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Topic: Radio masts and towers

	Satellite and SubSea Cable Communications Technical Equipment
		Climbers and Companies wishing to work on BT radio towers must comply with this Code of Practice and submit a signed copy of the form at the end of it confirming their agreement.
		Companies climbing regularly on BT towers are encouraged to submit competence details for all their climbers and to regularly update them.
		All climbers on BT towers must undergo periodic medical examinations to ensure that they do not have any medical conditions which may interfere with their work or put themselves or others at risk.
	www.satellite.bt.com /btgss/radiotowers/cop (752 words)

	Radio masts and towers - Wikipedia, the free encyclopedia (Site not responding. Last check: )
		Radio masts and towers are, typically, tall structures designed to support antennas (also known as aerials in the UK) for telecommunications and broadcasting, including television.
		In the case of a mast radiator or radiating tower, the whole mast or tower is itself the transmitting antenna.
		Two shorter towers may be a better option the one taller one, for example, or a higher tower might not be useful if the signal is blocked by terrain nor if all the listeners are in a concentrated area and a higher tower cannot pay for itself.
	en.wikipedia.org /wiki/Radio_mast (1672 words)

	List of masts - Wikipedia, the free encyclopedia
		While commonly used on sailing ships as support for sails, radio masts and towers are also used for telecommunication equipment such as radio antennas, also known as aerials in the UK.
		There is often crossover in term usage as some skyscraper use the tower term, some towers use the mast term, and ironically 'skyscraper' has some word heritage from references to high sailboat masts.
		Top masts are ranked by pinnacle height; in the case of a tie, the older structure is ranked as higher.
	www.wikipedia.org /wiki/TV_masts (298 words)

	Encyclopedia: Radio masts and towers (Site not responding. Last check: )
		The Warsaw radio mast in Konstantynów The Warsaw radio mast was the tallest structure ever built; however, it only existed from 1974 to 1991.
		The tower at Christmas The Gerbrandy Tower (Dutch: Gerbrandytoren) is a tower which was built in 1961 in the Netherlands.
		The Gliwice Radio Tower is the transmission tower of the Gliwice (Gleiwitz), Poland, radio station, situated at 50Â°19 N and 18Â°41 E in Tarnowitzer Road in Gliwice.
	www.nationmaster.com /encyclopedia/Radio-masts-and-towers (2999 words)

	Force 12 Low Profile Towers, Trailers, Masts-2
		Force 12 towers are strong, made of high quality, aluminum square tubing and delrin slides for smooth operation.
		Towers and masts made of round tubing also require a guide to help prevent rotation of the sections in winds.
		Tower is set up temporarily using an optional X-base and guyed at the first section.
	force12inc.com /F12-towerinfo-1.htm (599 words)

	Rat Man : Vol 5 : Section 860 : Radio and TV Transmitting/Receiving Stations and Masts (including Microwave Masts) ... (Site not responding. Last check: )
		A mast or tower used or intended to be used in connection with the transmission of communications signals may be either supplied by means of an incoming communication cable used to convey the electronic signal or by means of a radio link.
		Poles and posts are also expected to provide a similar function to masts and towers in the new breed of transmitting/receiving stations forming part of mobile communications networks although their role is currently primarily devoted to the provision of support to overhead communications cables.
		In the case of masts and towers connected by a radio link the electronic signal will generally be picked up by an aerial or dish on the mast and fed to the equipment contained either within a cabinet or equipment room at the base of the mast.
	www.voa.gov.uk /instructions/chapters/rating_manual/vol5/sect860/pn95.htm (1983 words)

	List_of_towers (Site not responding. Last check: )
		Tehran's Milad Tower is the world's fourth tallest free standing structure at 435 m.
		Towers are also built for a few other purposes as well, such as for air traffic control or as a monument.
		Except of the radio tower Jauerling, which uses a lattice tower as basement, the basement is made of reinforced concrete.
	www.usedaudiparts.com /search.php?title=List_of_towers (426 words)

	ACT Telecommunications Plan - Background and Technical Overview
		In other circumstances it may be appropriate to erect a larger mast or tower to either facilitate co-masting and thus prevent the proliferation of further towers, or increase the coverage and reduce the need for antennas in other locations.
		The power of analogue radio transmissions is continuous during the period of transmission and is therefore at a constant level during the transmission.
		This is unlike the towers used for commercial broadcast radio and TV where the mast itself forms the radiating element.
	www.tomw.net.au /ncpatw1.html (4641 words)

	Prometheus Radio Project! (Site not responding. Last check: )
		A mast is generally a single piece of pipe, while a tower is a set of interlocking pipes (typically in a triangular configuration) which can be much taller.
		So unless you plan to rent the tower space to others (which can be quite lucrative, but nay not be the business you thought you would find yourself in), you can use a fairly light duty ham radio tower.
		Towers that can support human weight up at the top are definitely a bit more complicated than your basic antenna pole.
	www.prometheusradio.org /hang_em_high.shtml (3497 words)

	Mobile/Cellular Technology - Wibe - Masts and Towers, Civil Works and Design and Calculations
		Towers up to 120m high and guyed masts up to 335m are all thoroughly tried and tested with a high degree of technical sophistication.
		With Wibe's background as an experienced manufacturer and installer of masts and towers, the move into contracting for complete turnkey green field sites was a natural one.
		This highly versatile mast system is capable of providing a quick and cost effective solutions to modern day communication requirements such as temporary cellular phone antenna mast sites, restoration of disaster area communications and temporary cellular phone capacity increase to accommodate athletic and political event requirements.
	www.mobilecomms-technology.com /contractors/turnkey/wibe (577 words)

	Articles - Transmitter (Site not responding. Last check: )
		In the early days of radio engineering, radio frequency energy was generated using arcs or mechanical alternators (of which a rare example survives at the SAQ transmitter in Grimeton, Sweden).
		Radio towers for UHF and TV transmitter can be implemented in principle as grounded constructions.
		Towers may be steel lattice masts or reinforced concrete towers with antennas mounted at the top.
	www.zgrey.com /articles/Transmitter (1676 words)

	Radio & TV Transmitter Masts and Towers in Malta 2
		This page presents the masts and towers that are used for radio and television broadcasting.
		This tower, near Naxxar (pronounced Nashar), is not far from the Gharghur tower and has a number of UHF aerial panels at the top and is the other main UHF television transmitting site carring NET-TV to much of Malta.
		This mast radiates the 999 kHz medium wave service of Radio Malta in parallel to their FM outlet on 93.7 MHz.
	uk.geocities.com /mds975/masts/malta02.html (303 words)

	Masts, Towers & Acc (Site not responding. Last check: )
		Webb Industries, Masts and Towers division undertakes the supply and installation of self-supporting tubular towers, guyed lattice masts and both parallel and tapered self-supporting lattice towers to the mast and tower industries.
		Masts and towers can be designed to suit individual customer requirements, from heights as low as 6 metres up to 120 metres, including load and geographical location.
		Installation of the masts and towers is carried out by accredited installation crews and complies with Webb Industries' site - build specifications, both SABS 1200G and H as well as individual customer requirements.
	www.webb.co.za /pages/masts.htm (169 words)

	tallest radio tower (Site not responding. Last check: )
		… broadcasting masts, followed by a mix of the taller tower-type structure (like the CN Tower) and the taller high rises … 608.38 m, Hoyt Radio Tower, Hoyt, Kansas.
		This 468 meters high (1 536 feet) tower is the world’s third tallest TV and radio tower surpassed in height only by towers.
		The tallest radio tower is the 650 ft (198 m) KOAZ-FM (97.5) tower in Marana near Tucson.
	www.aquabioenvirotech.com /tallest-radio-tower.html (393 words)

	TOWER FACTS AND INFORMATION (Site not responding. Last check: )
		for security against coming in or getting out: a watch tower at a prison, concentration_camp, fortress/castle, border/defensive_wall; in some of these cases also to fire from.
		Skyscrapers are sometimes not thought of as towers.
		A tower wagon is a mobile tower for construction work, firefighting, rescue work, window cleaning, filming.
	www.witwib.com /index.php?s=tower (276 words)

	Budgeting for Wireless Connectivity - Texas State Library
		Due to the way radio signals are transmitted and received, the clearance around the mid-point of the line between two sites must be larger than at the end points.
		Finally, where masts or radio towers are required, you may need extension cables to connect the antenna to the bridge.
		In this, and the succeeding diagrams, all devices used to raise the antenna are represented as towers.
	www.tsl.state.tx.us /ld/pubs/wireless/chapter3.html (4612 words)

	Radio & TV Transmitter Masts and Towers in Malta 1
		The radio station VOICE OF THE MEDITERRANEAN (VOM) was established in 1984 and was a joint venture between the governments of Malta and Libya to promote the Mediterranean culture, unity and peace in the region.
		These two towers had a T aerial strung between them, but we were on a coach trip at the time and did not get close enough to either get a positive fix or a photograph.
		Currently one of the towers is a cable head end and is used by Melitia Cable evidenced by the preponderance of UHF yagis pointed towards Italy.
	uk.geocities.com /mds975/masts/malta01.html (2980 words)

	Guy-wire (Site not responding. Last check: )
		A guy-wire or guy rope is a metal wire used to aid stability in tall structures (frequently radio masts).
		This is not the case for mast antennas, for masts with aerials for VLF, LF, MF and SW or for masts situated close to such aerials.
		So there are often guys used at some newer mast antennas which are fixed with insulators at the mast construction and grounded via coils, which are situated next to the anchor blocks at which the guys are fixed on insulators.
	www.worldhistory.com /wiki/G/Guy-wire.htm (621 words)

	Army Technology - GEROH - Mobile Antenna Masts and Towers (Site not responding. Last check: )
		The individual stages of the mast are made from aluminium and form a structure with a high load capacity whose design is adapted to the area of application.
		Due to the automatic locking devices of the aluminium tube stages the mast offer a high rated loadability in vertical direction the use of special square tubes ensures direction-finding radio accuracy even in case of increased requirements.
		Spindle driven masts: tubular masts with spindle drive are used whenever high requirements are placed on stability in high wind speeds.
	www.army-technology.com /contractors/antennas/geroh (482 words)

	WAVES: SCANNING
		The stately towers and masts now are encircled by a multitude of self-organising public wifi networks.
		The doors to the broadcast towers were not forced open by these pioneers but ignored, and the landmark symbols of one-to-many broadcasting was replaced by rambling a network of many-to-many net.casters...
		So theÂ tower - in italianÂ "campanile" becaurse of the neo-byzantinic style of the archtecture of the church - had been the first antenna-tower or "radio-tower" and transmission station in germany in 1897.
	www.rixc.lv /waves/rtx/en.html (1832 words)

	Radio Towers Manufactured to High Specifications
		A full range of radio towers accessories is available for all our structures.
		These types of radio towers attracts less wind loading than the equivalent angle towers, hence the profile is slimmer and the base forces are less, saving money in the foundation.
		This radio tower has circular platforms and equipment supports for aesthetic enchancement and flexibility in terms of equipment mounting.
	www.fli.co.uk /radio_towers.html (274 words)

	Transmitters Masts and Broadcast Towers, Mobile Phone Masts
		The section of towers and masts from outside the UK is currently being worked on and will be gradually added to over the coming months.
		We have lived with radio from man-made radio waves for about one hundred years (and with naturally occurring radio waves since the dawn of time) and as far as I am aware, in normal use, there is no proof that radio waves are damaging to health.
		On the face of it, it seems that these campaigners are deliberately confusing benign radio wave emissions with harmful ionising gamma radiation, which is entirely different, and a bogus claim designed to unnecessarily scare the public into surrendering to their protests.
	dspace.dial.pipex.com /town/pipexdsl/r/arar93/mds975/masts/mastphotos1.html (896 words)

	BBC - Shropshire - History - Radio masts' crucial role in war
		For 60 years the radio masts at Criggion were a part of the scenery of the Shropshire/Wales border.
		In March 2003 it was closed down, and it was announced that the three 700 foot masts, along with three free-standing towers 600 feet high, were to be brought down in August.
		The GPO Telecommunications Centre with its tall masts and wires was built in 1942, as a direct result of the war.
	www.bbc.co.uk /shropshire/history/2003/07/radio_masts.shtml (1251 words)

	Wireless ISP 101 (Site not responding. Last check: )
		Rural Wireless-ISP installations are typically not commercial in nature and are instead a patchwork of systems built up by hobbyists mounting antennas on radio masts and towers, agricultural storage silos, very tall trees, or whatever other tall objects are available.
		T-1/DS-1 is a type of service which is possible for a rural customer desiring broadband speeds, but the cost can be in the hundreds or thousands of dollars per month depending on the distance from the provider.
		This is as if you had to pay the water utility to rent the water main in the ground, in addition to paying to get water delivered through the main from the tower.
	www.juiceenewsdaily.com /1004/news/wireisp.html?1130384811109 (393 words)

	Zoning Ordinace of Fayetteville, TN -- Chapter 7 (Site not responding. Last check: )
		A noncomplying building which is damaged or destroyed may be reconstructed, provided that the reconstruction will not either create a new noncompliance or increase the degree of noncompliance of a building or structure or parcel or portion thereof.
		The height limitations of this ordinance shall not apply to church spires, belfries, cupolas and domes not intended for human occupancy; monuments, water towers, transmission towers; chimneys, smokestacks, conveyors, flag poles, public and semi-public radio towers, amateur radio towers, masts and aerials.
		Height exceptions for radio towers in residential zoning districts shall be allowed only when approved by the Planning Commission.
	www.fayettevilletn.com /fayetteville.zoning.07.html (1210 words)

	Tower (Site not responding. Last check: )
		for mounting thyristors in a HVDC (thyristor tower)
		In the USA the now-destroyed New York World Trade Center had the nickname the Twin Towers, a name shared with the Petronas Twin Towers in Kuala Lumpur.
		A railroad tower allowed railroad employees to view the tracks and switches near the tower; it now refers to any location housing interlocking equipment.
	www.usedaudiparts.com /search.php?title=Tower (358 words)

	Open Directory - Business: Telecommunications: Equipment: Towers: Manufacturers (Site not responding. Last check: )
		Heights Tower Systems, Inc. - Source for self-supporting aluminum towers, stacked towers and crank-up style towers for radio antenna and other applications including lighting and staging.
		Radio Structures UK - Manufacturer and supplier of tower and mast structures including mobile masts and towsers for trailers.
		RADIUS Technologies LTD - Manufactures steel towers, pylons and masts for the radio communications industry, CCTV towers for the security industry and measurement towers for the meteorological sector.
	dmoz.org /Business/Telecommunications/Equipment/Towers/Manufacturers (647 words)

	Giovannini Elettromeccanica - Military and Commercial antenna systems for HF
		HF antenna systems, antennas for 1.8 to 30 MHz, we have hf antenna for military body, log-periodic HF antennas, broad-band HF antennas, wires antenna with fiberglass mast and tactical mast, Our military antenna system fit for tactical and movable use, like fiberglass mast, tactical tower, guyed tower and mast, hf broad band antenna.
		Giovannini cubical quad antenna are fit for ham radio DX on 80, 160 and 40 meters bands.
		The t2fd or T2FD hf antenna for broad-band use in HF frequency like dipole or inverted V. The bolted triangular sections tower are fit for all hf antenna like logperiodic or rotatable antennas.
	www.antenna.it (360 words)

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