Originally Posted by jhautz

As far as I can tell the one with an external antenna wire actually has dual antennas. An internal and an external. I haven't had any range problems and I use some of both kind of recievers. But I really only drive on a track so range requirements are limited. If I was planning on using this for speed runs or something where range really would be tested, I would pick the dual antenna version for sure. Other than that I don't see any difference in performance personally.