[Elecraft] KAT500 - can't change antennas on 6 meters

[JK Hooper]

Hi all,  

Despite my making what-I-think are appropriate changes in the KAT500 utility (MacOS version), I am not able to switch antennas for 6 meters (50 MHz).   KAT500 always stays on Antenna 3.  

My work-around solution has been to put my antenna w/ 50 MHz capability on Antenna 3.  

Any opinions on why my KAT500 is not responding to antenna changes, either from the front panel or from the KAT500 utility?  

I have restored factory defaults; no change.  I have restored from saved configuration file (which appears ok) and no change;  still on antenna 3.   

Configuration: K4D, KPA500, KAT500 with Elecraft interconnect cables.  

Thanks in advance,

73
Hoop
K9QJS