If you have connected the tvlink+ exactly the same on both boxes (i.e. sat box, rf to tvlink+, rf to distribution system) then the remote commands should feed to the tvlink+ and on to the sat box using the IR sender just the same. So if the setup is identical with box boxes and we all know the remote control protocal is the same then your problem lies with the TM-600. The RF output of your TM-600 must be interfering with the tvlink+. To test it disconnect the rf out from the TM-600 and try the remote in front of one of the remote magic eyes. Obviously you will have no picture on the remote tv but if you have someone watching the main tv where the stb is then if you try say turning the stb over from the remote location then your watcher looking at the stb connected tv (scart) will be able to see if the remote eye is operating. Then you will know the problem is with the rf output of the TM-600. Possibly some setting change needed in the menu or your TM-600 is faulty. I have setup a tm-600 with global tvlink+ no problem. Maybe a dc blocker at the rf output of the TM-600 will cure the problem.