[Elecraft] [K3] RF Cal Fails

[Donald Thompson]

I just added KBPF3, KRX3 and KPA3 to my K3 which already had KAT3 and
KXV3A.  All looks good until I tried to perform the RF Calibrate from the
Utility Calibrate Tab.  All firmware is current and the utility is latest
version on OS-X.
I tried two different dummy loads and two different cables to AT1.  The
calibrate runs clean at the lower frequencies but stops at :
Calibrating at 10.125 MHz
SWR 10.1:1 is too high for calibration
Verify that a dummy load is attached to AN1
5W calibration failed.
I did this ok previously before adding the new options.
Any ideas?
Thanks,
Don KA1KU