On May 15, 1:21 am, Richard Clark wrote:
On 14 May 2007 19:43:14 -0700, dykesc wrote:

1:1 Liter Bottle Choke 4:1 MFJ Balun (tuner
bypassed)

3.94Mhz 57 -j169 14 -j39

7.185Mhz 62 -j212 19 -j48

14.29Mhz 70 -j313 12 -j63

Hi Dykes,

This is what I meant about measurements made in isolation not being as
informative without other information.

Oddly enough, it looks like the 4:1 is mounted backwards.

However, I reserve making a final judgement pending review of my OCF
models (your results are just too luckily hitting the ham bands).

73's
Richard Clark, KB7QHC

Richard,

I'm not following your statement that the 4:1 appears to be mounted
backwards. While the 1:1 values are not exactly 4 times the 4:1
values, they are at least "ballpark". Just to make sure you understand
my arrangement, when measured, the 1:1 values should "ideally"
represent the line input impedance without transformation. The 4:1
values (line on the high impedance side of the balun, analyzer on the
low impedance side) should be down by roughly a factor of 4, right?

Also I'm not sure what you mean by my results luckily hitting the ham
bands. I cut and fed the antenna to accomplish that. The OCF feedpoint
(at least by design) is just off the peak of a current loop on 80, 40
and 20 meters (even harmonics).

73s
Dykes AD5VS