Things like the RTL-SDR can be any kind of radio you like on almost any frequency you like ... faced when trying to connect a Sennheiser wireless microphone to some receivers.

The DJI Mic delivers wireless recording using the 2.4GHz frequency band with a range of ... DJI Mic feels a lot like Christmas: inside you'll find the DJI Mic Receiver, two DJI Mic transmitters ...