[Elecraft] [w2/K3] High SWR

[Don KA1KU]

I built a new W2 today and added the coupler in-line with my G5RV, which
recently replaced a 40M dipole.
Both my K2 and K3 have internal tuners, and I understand that the internal
tuners match inside the K's and cannot change the antenna so therefore can
not effect the SWR seen by the W2.
My MFJ 259 analyzer shows 1.1 to 1 at some point in most bands from 80 to 6
meters.
For example, on 40m the SWR reads 1.0-1 at 7.17MHz.  Similar points on other
bands.

Also, since the W2 is newly built, I checked the W2 out with a dummy load
attached.  On 40m, the internal tuner shows a match of 1.0-1, and the W2
reads SWR of 1.1.  With K3 power set at 1.0 and 5.0, the W2 reads 1.1 and
5.0.  On 20m, SWR (internal, W2) reads 1.0 , 1.1 and power at (1.0 and 5.0)
reads 1.2 and 4.  I think this rules out problems with the W2.  My K2
readings match the W2 almost exactly.  The K3 seems off a little but I have
not tried to calibrate it.

With G5RV connected, I get a much different picture.  On every band from 160
to 80 I get a SWR reading full scale, 5.  On 6m the reading is 3.  The
internal tuner matched each band to 1.0 or 1.1 hto 1.  Again, I understand
this means nothing in regard to W2 reading.  What I don't understand is why
I have such a high SWR, especially since the antenna analyzer indicates a
close match, 1.0-1 at 7.17MHz, which I used as my test frequency on 40m.  I
also get SWR of 5 when ATU is in bypass.  This is repeated on every band,
using the frequency of lowest SWR indicated by the antenna analyzer.

I also see odd power readings.  For example, on 40m, with K3 power set at
1.0 the W2 shows 4 Watts.  At 5, the W2 shows 14.  This too is similar
across all bands.

The G5RV has only been up a few months and seems to work great on receive. 
I've mostly been on 80, 40 and 20.
I thought I had a basic understanding of this but just don't understand what
I'm seeing. 


                       



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73,
Don KA1KU
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