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  2. Frequency modulation - Wikipedia

    en.wikipedia.org/wiki/Frequency_modulation

    For example, narrowband FM (NFM) is used for two-way radio systems such as Family Radio Service, in which the carrier is allowed to deviate only 2.5 kHz above and below the center frequency with speech signals of no more than 3.5 kHz bandwidth.

  3. Types of radio emissions - Wikipedia

    en.wikipedia.org/wiki/Types_of_radio_emissions

    The International Telecommunication Union uses an internationally agreed system for classifying radio frequency signals. Each type of radio emission is classified according to its bandwidth, method of modulation, nature of the modulating signal, and type of information transmitted on the carrier signal.

  4. Flavin group - Wikipedia

    en.wikipedia.org/wiki/Flavin_group

    The flavin moiety is often attached with an adenosine diphosphate to form flavin adenine dinucleotide (FAD), and, in other circumstances, is found as flavin mononucleotide (or FMN), a phosphorylated form of riboflavin. It is in one or the other of these forms that flavin is present as a prosthetic group in flavoproteins.

  5. Flavin mononucleotide - Wikipedia

    en.wikipedia.org/wiki/Flavin_mononucleotide

    Flavin mononucleotide (FMN), or riboflavin-5′-phosphate, is a biomolecule produced from riboflavin (vitamin B 2) by the enzyme riboflavin kinase and functions as the prosthetic group of various oxidoreductases, including NADH dehydrogenase, as well as a cofactor in biological blue-light photo receptors. [1]

  6. List of amateur radio modes - Wikipedia

    en.wikipedia.org/wiki/List_of_amateur_radio_modes

    Morse code is called the original digital mode. Radio telegraphy, designed for machine-to-machine communication is the direct on / off keying of a continuous wave carrier by Morse code symbols, often called amplitude-shift keying or ASK, may be considered to be an amplitude modulated mode of communications, and is rightfully considered the first digital data mode.

  7. Federated Mission Networking - Wikipedia

    en.wikipedia.org/wiki/Federated_Mission_Networking

    Federated Mission Networking (FMN) is a significant initiative to help ensure the interoperability and operational effectiveness of the North Atlantic Treaty Organization. It is a key contribution to the Connected Forces Initiative, [1] helping Allied and Partner forces to better communicate, train, and operate together. [2]

  8. Non-negative matrix factorization - Wikipedia

    en.wikipedia.org/wiki/Non-negative_matrix...

    In chemometrics non-negative matrix factorization has a long history under the name "self modeling curve resolution". [9] In this framework the vectors in the right matrix are continuous curves rather than discrete vectors.

  9. Flavin adenine dinucleotide - Wikipedia

    en.wikipedia.org/wiki/Flavin_adenine_dinucleotide

    Two types of P450 systems are found in eukaryotes. The P450 systems that are located in the endoplasmic reticulum are dependent on a cytochrome P-450 reductase (CPR) that contains both an FAD and an FMN. The two electrons on reduced FAD (FADH 2) are transferred one at a time to FMN and then a single electron is passed from FMN to the heme of ...