Rare Tentec 405 Amplifier.50watts output on 10-80 meters.Great with K2 or 817.Excellent condx, 9/10.Works great.Used with my K2 which I no longer have.Compact 4.5 x 6.5 x 7 inches and about 4 pounds.Includes manual, cables, and CONUS shipping. $195. Larry W8GTT reply to hessls at csi.com