The RF Coax Assembly can be used when you need a replacement lead out to your antenna from your module.
perfect match with the empty DJT module cases. review by Eric on 1/26/2015
Used while building my own TX module for Hubsan X4. Worked perfectly for my project. Empty module plus this antenna lead is much cheaper than any other DIY empty cases i could find... So not only is it FrSky but its quite inexpensive too.