I have a TenTec 1209 2/56M transverter, but the 1208 is very similar. I use mine with a Kenwood TS-700SP for 6M, and aside from a few "birdies", it works fine. I'm sure there are higher performance units than the 1208 for the K2, but the TenTec, in my opinion, represents the "biggest bang for the buck". 73, Mike