[Elecraft] ATU Manual settings - KPA1500

[Wayne Burdick]

Scott,

Every ATU design has different stray amounts of L and C. But the differences are small between the KPA1500 ATU and our other ATUs, especially the battlefield-proven KAT500, which has a virtually identical circuit. We test the ATUs into various loads to verify matching range.

That said, if you believe yours has a matching range problem, please contact support. There’s even the possibility it’s a firmware issue.

73,
Wayne
N6KR



> On Jun 16, 2018, at 1:26 PM, K9MA <k9ma at sdellington.us> wrote:
> 
> I've also noticed that the ATU often doesn't get a very good match, even if I try twice as per the manual.  The K3 ATU, by contrast, usually finds a much better match for the same load.  (Not talking high load SWR here, less than 2:1.)  I haven't compared the component values in the two ATU's, but I expect they're similar, so they should be able to achieve equally good matches.
> 
> Scott K9MA