They operate at 418 MHz with a range of better than 300 feet and are designed for unlicensed operation under FCC Part 15. Building a wireless system is easy with these new transmitter and receiver modules. For the SAW based superhetrodyne receiver which has excellent stability and sensitivity, you also simply apply power and attach an antenna to recover the data stream. Absolutely no adjustments of any kind are required. All of the RF components are encapsulated so no sensitive components are exposed and the circuits cannot be detuned by moving coils or capacitors.
Power supply filtering and bypassing is provided on the module by a resistor and tantalum capacitor.
Then design and build your own custom wireless system using these modules for the wireless part of your design. Encoders and decoders offer a simple way to automatically generate serial data to feed into the transmitter and to recover it from the receiver. This technique rejects noise and assures that only valid data will be received and your robot will not become a runaway. If they are used in a product, that product must be submitted to a testing laboratory and FCC certified before it is sold.