First off, sorry to revive this. I just discovered the (new?) 8-pin CC1101 modules and thought "hey, it uses the same socket as the NRF24". So I tried comparing the pin positions. And to my surprise they seem very compatible: GND -> GND CE -> GDO0 SCK -> SCK MISO -> MISO 3.3V -> 3.3V CSN -> CSN MOSI ->MOSI IRQ -> GDO2 To me this radio would have a few advantages over the RFM69: Plug and play. I could plug it into the Nano wireless expansion boards. Built in antenna socket. I think it could be advantageous to use a 433 radio that is plug-in compatible with the NRF24 in this way. 3D printable cases and open hardware designs would only need to support one socket design and still support both frequencies. The STM8S103F3P6 (the "1$ arduino") has a version with built in socket, and expressly advertises that it is compatible with both radios. There is an STM32 version with a socket too. As someone who started by using the NRF24, I've long wished I could easily switch to the 433Mhz band instead. Supporting the CC1101 would make that as easy as plugging in a new radio.