[Elecraft] K3 Ant 1?

[Joe Subich, W4TV]

Tom,

>> So, here is the question. If the SO239 was bad at Ant1, why does it
>> work on all bands except 20m? Unfortunately, this was a factory
>> built unit, #250, so my knowledge of the insides is very sketchy.
>> What do I need to look for?

Before doing anything else, connect the dummy load to Ant 1, turn
on the ATU and run a couple ATU Tune cycles.  The K3 stores antenna
and tuner data on a per antenna per band basis and it's possible
that the data has gotten scrambled.  If nothing else running the
ATU Tune cycle might get the tuner off a "bad" setting ....

73,

    ... Joe, W4TV


On 11/26/2010 5:23 AM, cx7tt at 4email.net wrote:
> Need help with some troubleshooting...here is the background:
> After being gone for a month I returned to find that my iMac would not
> boot up, the LP100 display had noticeably dimmed and my Steppir 3 ele
> beam had super high SWR on 20m only. Although I had disconnected p/s and
> antennas, we had an unusual amount of t-storm activity while gone. I
> assumed that static discharges had somehow placed gremlins into my
> shack. The local Apple guy was able to get the iMac running with no loss
> of data and Larry kindly helped with getting the latest display chips
> installed but that left the Steppir...why it worked great on 17-6m and
> it was a mystery on 20m with  infinite swr across the band, even after
> doing the calibrate procedure.
> Yesterday I decided to upgrade the software of my Orion II and then
> later the K3. After the O II upgrade I connected the Steppir and was
> surprised to see that the swr was normal across the 20m band; I then
> tried it on the K3, infinite swr...I then tried a dummy load on the k3
> and yes, infinite swr but only on 20m. I then moved the dummy load to
> Ant 2 and all was fine. I then hooked the Steppir to Ant 2 and
> everything is working great.
> So, here is the question. If the SO239 was bad at Ant1, why does it work
> on all bands except 20m? Unfortunately, this was a factory built unit,
> #250, so my knowledge of the insides is very sketchy.
> What do I need to look for?
> Tnx
> Tom
> CX7TT
> aka CW7T in CQ WW cw...
>
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