Brian,
If you have not 'trained' the tuner on each band segment, the KAT500
will use the settings from the closest band segment where data is available.
After 'training' the tuner, do you switch the tuner to MANual? If not
you should. If left in AUTO, there will be times when the tuner will
try to tune even though it had already been tuned on that band segment.
That behavior is due to the fact that the forward and reverse power
cannot be measured at exactly the same time.
On SSB for instance, if the forward power is sensed at a time when the
audio is low, and then the audio increases when the reverse power is
measured. the SWR calculation will say (incorrectly) there is a high SWR
and the tuner will attempt to tune.
Leaving the KAT500 in MAN mode prevents that behavior.
Remember that an SWR of 1 is not essential. An SWR of 1.2 or 1.3 is
quite acceptable and will keep the KPA500 quite "happy".
73,
Don W3FPR
On 4/24/2018 3:55 PM, Brian D wrote:
Are the segments on fixed frequencies? I like to work through the bands I
use before contests to set up tuning. Sometimes in the following contest I
find a frequency which seems to be between segments, retuning within 10KHz
either side doesn't then seem to correct the tuning on the specific
frequency I want to use.
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