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The pointed lower end of the antenna ended in a large ceramic insulator in the form of a ball-and-socket joint on a concrete base, relieving bending moments on the structure. The first, a 665 foot (203 m) half-wave mast was installed at radio station WABC's 50 kW transmitter at Wayne, New Jersey in 1931.
The Sri Lanka Broadcasting Corporation (SLBC), formerly Radio Ceylon, is the oldest radio station in Asia, and was founded as Colombo Radio in 1925. Edward Harper who was then the Chief Engineer at the Telegraph Department in 1921, was the first person who initiated experimental broadcasts in Ceylon.
Often called “Windom” antennas – By carefully selecting the feedpoint position at about 1 / 3 of the length of a half-wavelength wire, its feedpoint impedance is nearly constant for a variety of nearly-harmonic frequencies of the half-wave frequency. All Windom-style antennas have wide coverage gaps in between their nearly ...
When the antenna is fed at a point of maximum current, as in the common center-fed half-wave dipole or base-fed quarter-wave monopole, that value is mostly the radiation resistance. However, if the antenna is fed at some other point, the equivalent radiation resistance at that point R r a d 1 {\displaystyle \ R_{\mathsf {rad\ 1}}\ } can easily ...
Altair is a residential and commercial development under construction in Colombo, Sri Lanka. The building has a 68-floor vertical tower and 63 floor leaning or sloping tower . [ 4 ] At 240.0 m (787 ft), the building will be one of the tallest buildings in Colombo when it is completed.
Sri Lanka Broadcasting Corporation – Live Streaming; Sinhala Radio Live Streaming – Test. Archived 18 February 2020 at the Wayback Machine. SLBC-creating new waves of history (archived) Eighty Years of Broadcasting in Sri Lanka (archived) Lata Mangeshkar and Radio Ceylon, in the Marathi language.Archived 24 July 2011 at the Wayback Machine.
Radio broadcasting in Sri Lanka dates to 1923. Radio broadcasting, like other forms of media in Sri Lanka , is generally divided along linguistic lines with state and private media operators providing services in Sinhala , Tamil , and English language.
Dialog was the first mobile operator to cover the Jaffna peninsula in Northern Sri Lanka within 90 days of the ceasefire agreement in 2002 [10] and again in 2009 was the first mobile operator to extend its GSM network to the areas in the North and East Province where the war was fought, [10] and presently has 80% market share in the region.