Iain,
One of the first things to check is the connections to your power
supply. Be certain they are all tight.
Why? The K3 attempts to control and maintain the power output using a
closed loop system.
If the power supply voltage drops at the K3 terminals, the current must
increase to maintain the same power level. Normally, that is good, but
if the power cable or its connections are not capable of maintaining a
good voltage level to the K3, the results will be as you indicated.
This is not the only possible cause of increased current draw, but it is
the first thing to check.
73,
Don W3FPR
On 4/15/2014 11:00 AM, Iain G4SGX wrote:
> Apologies if this is covered before.
>
> I've just noticed some new behaviour on my K3.
>
> While on 10 RTTY chasing DX, I noticed the current indication on the
> PSU rising during a long TX.
>
> I switched to the current meter on the K3.
>
> At the start is was about 15Amps (100W RTTY TX) but soon rose.
>
> On a 20 second TX it rose to about 26 Amps (!) and the Hi Curr error
> message came up on screen.
>
> The rig USED to be OK for extended periods of RTTY.
>
> I have not tried on any other bands.
>
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