Hi cur on 6 meter

[Max iw0gxy]

Today I've noted the HI CUR warning on my K3.
The vswr is very low (around 1.2) and the supply is 50A, so is not a supply overload question neither vswr problem (i checked also on dummy).
It happens when on 6m (and only on this band) the power is more than 84W. I updated the firmware when it has been released but actually i didn't noted if it happened with previous firmware releases.
Max IW0GXY

[Max iw0gxy]

I checked and the ammeter read 24A on 6mt@100W and 18A on other bands. So it's an unusual current drain.
Any hints?

[Enno, PF5X]

Hi Max,

It seems that the KPA3 is not as efficient on 6m as on the other bands. My K3 draws 21.5A at 6m/100W.
A friend of mine who owns a K3 complained about this phenomenon as well (25% more current on 6 than on other bands).

Maybe the design team can explain this behavior ...

-- Enno, PF5X

Max iw0gxy wrote

Today I've noted the HI CUR warning on my K3.
The vswr is very low (around 1.2) and the supply is 50A, so is not a supply overload question neither vswr problem (i checked also on dummy).
It happens when on 6m (and only on this band) the power is more than 84W. I updated the firmware when it has been released but actually i didn't noted if it happened with previous firmware releases.
Max IW0GXY