Thanks Brian. I worked with Gary at Elecraft support who was a
big help in shooting the problem. Your message was also an
important clue, and maybe knowing about my problem will help you
with yours.
I ended up taking out the 2M board and the ATU board and the KX3
worked. I added in the ATU board and it still worked. When I put
the 2M board in, the problem became intermittent. (GRRRRR!) I
finally got it so I could poke at one corner of the 2M board and
make the problem appear and disappear.
It appears that my problem was being caused by having the
antenna coax for the 2M SMA connector touch a toroid on the ATU
board. The 2M board installation instructions warn about
allowing that to happen. Just moving it caused the problem to
appear and disappear. I'm hoping I have cured the problem, but
time will tell.
73 Bill AE6JV
On 6/19/18 at 9:30 AM, brian.waterwo...@gmail.com (Brian
Waterworth) wrote:
Hi Bill,
I too suffered from issues as you are now with my KX3. Into a dummy load I
was getting high SWR numbers. I have been so busy at work that I haven't
had the time to find the fault, but what does seem to work for me is not to
tighten the case bolts too tightly. Looser is better, but not so loose
that the rear legs are flopping about. When I relieve the tightness on
these bolts, SWR values always settle around 1.0-1.2 depending on the
antenna. Too tight and SWR jumps up to between 3-15. This sounds to me
like a bad ground somewhere. Just haven't had the time to investigate.
Another time that I had the types of SWR you are observing (25+, even 45+
for me), a few years ago, I had to send the KX3 back to Elecraft and they
repaired something. I am not at home now so I can't recall specifically
what they repaired. The prevailing theory of the issue was perhaps a
static discharge from the antenna during the winter months when I connected
the KX3 one day. This was my first experience with static discharge in the
antenna system, assuming that was the problem that fried one of the
components in the KX3. Again, can't recall which component (actually a
surface mount chip on one of the larger components), but it needed to be
replaced.
regards,
Brian
VE3IBW
On Mon, Jun 18, 2018 at 8:42 PM Bill Frantz <fra...@pwpconsult.com> wrote:
Thanks for reminding me to look at dumb things.
Yes, the BNC was pugged into the tuner board. Note that the
radio has been working well for a while. I ran FT8 in New
Hampshire using it in April/May. The most recent venture into
the inside was to pull the batteries to recover from a hung
firmware load. That load worked after getting other programs and
the PX3 out of the way.
73 Bill AE6JV
On 6/18/18 at 5:29 PM, ghyoung...@gmail.com (Grant Youngman) wrote:
Probably a dumb question, but did you unplug the jumper from
the BNC connector to the main board and plug it into the tuner board?
Grant NQ5T
K3 #2091, KX3 #8342
On Jun 18, 2018, at 8:04 PM, Bill Frantz <fra...@pwpconsult.com> wrote:
AE6JV
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