As Alan has aready confirmed, the pigtail is OK.
While waiting for pigtail, test/try your setup using the whip antenna which came with the dvb-t dongle. This whip's cable does not require any pigtail or adapter, and plugs directly into the dongle.
You wont get many aircrafts with the whip, but it will test and prove your hardware & software is working OK.
Dont forget to place whip over a large metallic object like a food can or tin. Keeping the whip antenna near an outer wall, or still better, near a window, will improve reception.
![](https://s20.postimg.org/6ijuw0qil/20170731_094816.jpg)