[K2][KAT2] Is it working as well as can be expected?

Posted by Chip Stratton on Aug 21, 2011; 3:38pm
URL: http://elecraft.85.s1.nabble.com/K2-KAT2-Is-it-working-as-well-as-can-be-expected-tp6708777.html

I recently bought a K2 (s/n 3873) with KAT2 module (f/w 1.06) on Ebay. The
K2 is working well, but I'm not sure the KAT2 is. Here is what I get tuning
into a 25 ft vertical wire with 16 ft counterpoise on the ground:

 f SWR L C Net  3.540 1.2 18.2 0.66 N1  7.050 1.6 3.9 0.24 N1  10.106 1.1
1.6 0.05 N2  14.100 2.6 2.6 0.04 N1  18.089 1 1.9 0.15 N1  21.100 9.4 1.3
0.09 N1  24.900 1.1 1.2 0.1 N1  28.100 1.2 0.5 0 N1
My AA-230 analyzed this antenna this way:

 f SWR R X LC Z  3.54 19 465 -478 93pf 668  7.05 15 105 -252 89pf 273
10.106 4.2 166 85 1333nh 186  14.1 15 750 78 876nh 760
I can see that the antenna is pretty close to 1/2 wave for 15m so would be
hard to tune to. And I can also see that the impedance of 760 ohms is very
high for 20 meters, so maybe I can't expect an SWR of 2:1 when we're
starting off at 15:1, but my KX1 gets 1.2:1 using the same inductance but
.02 nF.

Perhaps the 22 pf capacitor or relay is bad on the KAT2, but would welcome
any comments. I do hear relay action as I move to each inductor, capacitor,
n1, and n2.

Thanks,
Chip
AE5KA
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