From: n6wg:First n6wg:Last (email@example.com)
For info on the K1, check the Elecraft site. I heard Wayne on the air with
the prototype after he came home from Dayton, and it sounded just like a K2.
On the K2 ATU, it works well on a wide range of antennas, but has an
ultimate limit on what impedances it can handle. I think I remember
something like 800-900 ohms, something in that area for the upper end. Low
end goes down around 10-12 ohms, at least in my shack.
I use baluns to help move the impedance seen by the ATU into something
around 50-100 ohms. I have homemade baluns for 1:1, 4:1, and 1:4. If the
ATU won't give me a 1:1 on a given antenna or band through the 1:1 balun, I
connect a step up or step down balun until the ATU sees an impedance it can
match more readily.
73, Bob N6WG
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