article. Picture on my QRZ page. https://www.qrz.com/db/KD4Z
The RG6 has a stack of three donuts with a large number (didn't count) of turns, located at the demark point to the house. I guess I could add another set and spread out the Z over frequency a bit more. I believe I need to look for other entry points to the entertainment system as a whole, as the DirecTV DVR is network connected and of course, connected to an AV receiver. Lots of points of entry to squelch. Warren, KD4Z On 5/18/2016 8:29 PM, Jim Brown <[email protected]> wrote: Your antenna, an off-center-fed Windom, is notorious for generating common mode current on the feedline, and there's no way to choke it effectively to kill that current. So what you're calling a feedline Mother Nature calls part of the antenna. THAT'S a primary cause of your problem. If you're having issues on 80M, you'll need at least 13 turns of the RG6 through a single #31 toroid to make a dent in the common mode current. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
