[TenTec] installing ladder line

[Dr. Gerald N. Johnson]

But Steve, the original post suggesting the balun specifically said 1:4 
impedance ratio to transform open line impedances to a better match in 
coax where the coax is also far more tolerant to bends and close 
proximity to other conducting objects, so the 1:1 may not be all that 
suitable.

I notice in the impedance curve of your 1:1 balun there is a series 
resonance about 22 MHz where the reactance gets low which is precisely 
the condition with a high impedance antenna where a tuner could tune to 
the balun, not the antenna.

73, Jerry, K0CQ

On 11/9/2010 4:14 AM, Steve Hunt wrote:
> Jerry,
>
> That shouldn't happen with a well-designed 1:1 Guanella Balun, which is
> the preferred choice for wide-band, wide-impedance-excusion,
> applications. Unlike a  4:1 Guanella balun or 4:1 Ruthroff balun, the
> core flux in a 1:1 Guanella balun is not determined directly by the load
> impedance / differential-mode voltage.
>
> Here's an example of what I mean by a well designed 1:1 Guanella balun:
> http://www.balundesigns.com/servlet/the-98/isolation-choke-balun-common/Detail
>
> 73,
> Steve G3TXQ
>
>