I am building a new K2 and am selling the one I bought assembled. It is well built and perfectly functioning. SN 3654 CW only with following options: Noise Blanker (KNB2), Internal DSP (KDSP2), Antenna tuner (KAT2), Serial I/O (KIO2). (This unit does not do SSB or cover 160 meters.). Will sell for $875 plus shipping. I have all the manuals. Dave N1IX