You misunderstand about antenna.

ANT2424B is an antenna. In other words it is nothing other a metal. It won't have RJ45.

What you need is a pigtail cable rather than a RJ45.

1. Ensure your router's original antenna is detachable.
2. Detach the original antenna, you will see the connector is (usually) a SMA connector. But the ANT2424B is N-type connector so that they are connectable.
3. Buy a Pigtail Cable TL-ANT24PT.

http://www.tp-link.com/en/products/details/cat-5067_TL-ANT24PT.html

There are longer pigtail cables here
http://www.tp-link.com/en/products/biz-list-5067.html

Q&A/Connector type of TP-LINK Antenna
http://www.tp-link.com/en/faq-571.html

So Can I use it to receive signals Using Bullet M2HP Radio?

Wrong section, ask in the right one here http://community.ubnt.com/t5/custom/page/page-id/Forums

Charchit46 wrote

So Can I use it to receive signals Using Bullet M2HP Radio?

Wrong section, ask in the right one here http://community.ubnt.com/t5/custom/page/page-id/Forums