[Elecraft] K-3 with High Current Problem on 20 meters

[Olli Tuppurainen]

I had the same problem on 10m. 

My power supply ( 30A max ) had a voltage drop from 13.8V to 12.5V on 100W
output. I was instructed by Elecraft to " increase the power supply voltage
to 14.0 to 14.5VDC under no load, and make sure the is as direct of
connection as possible between the power supply " Then my power supply
voltage was dropping from 14.5V to 13.8V ( looking from K3 DC voltage meter
)

This cured my problem at least in home use.


B.R

Olli 
OH6CT

> -----Alkuperäinen viesti-----
> Lähettäjä: elecraft-bounces at mailman.qth.net [mailto:elecraft-
> bounces at mailman.qth.net] Puolesta Robert Redmon
> Lähetetty: 2. kesäkuuta 2011 14:45
> Vastaanottaja: RLVZ at aol.com
> Kopio: elecraft at mailman.qth.net
> Aihe: Re: [Elecraft] K-3 with High Current Problem on 20 meters
> 
> Dick,
> 
> I have a similar problem on 20 meters, and (in my case) it seems to be
> antenna related (although the swr is below 1.5:1). When I check it on a
> dummy load, the current on 20 is normal.
> 
> Bob K5SM
> 
> On 6/1/2011 11:35 PM, RLVZ at aol.com wrote:
> > My K-3 has a high current problem on 20 and 30 meters but all of the
> other
> > bands are normal.
> >
> > Example currents into a Dummy Load as read on both the K-3 and Astron
> PS
> > ammeters are:
> >
> > -20 meters @ 40 watts draws 19 amps.
> > -20 meters @ 100 watts the "High Current" warning message comes on
> and
> > draws 28 amps on the Astron.
> >
> > All other bands 160-6 meters, 40 watts draws an average of 12 amps
> and 100
> > watts an average of 20 amps.
> >
> > Any idea what the K-3's problem is on 20&  30 meters?
> >
> > Thanks,
> >
> > Dick- K9OM
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