[TowerTalk] Baluns/tutorial/notes.

[Jim Brown]

On Fri, 21 May 2010 23:06:13 +0100, Steve Hunt wrote:

>I'm still puzzled why Jim (K9YC) was questioning the accuracy of the 
>Balun Designs impedance data. The chart shown here:
>http://www.balundesigns.com/catalog/1-1%205kw%20Choking%20Impedance.jpg
>doesn't seem to contain impedances that would cause significant errors 
>on the AIM.

That graph is quite similar to data I've seen for 14 bifilar turns on #61 
that proved to be erroneous in our round robin test. 

Remember, the AIM is a reflection-type analyzer, and 5K ohms is a long way 
from 50 ohms, so very small errors become quite large when differenced. 

73,

Jim K9YC