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Topic: Mast radiator

	Radio masts and towers - Wikipedia, the free encyclopedia
		Masts of the Rugby VLF transmitter in England
		In the case of a mast radiator or radiating tower, the whole mast or tower is itself the transmitting antenna.
		A mast radiator is a radio tower or mast in which the whole structure works as an antenna.
	en.wikipedia.org /wiki/Radio_mast (1529 words)

	United States Patent Application: 0040032372 (Site not responding. Last check: 2007-09-09)
		Distal ends of the radiators are secured at distal ends of the outer tubes by attachment to eyelets on the bottoms of plugs inserted into the distal ends of the outer tubes, which serve additionally to prevent water from entering the tubes.
		Distal ends of the radiators are secured at distal ends of the outer tubes by attachment to eyelets on the bottom of plugs inserted into the distal ends of the outer tubes, with the plugs serving additionally to prevent water from entering the tubes.
		The conductive elements of the first and second radiator apparatus are joined electrically together at a proximal end of the antenna assembly 10, and are also connected to a lead-in wire of a cable 34 at a point 36.
	appft1.uspto.gov /netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1="20040032372".PGNR.&OS=DN/20040032372&RS=DN/20040032372 (4672 words)

	Omnidirectional communications antenna - Patent 4155092
		It is necessary that the radiating conductor or antenna used for receiving a signal is polarized in the same plane as the plane in which the transmitting antenna propagates its signal.
		The antenna radiating elements lie in a common, generally horizontal plane, are circumferentially spaced one from the other, and are spaced outwardly and at a distance from a central support or hub structure and from supporting means which are secured to the central hub structure and which extend outwardly therefrom.
		The radial extent of the stretcher arms 40 are substantially equal to those of the balun arms so that in plan view the radiator elements 12 resemble bent dipoles, each of which comprises a pair of integral quarter wave length segments which are at an angle of about 120.degree.
	www.freepatentsonline.com /4155092.html (6135 words)

	[No title] (Site not responding. Last check: 2007-09-09)
		Generally, a boom and mast are used to mount a logarithmic yagi antenna system to a structure, such as a building.
		The antenna system of claim 12 wherein said radiating element means comprises a log periodic dipole array having at least two dipole elements of different lengths, said dipole array having a forwardmost dipole element and a rearwardmost dipole element.
		The radiating element means comprises a log periodic dipole array having at least two dipole elements of different lengths.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=98/49749.981105&ELEMENT_SET=DECL (4611 words)

	7 Jan 99 AE404 Senior Design class meets for the first time this semester
		Mast Support The fitting was cooled for about one hour in the freezer while the bearing was heated to 350F.
		A slippage mark was applied to nut #0470 at the bottom of the mast assembly per figure 6 (section 5, page 2), nut #0470 at the teeter block yoke assembly per figure 7 (section 5, page 2)and nylock nuts #0456 at the upper control block assembly per figure 8 (section 5, page 3).
		A mock-up of the 4 mast support barrel arms using plastic tube instead of steel tube and all the actual "extended nuts" made of halves of steel turnbuckle barrels was completed and installed.
	www.well.com /user/amnfn/mini500.html (16297 words)

	JJ6 Antenna (2) (F6ITV) (G4ZU)
		A CPVC pipe, 1m long and 20mm diameter, extends each half radiator by means of a CPVC straight coupling sleeve of 20mm inner diameter and tightened on the radiator by a hose clamp.
		Nylon wires of about 1 to1.5 mm diameter, are connected to the radiator by means of plastic clamps and then tied up to the end loops of the related reflector or director.
		The 450 twin-lead connection to the radiator is done by means of terminals, bolts and nuts.
	perso.wanadoo.fr /f6itv/p2015001.htm (1143 words)

	Spitfire Mk V AA.878 Report
		An aerial mast was fitted behind the pilot's hood, with an aerial between the mast and the tailplane.
		The maximum level speed of the aeroplane at combat rating with radiator shutter in minimum drag position was measured between 8,000 ft. and 20,000 ft. The oil and coolant temperatures were noted at the end of the three minutes at full throttle.
		In level flight at the end of a 3 minute period at combat rating with the radiator shutter in minimum drag position the oil temperature is within requirements when corrected to temperate or tropical summer conditions, whilst the radiator suitability is within requirements for temperate but not for tropical summer conditions.
	www.fourthfightergroup.com /eagles/aa878.html (1576 words)

	A Portable, Multiband Vertical Using the DK9SQ Mast
		The radiator hangs down the side of the mast, and attaches to a loose tie wrap ring at the base.
		All sixteen of the short radials attach to a loose ring made from #14 stranded wire.
		Both a short pigtail from the radial ring, and end of the radiator, are attached to a 2-conductor jack that I bought from Radio Shack years ago.
	www.arsqrp.com /ars/pages/back_issues/2000_text/0600_text/dk_vert.html (1258 words)

	[No title]
		Radio frequency microwaves cannot penetrate steel and when an antenna is placed on steel, the energy that radiates towards the ground is reflected by the steel to the air.
		There is signal loss between the antenna and the coupling box on the inside of the glass hence this type of antenna configuration will have inferior performance when compared to the same antenna with same antenna cable that is connected directly to the co-ax cable.
		It is important to understand that an antenna's gain number and type of antenna mast (radiator) is less significant than how it is connected and where it is placed.
	www.smoothtalker.com /faq/cellular_antennas/ch08.php (378 words)

	[No title]
		Hence, the angle radiators are arranged and shaped for a relatively loose coupling to the mast with its guy ropes.
		Their influence on the radiation characteristics is highly critical if any non-insulated section of the guy-rope system has an electrical length which is exactly or approximately equal to a quarter-wave length.
		In this context the azimuth distance of the angle radiators between the guy-ropes and the radial distance from the supporting mast are of utmost importance.
	www.itu.int /itudoc/itu-r/archives/rsg/lcce/rsg10/035s_ww7.doc (1570 words)

	[No title] (Site not responding. Last check: 2007-09-09)
		Each of these is fitted with a 3/8-24 threaded stud with a nut inside and a 3/8-24 female coupling for the mast and radiator outside.
		Taps are taken from the exterior of the coil to the switch positions which have been brought through the switch tube to permit all tap wiring to be made from the outside without disassembly.
		The mast is mounted on a 1/4" inch steel bracket which is bolted to the vehicle frame.
	www.bridgeport.edu /~msedutto/ant2.html (814 words)

	Home Brew Collinear
		As a vertical radiator, the 5/8 wavelength antenna tends to compress its radiation toward the horizon, which is where you want it when you are working 2M.
		By comparison, a 1/4 wavelength vertical radiator squirts too much RF energy at a high angle - not too useful unless you are trying to work aeronautical mobile stations.
		And this type of radiator, it turned out, was not a complete stranger to me. In a horizontally polarized form, I had successfully used it in the 1960's as the driven elements in the W6GD "Extended-Expanded Collinear" array.
	www.antennex.com /preview/colliner.htm (669 words)

	Description of Antenna Mast Assembly AB-86/GRA-4 (Site not responding. Last check: 2007-09-09)
		Mast Section AB-85/GRA-4 is a 3-foot aluminum tube.
		ground system when the mast is used as a 40-foot or 55-foot vertical radiator.
		Mast Base AB-154/U (swivel stake) consists of an aluminum stake with a pivoting clevis at one end.
	www.tpub.com /content/antennaandmasts/TM-11-2651/css/TM-11-2651_35.htm (359 words)

	A comparison of 10 meter verticals using modeling
		The 5/8 radiator with one 5/8 radial at an approximate 25 degree angle.
		The deviation of the pattern from omnidirectional is more obvious than two radials but the overall gain in most directions is good.
		If you had room to put the radiator up on a mast, but had room for only one radial, this could be a good performing answer.
	web.wt.net /~nm5k/10du3.htm (327 words)

	CHEAP AND EASY: The Mountain Topper II
		Radials are attached to the antenna using alligator clips.
		On 40 and 30 it is definitely a compromise antenna because it is short and because the radials are not as elevated in relation to the wavelength.
		The idea is that all parts of the antenna (base, mast, coil and stinger) have an 11/32” top and a 5/16” bottom and can all be simply pushed together when it is time to build the antenna.
	www.arsqrp.com /ars/pages/back_issues/2003_text/1003_text/N0SXX.html (2667 words)

	mb21 - The Transmission Gallery (Site not responding. Last check: 2007-09-09)
		It radiated the London Regional Programme and the National Programme with powers of 30 kW and 45 kW respectively.
		This was radiated from a 500ft mast-radiator, which improved the range of the transmissions.
		The Regional transmitter, with an increased power of 50kW, was used for the Light Programme transmissions from the aerial and mast reflector on the south side of the transmitter building.
	tx.mb21.co.uk /gallery/brookmanspark/bbc-eis1001.asp (488 words)

	Copper Pipe Jpole
		A half wave radiator fed at one end presents a very high feedpoint impedance, at least several thousand ohms.
		After the beads of solder are somewhat cooled, grasp the coax with a pair of pliers and while heating the pipe, (again from the bottom) wait till the solder bead begins to liquify and apply the tinned shield portion of the coax to the 3/4 wave element.
		Again, after the shield side has cooled, bend the center conductor over to the 1/4 wave radial and cut the center conductor insulation to allow the center conductor to be soldered to the antenna.
	www.chem.hawaii.edu /uham/jpole.html (970 words)

	Bob Simpleton's Guide to Quickie Antennas
		If you are only renting the home, you may be tempted to strap the mast on the side of the house and limit the height to just over roof level.
		I drilled the holes, built the antenna and mast and bolted it to the side of the house.
		I remembered that a 220 MHz quarter wave antenna could be made using a 12 1/2" wire for a radiator and a 13" wire for the ground plane.
	www.artscipub.com /simpleton/simp.quickie.html (657 words)

	Vehicle Dynamics - Radiator Testing (Site not responding. Last check: 2007-09-09)
		Radiators can also be tested on the MAST system with or without the engine.
		MAST systems, designed for simulation testing, offer up to six degrees of freedom: vertical, lateral, longitudinal, pitch, roll and yaw.
		A key to MAST system flexibility is the aluminum table on which test specimens are mounted.
	www.mts.com /menusystem.asp?DataSource=0&NodeID=1209 (199 words)

	Radio & TV Transmitter Masts and Towers in Malta 1
		DW built some af the largest masts on the island, the shortwave aerial consisted of curtain antennas supported by three 300 ft structures.
		There were also anumber of MF mast radiators and vertical and horizontal log-periodic antennas.
		There are several other sites around the island that sport a multitude of masts and towers that give the appearance of shortwave or transmission sites of some kind, at least one of which (Siggiewi) looks completely disused and this turned out to be an ex-Navy receiving station.
	uk.geocities.com /mds975/masts/malta01.html (3210 words)

	Determining Length of Antenna (Site not responding. Last check: 2007-09-09)
		When the mast is upright and the slack set of guys has become taut, the second man assists the first in securing
		If the mast assembly is to be used as a vertical radiator (fig.
		the base of the mast assembly and attach the four radials to the stakes.
	www.tpub.com /content/antennaandmasts/TM-11-2651/css/TM-11-2651_52.htm (283 words)

	[FPSPACE] P6 Development Events List
		This assembly is used to deploy and retract the solar array assembly on the solar power module.
		The components are dual fluid passageway valves featuring four internal ball valves which prevent ammonia leakage when the passive and active halves are separated during maintenance of the PFCS or PV radiator.
		The test demonstrated the capability of the BGDTS passive spring and damper mechanism to control the speed and path through which the solar array and beta gimbal assembly travels during deployment.
	www.friends-partners.org /pipermail/fpspace/2000-December/001015.html (1046 words)

	[No title]
		If the mast has failed in the UP position, and the mast or entire assembly is being replaced, the mast may be cut off to facilitate removal.
		Be sure the mast is in the fully retracted position before installation.
		If necessary, the wiring may be temporarily connected in order to retract the mast.
	www.autozone.com /servlet/UiBroker?ForwardPage=/az/cds/en_us/0900823d/80/11/e0/3f/0900823d8011e03f.jsp (378 words)

	Stereo Equipment
		Exact reproduction of the telescopic mast antenna used in original AM radio equipped trucks.
		Exact reproduction of the fixed mast antenna used in original AM/FM radio equipped trucks.
		Exact reproduction of the telescopic mast antenna used in original AM/FM radio equipped trucks.
	www.gmcpauls.com /stereo_equipment1.htm (416 words)

	MicroDipole
		An RF ground is not necessary with this antenna, but it is good practice to install the best ground system possible for lightning protection and RFI reduction.
		A standard 1 1/4" TV mast may be used, but the end will have to be flattened slightly using a vise or hammer.
		There is no reason for building an antenna that produces a wide operating bandwidth and yet is a poor radiator.
	www.radioworks.com /MicroDipole/MicroDipole.html (1240 words)

	Sommer T-25 Terminated Frequency-Independent Vertical - Working Principles
		Mounted parallel to the radiator is a Teflon® insulated copper wire.
		The radiator can be dismantled and removed from the mast base in a matter of minutes.
		The 7.5 m / 25 ft radiator is far from full-size on the 75/80 and 160 m bands.
	www.sommerantennas.com /25work.html (739 words)

	A comparison of 10 meter verticals using modeling
		The 5/8 radiator with two 5/8 radials at an approximate 25 degree angle.
		In the 90 degree plot broadside to the radials, the gain in those two directions is 5.798 dbi.
		This would be an easy way to mount if say you had a pushup mast next to a house to support the antenna, and only had room to let the radials slope down along the sides of the mast, parallel to the house.
	web.wt.net /~nm5k/10du2.htm (190 words)

	OBAN RADIO/GNE - maritime communications station for the west coast of Scotland (Site not responding. Last check: 2007-09-09)
		When the local community got wind of the proposals, and realised that the tall masts were to be in the middle of the airfield - effectivly closing the field - there was an outcry.
		The tall transmitter masts were erected in fields outside the station building with receiver masts in another field in the moss adjacent to the Fort William road.
		One Ajax transmitter had a dedicated mast radiator as had the H1000, both beig provided with a tuning unit at the base of the antenna.
	www.qsl.net /gm3zdh/coast/uk/gne (731 words)

	Legislazione (Linee Guida e Standard) - Situazione Europea - Draft proposal for a council recommandation 11 giugno 1998 (Site not responding. Last check: 2007-09-09)
		Concerning exposure of the general public to visible radiation (light), the most important with respect to potential for causing eye injury is laser radiation such as used for display and entertainment purposes.
		The European Parliament adopted in 1994 a resolution on combating the harmful effects of non-ionizing radiation (OJ No C 205, 25.7.94) and called on the Commission to propose regulations and standards seeking to limit the exposure of workers and the public to non-ionizing electromagnetic radiation.
		All radiation with exception of the visible part of the electromagnetic spectrum shall be reduced to negligible levels from the point of view of the protection of workers’ safety and health.
	www.ispesl.it /gauss/Legislazione/Decreti/Direttiva.CE.98.htm (7177 words)

	Acura Auto - Professional Mechanics OnLine
		Check that the antenna mast retracts and extends fully when the radio is turned on and off repeatedly.
		Answer: With a new radiator, there is a good chance your car will run cooler, especially if the old radiator was plugged.
		Regarding the fl gook in the radiator, he said that was mold.
	www.2carpros.com /makes/acura2.htm (1564 words)

	N73GK Gyro Log P-7
		Connected radiator hose from top of radiator to filler spout using rubber standoffs.
		This will move the box away from the mast enough so that the control rods will clear.
		Cut out a piece of fiberglass to put toward the muffler side of ECU box to provide some insulation from possible heat radiation.
	home.att.net /~gary_air2/gyro_log_7.htm (660 words)

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