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  2. Marine VHF radio - Wikipedia

    en.wikipedia.org/wiki/Marine_VHF_radio

    Marine radio was the first commercial application of radio technology, allowing ships to keep in touch with shore and other ships, and send out a distress call for rescue in case of emergency. Guglielmo Marconi invented radio communication in the 1890s, and the Marconi Company installed wireless telegraphy stations on ships beginning around 1900.

  3. Three-point lighting - Wikipedia

    en.wikipedia.org/wiki/Three-point_lighting

    Back light or rim light is different from a kick in that a kick (or kicker) contributes to a portion of the shading on the visible surface of the subject, while a rim light only creates a thin outline around the subject without necessarily hitting the front (visible) surface of the subject at all.

  4. KYKR - Wikipedia

    en.wikipedia.org/wiki/KYKR

    KYKR (95.1 FM, "Kicker 95.1") is a radio station broadcasting a Country format. Licensed to Beaumont, Texas , it serves the Beaumont/ Port Arthur metropolitan area, owned by iHeartMedia, Inc. The "Kicker" branding and country format were first broadcast on 93.3 FM (now KQBU-FM ) under the current call sign in 1980, owned and operated by Steve ...

  5. Types of radio emissions - Wikipedia

    en.wikipedia.org/wiki/Types_of_radio_emissions

    Wide FM, 20.0 kHz width, ±5 kHz deviation, still widely used for amateur radio, NOAA weather radio, marine, and aviation users and land mobile users below 50 MHz [2] 11K2 F3E Narrow FM, 11.25 kHz bandwidth, ±2.5 kHz deviation – In the United States, all Part 90 Land Mobile Radio Service (LMRS) users operating above 50 MHz were required to ...

  6. Maritime mobile amateur radio - Wikipedia

    en.wikipedia.org/wiki/Maritime_mobile_amateur_radio

    An amateur radio installation on a 28' yacht, including 100W HF transceiver with microphone, manual antenna tuner, and morse key. Maritime mobile amateur radio is an amateur radio transmission license that allows maritime operators to install and use radio while they operating at sea. The call sign of operators is extended by adding the suffix ...

  7. 2182 kHz - Wikipedia

    en.wikipedia.org/wiki/2182_kHz

    2182 kHz is analogous to channel 16 on the marine VHF band, but unlike VHF which is limited to ranges of about 20 to 50 nautical miles (40 to 90 km) depending on antenna height, [3] communications on 2182 kHz and nearby frequencies have a reliable range of around 50 to 100 nautical miles (90 to 190 km) during the day and 150 to 300 nautical miles (280 to 560 km) or sometimes more at night.

  8. Backlighting (lighting design) - Wikipedia

    en.wikipedia.org/wiki/Backlighting_(lighting_design)

    In photography, a back light (often the sun) that is about sixteen times more intense than the key light produces a silhouette. A fill flash used with a backlit subject yields more even lighting. The vertical angle of the back light can change the effect. A low angle can make the light hit the camera lens, causing lens flare. A high angle can ...

  9. AN/PRC-153 - Wikipedia

    en.wikipedia.org/wiki/AN/PRC-153

    The USMC ordered 60,000 radios to be used until replaced by the more complex Joint Tactical Radio System (JTRS) cluster 5 spiral 2 radio in 2013. [2] However, JTRS was cancelled in October 2011, [3] and thus the PRC-153 continues to serve. The IISR is a Motorola XTS 2500i [4] with embedded encryption module to provide secure voice communications.

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