XBEE PRO Series 2 Range test not stable

I’ve made a very simple setup to test the communication between my XBEE’s. The first is set as a coordinator and the other one is set to end point.

Both of them communicate over channel 4545. I’ve also set the coordinator DH and DL with the SH and SL of the END DEVICE/ ROUTER. This improved the results of my range test a bit. But it still fails after a couple of packets (see screenshot).

What am i doing wrong?

I got it fixed :wink:

Forgot to also set the END DEVICE/ ROUTER DH and DL with the SH and SL of the COORDINATOR (the other way around).