[TowerTalk] Balun for an elevated vertical

[Jim Brown]

On 10/19/2012 9:40 AM, Cqtestk4xs at aol.com wrote:
>   Any type of balun necessary with this?

YES!  Lots of work by Rudy Severns, N6LF says so. His extensive work on 
radial systems is well worth the time to dig through it.  You can see 
photos of what I did on two 160M verticals with elevated radials in the 
160M "small lot" tutorial that's on my website. The white coax shown is 
the plenum version of Commscope 3227 (2427, I think) that has the 
advantage of smaller o.d. by virtue of the plenum outer jacket, thus 
allows more turns through the same diameter core. See the Cookbook 
chapter of my RFI tutorial for choke recommendations.

Your proposed antenna sounds like a winner, but you really need to study 
Rudy's latest piece, published in QEX this summer, and downloadable from 
his website.  Google to find it.

My stuff is at http://audiosystemsgroup.com/publish.htm

73, Jim K9YC