433MHz Resiver gets only "some" data

I tried to resive 433Mhz Data from any device around me (I got two weather stations). I’m using this device:

And I’m using the RFControl Lib.

But I dont get any data… when I send data by myself with:

I get Data… so this works. Im using the Alecto-1200 Weather station and want to get all the information from it.

Why I dont get any Data around me? Thanks :slight_smile:

PS: Yes I#m using an antenna