The receiver gets your commands from your transmitter control inputs and passes those signals on to the flight controller. So it's important your receiver and transmitter speak the same language or protocol. That seems obvious but the reason I bring it up is different brand transmitters and receivers have different protocols and sometimes even within the same company's brand (i.e. FrSky) their transmitters and receivers use different protocols!
Some transmitters are able to communicate with most types of receivers through the use of multi protocol modules either internally installed or through an external connection in a module Bay. The RadioMaster TX16S is a good example of that type of transmitter.
Usually the communication between transmitter and receiver is done at the 2.4 gigahertz frequency band but you can also get receivers and external modules (or transmitters) which work with them that operate at the 900 megahertz frequency band such as the TBS Crossfire or the FrSky R9 systems. With a 900 megahertz band you can fly farther and through and around obvious without losing your control signal more so than you could when using the 2.4 gigahertz band. Just make sure before you purchase a transmitter and a receiver you know which protocol you want to use.
My "go-to" is the TBS Crossfire 900 mhz system (which I highly recommend over that of the FrSky R9 system). This requires either a TBS Tango transmitter or external TBS Crossfire module for your transmitter (I use the TBS Crossfire Lite, however, the Micro version is an outstanding choice). The receiver and antennae I use for this system are below.
If you'd rather not use an external module yet and spend the additional cash now on a 900 Mhz system like Crossfire or the enhanced 2.4 Ghz ImmersionRC Ghost system (with Chirp Spread Spectrum & Adaptive FHSS-see Transmitters page of this site), I'll keep it very simple for you - get the RadioMaster R161 telemetry receiver. It's simple, it works, its inexpensive and you don't have to worry about what firmware is on it as you do with FrSky!
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