[Elecraft] RFI and Direct tv or Dish network

[David Cutter]

Some OCF dipoles work very well when used with a 2-choke balun, see DJ0IP for suitable designs.  Spiderbeam make proper 2-choke baluns for their OCF dipoles but I don't know of any others.   It's all about suppressing those common mode currents on the outside of the coax.  He and I have both measured common mode currents with different chokes; see his site for details.  http://www.dj0ip.de/balun-stuff/

David
G3UNA


----- Original Message ----- 
From: "Warren Merkel" <hullspeed21 at gmail.com>
To: <elecraft at mailman.qth.net>
Sent: Wednesday, May 18, 2016 1:23 PM
Subject: Re: [Elecraft] RFI and Direct tv or Dish network


>I have a DirecTV system and haven't had as good luck with RFI as the
> others here.   My dish is about 40 feet directly below and near the end
> of an OCF 80m Windom.   It worked out that was the only realistic
> position that afforded full Sat views through the trees. 
> 
> Usually nothing happens at 100w HF output, but when I run the power up
> to 500w (depending on band), two of my DVRs either "turn off" (standby
> really) or start randomly recording whatever channel is being tuned at
> the time.  I've got the dish grounded and the RG6 feed is passed
> multiple passes through large #31 ferrites, with no overall improvement
> in RFI.
> 
> I would recommend much more separation of antennas and feedline than I
> have, if possible.
> 
> Warren, KD4Z
> 
> On 5/17/2016 10:08 PM, w9hak <w9hak at twc.com> wrote:
> I am contemplating dropping TWC and going to a satellite system. Any
> 
> advise on rfi would be appreciated.
> 
> Smith Bradford
> W9HAK
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to d.cutter at ntlworld.com