[Elecraft] k2/100 problem-help

[W3FPR - Don Wilhelm]

Reggie,

Check the power cord and the Anderson Power Pole connector at the KPA100 end 
carefully.  If the K2 is shutting down, it is quite likely that there is a 
bad connection somewhere in the power supply cord and components.

73,
Don W3FPR

----- Original Message ----- 
From: "k6xr" <k6xr at bak.rr.com>
To: <elecraft at mailman.qth.net>
Sent: Friday, December 24, 2004 7:47 PM
Subject: [Elecraft] k2/100 problem-help


> k2/100 and kat100 all working great on all bands at all power levels for
> months. Then two days ago I could not get the kat100 to hold swr after
> tuning. It goes all over the place causing power supply,and the  k2 to 
> shut
> down along with hi-reflec and hi-current.
>
> This occurs only on 40 meters. There is no problem on any other band or
> frequency. Now comes the strange part. If I pull the kpa100 dc cord, I can
> run the qrp and kat100 at 15.2 watts on all bands all frequencies with no
> problems forever! But if I connect up the dc cable, the problem starts at 
> 14
> watts and the kat/k2 go crazy on 40 meters.
>
> I have tried 3 different power supplies in different locations 6 feet or
> more from rig.
> Changed or checked out  all coax jumpers, Balun, ladder line, and antenna
> and ground.
>
> I can hook the k2 to my mfj-993 auto-tuner and there is no problem, it all
> tunes fine with the kpa100..
> I can manually tune with no problems with the kap100 powered up as well.
>
> Is it possible to have a problem with just 40 meters  on the kat100?  H s
> anyone else ever experienced this?
>
> By the way, I have a ts-570 coax switched into this same antenna setup and
> no problems with the switches or coax or antenna or it's parts.
>