The RFM12/69 modules can be configured in OOK mode and thus operated like a stupid receiver module on the Arduino Nano. An example could be the reception of FS20 signals in Ethersex (https://github.com/ethersex/ethersex/blob/master/hardware/radio/rfm12/rfm12_fs20.c). With a little adjustment, you could then perhaps also operate the popular JeeLinks v3/v3c with SIGNALduino.
For RFM69 there's even an OOK library that could be used.
The RFM12/69 modules can be configured in OOK mode and thus operated like a stupid receiver module on the Arduino Nano. An example could be the reception of FS20 signals in Ethersex (https://github.com/ethersex/ethersex/blob/master/hardware/radio/rfm12/rfm12_fs20.c). With a little adjustment, you could then perhaps also operate the popular JeeLinks v3/v3c with SIGNALduino.
For RFM69 there's even an OOK library that could be used.