[Elecraft] KAT500 Tuning Issue with V1.67

[KM4VX]

Since updating to 1.67 my KAT500 tuner is behaving strangely. It won't tune
my 40 meter dipole on "auto" and when the KAT500 is placed in "bypass" the
K3 autotuner tunes the same antenna perfectly. I have tried different coax,
but the K3 autotuner at 25 watts output tunes the antenna nicely while the
KAT500 does not. Both the KAT500 and the W2 wattmeter go nuts when I try and
tune the 40 meter dipole through the KAT500. In KAT500  "bypass" the meters
on the KAT500 and W2 continue to show very high SWR but the K3 autotuner
works fine and presents a perfect SWR to the K3. The KAT500 has no problem
with the higher bands. My KX3 tunes this same 40 meter dipole through the
KXPA100 with no problem. It must be something in the KAT500.  Anyone else
having this problem? Is this a problem with V1.67? Thanks Ron KM4VX



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