I use the FT-1000MP Mark V Filed with the antenna tuner MAC-200 from SGC. After the MAC-200 tuned the antenna to the best SWR it=B4s possible to improve the SWR by switching on the FT-1000MP internal tuner. Do anybody expect problems with the FT-1000MP by using two=20 tuners at the same time together ? Have a nice weekend! Bye.. Thomas, DG8FBV --- www.Otterbein-INet.de/afu.htm