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  2. Office de Radiodiffusion-Télévision du Mali - Wikipedia

    en.wikipedia.org/wiki/Office_de_Radiodiffusion...

    Private broadcasters were legalised, and RTM was reorganised as the ORTM on 1 January 1993. ORTM was seized by National Committee for the Restoration of Democracy and State (CNRDR) forces on 21 March 2012 as part of the 2012 Malian coup d'état. [3] A thousand-person protest was held on 26 March, chanting "Down with Sanogo" and "Liberate the ...

  3. Frequency meter - Wikipedia

    en.wikipedia.org/wiki/Frequency_meter

    Microwave-frequency absorption frequency (or wave) meter. A frequency meter is an instrument that displays the frequency of a periodic electrical signal. Various types of mechanical frequency meters were used in the past, but since the 1970s these have almost universally been replaced by digital frequency counters.

  4. Absorption wavemeter - Wikipedia

    en.wikipedia.org/wiki/Absorption_wavemeter

    An absorption wavemeter is a simple electronic instrument used to measure the frequency of radio waves. It is an older method of measuring frequency, widely used from the birth of radio in the early 20th century until the 1970s, when the development of inexpensive frequency counters, which have far greater accuracy, made it largely obsolete.

  5. Frequency counter - Wikipedia

    en.wikipedia.org/wiki/Frequency_counter

    A frequency counter is an electronic instrument, or component of one, that is used for measuring frequency. Frequency counters usually measure the number of cycles of oscillation or pulses per second in a periodic electronic signal. Such an instrument is sometimes called a cymometer, particularly one of Chinese manufacture. [citation needed]

  6. AN/URM-25 signal generator - Wikipedia

    en.wikipedia.org/wiki/AN/URM-25_signal_generator

    The carrier frequency can be set by interpolation using the graduated dial. Additionally, the URM-25's have a BNC connector for constant 200 mV output that can be connected to a frequency meter to display frequency accurately. A sufficient warm-up period is required to ensure the best stability at higher frequencies.

  7. EMF measurement - Wikipedia

    en.wikipedia.org/wiki/EMF_measurement

    An EMF meter is a scientific instrument for measuring electromagnetic fields (abbreviated as EMF). Most meters measure the electromagnetic radiation flux density (DC fields) or the change in an electromagnetic field over time (AC fields), essentially the same as a radio antenna, but with quite different detection characteristics.

  8. 23-centimeter band - Wikipedia

    en.wikipedia.org/wiki/23-centimeter_band

    The 23 centimeter, 1200 MHz or 1.2 GHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio and amateur satellite use on a secondary basis.

  9. Encoder receiver transmitter - Wikipedia

    en.wikipedia.org/wiki/Encoder_receiver_transmitter

    Encoder receiver transmitter (ERT) is a packet radio protocol developed by Itron for automatic meter reading. [1] The technology is used to transmit data from utility meters over a short range so a utility vehicle can collect meter data without a worker physically inspecting each meter. The ERT protocol was first described in U.S. patent ...

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