If it won't tune to a dummy load then something is really wrong. 73
de Alex NS.Y.
On Jun 20, 2006, at 6:24 AM, Brian Murrey wrote:
Any experts on KXAT1 debugging?
Yesterday I had the KX1 in the car with the 20m hamstick and for
about half
the
day I was about to work Florida, Mass, Texas...with 2w and the
KX1. I was
using the KXAT1 to tune my hamstick, even though I have the
hamstick adjusted
to 1.2 : 1 without the tuner.
BIG storm comes along, I'm not running CW now, I'm driving and
listening to CW
and lots of static. So I shut off the rig and keep tooling on down
the road.
About 20 mins later I pull into Riley Park in Greenfield IN and and
park so I
can play radio...except the KXAT1 is saying I am only putting out .
05 watts,
then sometimes maybe .09 watts...SWR is like 8:1 now. So I move
the car...I
am in the clear...nothing metal near me...same thing. huh.
When I get home I take the rig in to the radio room and attach it
to the attic
dipole, that never fails.
I put it in auto tune mode...on 40m...SWR reads 9:1 on the KX1 but
1.2:1 on my
external meter. I take it out of auto tune...do a manual
tune...KXAT! says SWR
is 9.9:1 and power out is less than half a watt...on a 14.0v power
supply.
So I go through the ATU setting, no error code (showing E00). I
yank the
KXAT1, jumper pins 1 and 3 on J7...which now makes it a KX1 without an
internal ATU.
I connect it to my external antenna tuner/SWR meter and tune for
1:1 SWR and
I'm getting almost 3w on 40m, 4w on 30m, and 2.8w on 20m....like
normal...according to the external meter. Made a couple of QSO's
and got 579
and
599...meter showing just about 3w as expected.
So what happened to my KXAT1? Did the firmware take a dive?
I also notice that when I transmit now, I only get one LED at the
far left of
the display to pop on...it used to show three or four...external
meter shows
3w usually. I did reset to factory defaults, turned the 30m back
on...maybe I
don't know what the SIG settings should be...
Anyone have any ideas? I have tuned C9 on the KXAT1 for the lowest
DC voltage
at the REFL point...I'm getting .62 vDC. I have stepped through the
relays and
they all click when activated, so I'm kind of stumped other than
thinking the
firmware got hosered up somehow in the storm. It will not tune to a
dummy
load...or at least the LED display says it won't.
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