CC110101 868Mhz Arduino Uno doesnt work

[Zaath1988]

Hi, I own 2pcs CC1101 868MHz modules (https://shorturl.at/chyN5), several Arduino Unos and RTL SDR V4 Stick. Im using default pinout From the spi (SCK_PIN = 13; MISO_PIN = 12; MOSI_PIN = 11; SS_PIN = 10) but tried own Pins too (setSpiPin), and tried to run the minimal examples (just changed the frequency), but I dont see anything on SDR# and HackRF. At start, Im receiving the „Connection ok“ on serial port, every sending ends without an error. I tried with GDO0 and without, I tried with a different GDO0 Port using setGDO0 - still nothing.

Any advice what I could check?