If this has already been discovered by someone else, I apologize for rehashing old news. I did not find a similar thread anywhere, so this may be of great interest to many of you. After longing for quality wireless controllers for Atari systems since the 80's, the wait is finally over. This is the best option available that I know of currently. I have tested it on my 800XL and 7800. Here's how to accomplish it.
1. Buy one (or two for multiplayer) 8Bitdo NES or SNES style Bluetooth controllers. https://www.amazon.c...keywords=8bitdo
2. Buy an SNES receiver for each 8Bitdo controller. https://www.amazon.c...o snes receiver
3. Buy an SNES to Atari adapter cable for each 8Bitdo SNES receiver. http://www.raphnet-t...o_db9/index.php
This setup works flawlessly. Stability of the connection between the controller and Atari is rock solid. It is hands down the best wireless experience I have ever had on an Atari system, and it completely blows away the RF garbage such as the wireless Genesis controllers, original wireless 2600 controllers, and crazy setups that run through NES Four Scores and a bunch of other equipment. The 8Bitdo products are available for lower prices on ebay. I linked to Amazon for ease of viewing.