I've still found the best 900 MHz IoT radios to be LoRa radios that let you operate in raw radio mode instead and are basically 900 MHz USB to wireless-serial a

I've still found the best 900 MHz IoT radios to be LoRa radios that let you operate in raw radio mode instead and are basically 900 MHz USB to wireless-serial adapters. I bought several LoStiks back in the day and that's primarily what I did with them. More for true IoT use cases than trying to cram data over the smaller unlicensed sub 1 GHz bands though.