FM modulation is the process of converting digital data into frequency variations of a carrier wave. There are different methods of FM modulation, such as binary frequency shift keying (BFSK ...

In binary radio pulsar system J0737-3039, slow pulsar B shows orbital modulations of intensity, being especially bright at two short orbital phases. We propose that these modulations are due to ...

By considering the case of RS CVn binary systems, it is found that the surface angular velocity variation of the secondary component required by Applegate's hypothesis is between 4 and 12 per cent, ...

Made during WWII by the War Department, this official training film describes what frequency modulation (FM) is and how to use it in reference to radio communications. It also provides the comparison ...