How can I get antennas for TX1?

Hi! I broke my antennas of my TX1 and I’m using similar-looking antennas instead. Recently I found that using these similar-looking antennas downgrades the wireless communication of my TX1 boards. So I was wondering how I can get/buy antennas of TX1? Or is it possible that I get the specs of the antennas so I can buy other antennas with the same specs?

Thank you!

Hi, please check the wireless compliance doc in download center, there are antenna part number and related RF info in it.