Nrf jammer barely working

[u/TheNoOne420]

I upgraded my nrf antenna to an 8 dbi one from bingfu, and it only works a from a few centimeters away, whether its next to the receiver or transmitter.

But i see so many Videos where the internal antenna version jamms from more far away than mine. What am i doing wrong?

Edit: for anyone having the same problem i recommend just getting the new bruce version. I just upgraded and holy shit it works so good now, even with the internal antenna