[Elecraft] KXAT2 vs. KXAT3 vs. T1

[Brian Hunt]

I believe the schematics, which are downloadable, will show the component values. I’ve never tabulated them though. 

Brian, K0DTJ 

> On Oct 25, 2022, at 10:16, Walter Underwood <wunder at wunderwood.org> wrote:
> 
> 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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