|This is the last time your account was accessed.|
The 6416 uses a IR Remote, I don't about the others, but I think they do also. While I haven't used a converter (not really an extender) since I went to FIOS, I have used them extensively with Satellite & Cable Boxes. From my experience I can say they are really STB independent, don't matter what kind of box or service you're using.
What they do is convert the IR signal to a RF signal, send it to a remote location, then convert it back to IR. Example: You are in the room with the TV, the Set Top Box is in another room. You are using the IR remote that came with the box. Somewhere in the room with the TV, you place the transmitter. You aim the remote at it and press the function you want. It converts it to RF and sends it. In the room with the box, you have placed the receiver facing the box and it receives the signal converts it back to IR and transmits the function to the box, like changing the channel.
I have used them between rooms and in rooms on different floors without problems. I have used 2 different brands, Recontron & RCA. They both worked equally well, but the Recontron were cheaper and more readily available. I think I got them either at Radio Shack or Best Buy. They need to be plugged into an electrical outlet. They are small ( 4" x 4" ) and pyramid shaped with a small attenna.
These will absolutely do what you said you wanted to do.