vertical radiator การใช้

• The station includes three Blaw-Knox diamond cantilever vertical radiator.
• It used forty vertical radiator elements, placed on the arc of a circle with a diameter of.
• The nose of early models was distinctively solid and sloped, when other makers had a vertical radiator grille.
• WDZ is diplexed ( i . e ., it uses the very same vertical radiator ) with co-owned 1340 WSOY.
• A shorter vehicle whip was more practicable and also field antennas were constructed with for example, vertical radiators constructed using the Racal 8 or 12 metre masts.
• By 1935, the engineering staff of WGY began to make plans to replace the T top antenna system with a single vertical radiator in the form of a tower.
• For television broadcasting specialized vertical radiators that are mostly modifications of the slot antenna or helical antenna are used : the slotted cylinder, zig-zag, and panel antennas.
• Cooling for the engines was achieved through vertical radiator blocks attached to the rear interplane struts on either side of the engine nacelles, which also supported the oil tanks for each engine.
• The height of a vertical radiator is related to the frequency ( or wavelength ) of the service transmitted, and for maximum efficiency should be one half of the station's wavelength.
• A majority of the frequency shifts were limited to between 10 and 30 kHz, which conserved the electrical height of a station's existing vertical radiator towers, an important factor for readjusting directional antenna parameters to accommodate the new frequency.
• For many years now Radio 4QR has shared ( with Radio 4QG, now 4RN ) a tall dual anti-fading guyed and sectionalised vertical radiator of 198 metres AGL with structural capacitative top hat located at Bald Hills on the northern outskirts of Brisbane.
• Engine choice determined the shape of the nose : the inline engine had a rectangular radiator mounted in front of it, projecting slightly above the upper fuselage line, whereas the radial was uncowled, with a pair of vertical radiators mounted in the small inner bays of the Type 138.
• The third was a 1500cc car and covered 88 laps before retiring : this car attracted attention for another reason, since it featured an imposing vertical radiator-grill at the front rather than a sloping grill of the style that by this time had become a standard feature of BNC track cars.
• Faced with the same conundrum of appearing modern, an envelope body at odds with a mandatory trademark, a vertical radiator grille, Rolls-Royce could do little better in autumn 1955 than offer a razor-edged 1941 Packard Clipper, albeit with a curved, one-piece windshield, as their new Silver Cloud and concurrent Bentley S-series.
• A more complex anti-fading antenna is a vertical radiator which is sectionalized and is one wavelength ( 360 degrees, generally 180 over 180 degrees, and historically and correctly termed a " Franklin " radiator; two in an array at WOAI radiator, but WOAI has since replaced this with a 195 degree radiator for lower maintenance cost at the expense of somewhat poorer " fringe " reception ).
• A simple anti-fading antenna is a vertical radiator whose height is between 1 / 2 wavelength ( 180 electrical degrees ) and 5 / 9 wavelength ( 200 degrees ), 195 degrees being considered ideal . 200 degree and taller simple radiators have largely fallen into disuse, although these can be useful on medium power stations, in which case radiators as tall as 5 / 8 wavelength ( 225 degrees ) are somewhat common.