Quote Originally Posted by DBMandrake View Post
433Mhz key fobs (if you mean car key fobs) are all digital. As are most other things that use 433Mhz like weather stations.

It's been a very long time since any sort of remote control was analogue...
Technically no RF is digital, not Wifi, not GSM. Mother nature does not do digital.

But I take your point that the payload is digitally encoded.

It is the analogue nature of RF that scares me from an electronics perspective. Dealing with I2C or SPI control over an interface that ends up on Wifi or whatever I'm fine with, but if I had to design a board with an RF chip on it, the mathematics becomes intense very quickly.