[Elecraft] KXAT2 vs. KXAT3 vs. T1

[Walter Underwood]

The KX3 has extra range so that it covers 160 m and 6 m compared to the KX2, which is 80 to 10 m. The T1 is spec’ed to cover 160 to 6 m, so I’m not sure about the details of that.

The KX3 might have a wider matching range on just the HF bands. I’ve only had it fail to match once.

A few years ago, there was a discussion on this list that gave all the component values for all the ATUs. I’m not having any luck finding those posts right now.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ <http://observer.wunderwood.org/> (my blog)

> On Oct 25, 2022, at 9:51 AM, Julia Tuttle <julia at juliatuttle.net <mailto:julia at juliatuttle.net>> wrote:
> 
> Hi folks,
> 
> I was looking at Elecraft's antenna tuners, and I'm a little confused at
> their specs.
> 
> The T1 and KXAT2 are listed as having 7L7C networks, while the KX3 is
> listed as having an 8L8C network, but all three are listed as being able to
> match up to a 10:1 SWR.
> 
> Why doesn't the KXAT3 have a wider matching range from the extra inductor
> and capacitor?
> 
> Is the 10:1 spec conservative and in reality all three can exceed it but
> the KXAT3 will outperform the other two? Do the eighth inductor and
> capacitor on the KXAT3 provide *closer* matches instead of a *wider*
> matching range?
> 
> Thanks and 73,
> 
> Julie
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