I have two that are pretty much identical. K3/100W/Auto-tuner/2 optional filters Receiver 1: 2.7/500/200 Receiver 2: 2.7/500/200 SN 4xxx Receiver 1: 2.7/500/250 Receiver 2: 2.7 SN7xxx Power cords, manuals on each included. Both look the same, no issues. $2,100 for either, off line response please. -73- Frank KG9H kg9hfrank at gmail.com