I don't test out to failure. If you I can get 100 feet with no jitters and the tx antenna collapsed, then I feel like I'm fine. I got to 75 feet with all kinds of walls between, so I called that good. Again, I've not had any issues. I'm in no way advocating it for others, just sharing my experience. I know a lot of people (myself included) who tie the end of the antenna in a knot to keep it from slipping back up into the fuse. This has also never affected my range.