Bob- I tried doing the procedure just as you described, it works fine on all bands except 40 and 160. In the KAT 500 utility I activated all antennas for both 40 and 160 to see if it had any effect- it did not. What other settings in the KAT Utility would you check? I still can't switch the KAT to ant 3 for 160m ?? 73 & tnx for reply Paul w2eck