Don,
By "latest firmware" do you mean latest released
firmware or beta? I ask because I may have seen
that phenomenon, too, but have not been able to
repeat it on a reliable basis.
73, Phil w7ox
On 5/20/14, 7:11 AM, Don Wilhelm wrote:
Andy,
There have been improvements in the firmware to
address exactly that re-tuning problem. It has
to do with the measurement of SWR - during SSB,
if the reflected power is sampled at a voice
peak and the forward power is sampled during a
period of low RF, the resulting calculation will
think the SWR is high and re-tune. There have
been changes made to the firmware to attempt to
smooth that measurement over a longer period of
time.
If you are not using the latest firmware, give
it a try.
After 'training' the tuner, you may want to run
it in Manual mode rather than letting it
auto-tune 'on the fly'.
73,
Don W3FPR
On 5/20/2014 8:44 AM, ANDY NEHAN wrote:
I am having some problems with my understanding
of the KAT500.
I have a K3 and an ACOM1000 linear. On 40m when
I operate data modes or AM (purely for testing
purposes) all is well the units work well
together. I can happily run up to 400 watts and
as is well. My 40m OCFD has an SWR of about 1.2:1.
But when I operate SSB things go "odd". For no
apparent reason the KAT500 starts to retune
part way through and over and enters a fault
condition (on the same frequency as I was using
for data - so there is no frequency change
involved) and the Auto button flashes. Now I
have looked in the manual and cant find the
meaning of the flashing Auto LED.
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