Connecting external antenna


I have a very basic question of connecting an external antenna to a 433 receiver.

I have an Aurel RX-4M50RR30SF receiver, to which I’d like to connect T433,92 AUREL whip antenna.
Pin 3 of the receiver is marked as antenna, so should I connect pin 3 to antennas core wire and that’s it ?
Antenna comes with a red ground wire - should it be connected anywhere ? I’m quite lost basically :).



I would have gotten the antenna with the coax lead. Use the red lead to connect the base of the antenna to pin 2 (Ground) of the radio.

Thanks John.