My new KPA-1500 serial number 00259 arrived UPS about 2pm. It was ordered on February 29. I disassembled it and put Caig DeOxit on all the cable connector pins. It tested excellent on the service bench. It is in line now on my K3S and working well. It is beautifully built. I am impressed. 73's Ron Durie WB4OOA Elecraft K-Line 704-843-3681