Field antenna mast

The radars in the Integrated Mast are non-rotating, four-faced active phased array radars, which in itself is a major performance enhancement. Was: $149. This "3-Band Field Vertical" is a low-cost adaptation of a commercially available tri band kit but in a more rugged, field deployable configuration. SMC are globally recognised as a leading antenna and mast manufacturer with stringent QA procedures and state-of-the-art machinery. Antenna Masts Filed in Antennas on Jul. The mast consists of aluminium or fibreglass poles and guy wires which prevent movement of the mast under antenna, wind and ice loading. These heavy-duty steel masts can withstand different weather conditions while continuing to support your antenna and dish for the best signal. Telescopic, field tunable VHF antenna. The unit has several mounting options and comes as standard with a 600mm ground stake which is hammered into the ground providing a locking cylinder for the mast antenna mounts and parts - mounts and parts associated with antennas and antenna sets field telephone and wire. A vehicle's antenna mast is mounted to the exterior of the car or truck and can be solid, expanding, or electrically-powered to extend whenever the radio is turned on. Antenna Mast Accessories. Since antennas are used to communicate wirelessly from long distances Antenna Masts are an integral part of EMC and RF measurement systems. Laying 50 miles of copper wire which is an unseen factor in the efficiency of the new KDKA antenna; it is buried about a foot deep, to form a ground. Shown here in kit form. Available in manual or automatic, using either pneumatic and or electric driven, the antenna mast design has the capacity to carry antennas of 6kg (MM) and 10kgs (MA) as standard. AmerTac manufacturing brands offer complete lines of distinctive decorative home Expedition Series Field Masts. Okay, here is the base that is starting to take place. We have heavy-duty tripods and tripod/mast combos that can handle up to 100 pounds. The ~67 ft. The modular design makes it possible to use different telescope parts and it can be mounted on a mast foot made of stainless steel or one made out of low-reflective fiberglass. $159. 10. Made in the USA! Used for Off-Air TV Antenna, Amateur (Ham) Radio, Wireless Internet Antenna, MMDS and Cell Phone Signal Booster, Emergency Dispatch and Public Utilities Installations. The mast section is a rugged square fiberglass tube provides excellent stability. The masts are light weight and short enough, when fully collapsed, to The AM-400 antenna is strong and low maintenance - suitable for making EMC radiated emissions measurements in an open area test site. Quick Erecting Antenna Mast (QEAM) Will-Burt’s Quick Erecting Antenna Mast (QEAM) is a series of reliable screw-drive or strap-drive guyed field masts made of high-strength 6061-T6 aluminum tubes. Any orders placed now will be held until stock is available. It has the following features  EMC32 with Angle Offset for the second Antenna Mast. Antenna calibration is performed by measuring the scattering parameters between the  transimpedance amplifier as referenced to 1 S. An antenna mast is a slim metal rod, occasionally wrapped in plastic, which boosts a car or truck's radio reception by holding your vehicle's antenna. Here’s the completed antenna mast support. E-field signals are more tolerent. Some manufacturers make special TV antennas for attic installations. 11 квіт. I didn't think to put the antenna very high, didn't see the point, I'm aleady increasing the height location by moving it from the chimney to the hill. All antennas rotate around their own axis during polarisation to eliminate any elevation errors. This vehicle antenna delivers high  The design of this Field Day Antenna is an above ground mounted ground plane vertical. The Aluminum Light Mast (ALM) was specifically designed for the Ham and competitive Ham operators. The center (on a mast) is sited near the operating tent (white square). 5-Stage Fiberglass Push Up Equipment Mast - Extends from 5. Overview. ROHN 9H50 34' Telescoping Mast - Antenna Push Up Pole - Ships 18 m antenna mast . 00. miscellaneous. Contact!, an ISO 9001:2015 certified company, is a systems integrator and the North American distributor of telescoping antenna The double telescopic antenna mast / tripod is continuously height-adjustable. Yagi is an antenna that radiates in only one direction. 44-RMCFR3. Rugged, stable construction excellent for indoor & outdoor use. to support an antenna, then we recommend using 3 guy levels to keep the mast straight and stiff. The HDTM 10C and the TM 15C are made from carbon composite tubes. Note This lightweight mast system is not approved to MIL STD 810F. Swaged Ground Pole Dish Mast Ideal, as a DISH500 and DIRECTV Dish Antenna Mast and your HDTV  An overview of how MAST Technologies' RF absorber, radar absorber, microwave absorber, and EMI shielding materials are utilized in wireless antennas. While an antenna mast may come like an excellent addition to your country house and connectivity, you may find a few things about it underwhelming: Antenna masts can take a lot of property space (even more if it is a tilt-over mast) The installation can easily take days or even weeks; It can be costly at first The MA4000-XP-ET antenna mast has Boresight functionality and is suitable for use in either open areas or in electromagnetic absorption chambers. Heights from 8 to 34 meters. $119. It's maximum antenna load is 22-pounds. Designed for manual operation, QEAM elevates light payloads for ground- 5ft Antenna Mast 1. All radars and antennas not only have a full 360° field of view; they are also developed so as to operate simultaneously without interfering each other. Find yours below! The mast feels different in your hands as it approaches the tipping point. Radiating Near Field or Fresnel Region. As a ham who enjoys portable operation, a mast or other sup-port structure is necessary for the suc-cessful deployment of a wire antenna when in the field, especially if operating in an area void of trees and other sup-ports. Reply. • Page 7 - Mast Options. Telescopic mast from 7m to 21m for ham amateur radio antennas, telecommunication towers, CCTV equipment, field lighting, traffic monitoring, sound systems. 2 inches) Tube colour: Light grey. I also would like to get in HD Radio and decent fm stations. Don. Ideal for antenna masts. 5m (41ft) transport. Availability: In Stock. family of portable/manpack military antenna masts. Each of the following is issued with each AB-155*/U listed by FSN, Quantity Required, Quantity Issued and Item. Floatograph is a veteran-owned business that has been providing high-quality products to Portable antenna mast system using 1-inch diameter PVC conduit and couplings, housed in an old military ammo box, which acts as a stand for the antenna. The big brother of the AB-577, this is a 6 " diameter, 50 foot mast with significantly increased antenna load capacity. Ideally suited for portable and fixed applications, such as hand-held instrumentation, bench testing, and fixed wireless monitoring equipment. ) Figure 4 shows normalized power density for three SENSORS OF I-MAST. 1) Unscrew antenna mast to remove. Every detail is designed for reliability and quick and safe operation. COPPER PLATED STEEL, OVERALL ABOUT 23 INCHES LONG, WHEN SCREWED IN SLIGHTLY OVER 20 INCHES. family sectionalized tubular military antenna masts (5 - 12 m) ST-R. However, they require a mast for the antenna to be erected in the air. Made in the USA! 3 section 16 gauge inner, 18 gauge outers, Mast collapses down to 95" inches in length that with overlapping, extended mast length is 21 1/2' Ft. UNUSED Surplus 4' Smooth Walled Aluminum Antenna Tower Mast Sections - Lot of 4. Their antennas tend to be mounted at sufficient height to give them a clear view over the surrounding geographical area. All radars and antennas in an I-Mast not only have a full 360° field of view; they are also developed so as to operate simultaneously without interfering each other. It extends to 14-foot, 8-inches and collapses to 54-inches. So I now have two 8′ foot antenna masts. I recently wrote a blog on the types These are fine for 90% of aerial installations in my area. VAT . 2 lbs - no The antenna consists of the wires and transformers used for communication. Mast Sections. Feedcone Assembly, NSN 5985-01-074-6684. $210. ) from the platform. 0,4 m above ground level). The bottom section is a guyed mast, which is guyed with four 1/4 wave  27 серп. And, to protect the guy line from the sharp metal edge of the guy ring attachment holes, we offer 3/16 inch diameter quick-links, rated for 660 lbs, for attaching your guy line, at $1. / 9 m Sold out Universal Roof/Attic Mount Apparatus for installing an antenna mast on a roof or in an attic, up to 1. • Nally free-standing, guyed and tilt-over masts to 10. Amateur Radio - K3RLL ANTENNAS. 95. Telescopic Antenna Masts . Holes were drilled into the side of the pipe so the bolts can secure the mast to eliminate wobble. or Best Offer. Other requests for the document will be referred to Commander, U. net Vine Antenna RST-HAMPOLE-12M | 12m Portable Mast | LAMCO Barnsley £ 99. $250. 7-Stage Fiberglass Push Up Equipment Mast - Extends from 12 to 60 Feet. EZ TM-30-U-95 Telescopic Antenna Push Up TV & Wireless Internet Antenna Mast - UPS Shippable. (The complex radiation field equations have imaginary terms indicating reactive power. UV stabilized. We stock more Manual Antennas and Power Antennas than anyone in the WORLD who services antennas. I would like to use two antennas for my EMI Changing virtual COM port to use field probe with EMC32. 0 stars based on 1 reviews. New Antenna to Multiply Field. It has 16 gauge walls with OD of 1. 14. 5" in diameter, to any wall. 75. FOUR REQUIRED FOR RC-292. Disadvantages of a 40′ Antenna Mast. Maturo CAM 4. 6 Foot Mast Kit for field day antenna. What is the best kind of antenna to get, where can I get it, how high should I mount it, what is the best way to It was concluded that the total electric field strength in the vicinity of base station antenna masts in no case exceeded 10 V m−1, which is quite below  Camouflage Camo Support System Antenna Mast Poles / wheels, Kits for Field Camouflage,Incredible shopping paradise,Fashion merchandise,outstanding service  radiation generated by base stations, extensive electromagnetic field strength measurements in the vicinity of GSM/UMTS base station antenna masts. EXL Series. A mast is generally a single piece of pipe, while a tower is a set of interlocking pipes The Antenna Farm : Field Tunable Whips - VHF & UHF Mobile Radios Radio Accessories VHF & UHF Hand Held Radios Antennas Mobile Antenna Mounts SWR/Power Meters Adapters Coaxial Cable Two Way Accessories Antenna Accessories DC Power Supplies Coax Cable Accessories Amplifiers Connectors Aviation Radios Repeater Systems Towers & Accessories Scanners & Receivers Duplexers Diplexers & Triplexers VHF At the top of a mast is very fine, but it may also be a piece down the mast - If metal mast, do a space of 10-15 cm from antenna to mast. The Flexible Antenna Mast is designed to work with standard SATCOM antennas for quick-access and use while on the move. 7 трав. com Winegard 37-in Mast Antenna Mount in the Excellent Field-day mast for portable Spiderbeam Yagi. 25 inches that ships UPS Ground to Commercial and Residential addresses alike, Used for Mounting Off-Air TV, Ham Radio, MMDS and Wireless Internet Antennas (not included) and fits in most elevators for ease of Installation 1-16 of 460 results for "ham radio antenna mast" Easy Up 33' 2" Telescoping Mast - TV WIFI HAM Antenna - EZ TM-50-U-95. Masts are usually metal, but under unusual circumstances they might be made of wood or other substances. Yagi antennas are most commonly used in point-to-point communications. Various horizontal and vertical radiation patterns can be achieved with different alignments of the FM antenna panels on the antenna mast. 3999. However, in the pursuit of eliminating unnecessary expenses, many people are now opting to cancel cable and satellite subscriptions, choosing to revert back to b I have a standard vhf/uhf/fm antenna on my roof. Simply hook up the preamp with the trap to the input of a field-strength meter, or to the TV antenna terminals of an FM radio if the trap is designed to attenuate FM signals. The next example deals with a radio base station antenna system mounted on a roof top at  The ultimate cable design for field deployable applications is the QEAM (Quick Erecting. Three feet of the top mast will be inserted into the bottom 2". 5920-497-8634 1 1 Carrying Device MX-387/GRA4: SC-D-28057. These antennas often use designs where one part of the antenna is active for one A multiband antenna is an antenna designed to operate on several bands. Used. Quick Erecting Antenna Mast (QEAM) Family of portable guyed field mast. Antennas, Masts, Positioners & E-Field Probes. 1 monitor cable from the near field monitor antenna to the NORMARC 7000 cabinet. No one walks around that area, its my property. A lightweight push-up field mast that can be deployed in less than one minute. Supplied with fifty feet of RG-174/U cable. A HF broadband dipole antenna can also be installed by using two similar masts. Buy Nagoya GPK-01 (21" Radials) NMO Mount Ground Plane Kit for Base or Field Use, SO-239 Connector, Mounts to 2" Pole, Mast, Pipe: Antennas - Amazon. 12. Cobham enables rapid communication deployment in the field. for use as a field deployable temporary HF, VHF, & UHF antenna mast. Mast sections hollow to the top. Accelonix offers a range of masts and positioners to help you do this. MAST, ANTENNA, 30-METER AB-1 340/G (NSN 5985-01-249-2581) (EIC: HHB) MSE Distribution authorized to U. distance directly below a 9 dB stick antenna. Designed for manual operation, QEAM elevates light payloads for groundmounted, vehicle and shelter deployment. This Hilomast WTM/3 mast is intended for smaller antennas where the maximum height is of prime importance. Great for vertical antennas, Wi-Fi antenna support masts, Field Day dipole supports, VHF/UHF vertical/yagi antenna mast, DXpedition tri-bander support masts, etc. 4" Wall Mount Apparatus for mounting a mast to a wall $14. e. Flexible support mast for impact resistance. Rohn Telescoping Masts has a rating of 5. 00. . This sturdy J-pipe style antenna mount can be assembled quickly and installed on nearly any part of a building. Far Field or Fraunhofer Region. The Hurry-Up is ideal for deploying antennas and sensors in a highly mobile operating environment. Access Points usually have one o hi i made an antenna for my hand held scanner but i don't know how o wire it do i just run one stright wire from the antenna to the scanner?? hi i made an antenna for my hand held scanner but i don't know how o wire it do i just run one st A multiband antenna is an antenna designed to operate on several bands. The yellow and black iron ring is 17 inches in diameter and 3/8-inch thick steel. In this video I demonstrate using a couple military pole sets to put up an antenna structure in the middle of a field with 1 person. The tilted telescopic mast is laying onto a ladder and the operator is fixing his antennas. Extended 18m mast for portable & HD Spiderbeam Yagi. Our range of antenna tuners deliver high Currently my antenna arsenal includes a dipole supported by the AB-155, a wire inverted L vertical supported by fiberglass mast, and an NVIS dipole also supported by fiberglass mast. In the meantime, the doublet, as constructed, remains a viable field-portable antenna. The PL-259 UHF connector is friction held by the hose clamp, and the adapter is fixed by Video: Easy Steps to Deploying an End-Fed Antenna in the Field Posted by Wayne KE8JFW on February 17, 2020 at 1:35 pm SOTABeams’ Richard, G3CWI, demonstrates how to set up an end-fed antenna in the field using a SOTABeams Carbon 6 Compact Ultra-Light Telescopic Mast and Bandspringer Midi HF Portable Antenna . 3 m Payload: up to 40 lbs. Fabricated from plastic (PVC and reinforced fibreglass) Metal parts are located only in the base plate. It’s a local purchase item from home supply stores and comes in 10′ lengths. 5 to 25 Feet - 24" Aluminum T-Head. All of our antennas are designed and manufactured in the UK A mast or tower is simply the thing that holds the antenna up off the ground. One leg then goes to NE, tied to a tree. Hurry-Up Telescoping Masts. 3-leg mass foot. AI6 ZU; AI6TK Alaris Antennas manufactures a range of telescopic and sectional masts, for use in applications where antenna elevation is required View Details. Our premier product - Military surplus 4ft stackable aluminum tubing. Telescopic radiator. See here for details of the mast at my current house. Currently deployed on US and NATO radio systems throughout the world, Shakespeare® HF antennas provide the reliable communications you demand in the field. 32′ Maximum Height Fiberglass Masts. Used for Mounting Off-Air TV, Ham Radio, MMDS and Wireless Internet Antennas (not included). My digital TV reception stinks to put it mildly. My experience is that they hold up well the ends of a wire antenna. 2. $717. S. This mast is ideal for fast deployment of light-weight antennas and instruments. The PVC sections store inside the ammo box for transportation. The ALM can be used as a temporary tower which may allow OTHER ANTENNAS: Besides the photo below of a typical APRS Field Day set up and using the trailer to observe the 2004 transit of Venus (without the mast), you can see some of my other antenna projects, this one for AO-40 was also a fun hardware project: See the portable Dish design page. Als I live in a bottom, surrounded by hills and trees, in a fringe reception area. 3 Star Inc has the 6 Foot 18 AWG Galvanized Steel 1. Codan also provides a range of fixed masts and dipole antennas that support base station communications over short and long distances. A critical area is a specific ground area near a radiating localizer or glide slope antenna array, which must be protected from aircraft and  Then the antenna must be integrated into the car easily. $ 65,00. Adding 80 metres to a 40 metre dipole. A field mast system with integral field legs, lighweight and portable, based on the popular QT Series of masts but supplied in miltary paint finishes with matching anodised mast sections with kit bags. The AE1000MAST is a lightweight 6 meter telescopic field antenna fibre glass carbon composite construction which locks when each section end is turned against the next section end. from the area directly in front of the antenna pod  expectations,Our Featured Products,Free all field Freight delivery,FREE & FAST 8" ANTENNA MAST FITS 2009-2019 Kia Rio, Car Key Fob Transmitter Alarm  METHOD OF MEASURING THE FIELD STRENGTH AT FIXED POINTS The electric field strength E to be measured induces a voltage V0 at the antenna base. Would it be handy to have something for quick attach or release with a hand? The carabiners AHOS## with a smooth surface might be the right choice. Surplus military mast is a great method to support your Field Day wire antennas or small VHF Yagis. The only interference you would need to worry about would be from other structures and not the from the mast. EXB-masts extend to heights up to 15 m (49. Antenna size and weight usually dictate which mount is used. Our 2018 Field Day Phone Station antenna. Carbon Fiber Roof Mount Replacement Mast - 4 Inch. ab-22/gr antenna mast section Aluminium Telescopic Mast System - Various Length. STV telescopic winch driven masts. Each leg of the V-beam is 180 feet long. The more recent AB-621A/G is guyed in three directions and has an extension kit MK-2044/G to 100 feet. In FM broadcast, the antenna is usually mounted to the mast near the top. We have a 50' box trailer that we use as our mobile garage more or less when we're out in the field. Load capacity of up to 22 lbs / 10 kgs. • An operational modal analysis (OMA) on a self-supporting antenna mast is performed. ANT-KIT-29-U quantity. on the open area test site, two antenna masts with 6 m height are available. Choose from CHAMELEON ANTENNA, Comet Antennas, ROHN, MFJ, and more! Ideal for Field Day or remote operation, our antenna tripods can provide a sturdy foundation for your portable antenna. For operating frequency at about 3 GHz, how far apart must the antennas be? For a typical base station and antenna (output power is 20W, antenna gain is 15dBi) and considering general public, the area. Metal parts are located only in the base plate and the drive mechanism (max. Thus, electric field antenna factor is often expressed in dB. 5" in diameter. 5 to 4 meters. Antennas SMC design and manufacture highly efficient and reliable Antennas, They are renowned to be high in quality, performance and responsive in the most challenging environments. with gold finishing are perfect for ensuring a secure antenna or dish. Simply t search f. $ 185. 8, 15 and 30 metre heights; and • NBS free-standing, tilt-over and guyed masts for 5. The following is issued with the AN/GRC-26. The 1 kW HF folded dipole mounted on a Comrod 9 meter mast, subject to frequency and ionospheric conditions, will provide reliable long distance communications. I idea was to make a 16′ antenna mast. Telescopic Antenna Masts and Towers by Tim Price, Inc. 2021. The Zenith Antenna Masts, 4. Smaller base  Electric field distribution in the vicinity of an antenna system. Product Overview. The mast is guyed in four directions. Many translated example sentences containing "antenna mast" – Spanish-English dictionary and search engine component of the field, and an antenna mast. Comet CP-45 Telescopic Aluminum Mast is a four-section mast. 22. CORPORATION. Install the antenna in an open area, as far away as you must make sure that the antennas are not covered with ice. Antenna Tripod 29ft Aluminum Portable Tower Mast Kit. STM. The longer the better. Will-Burt’s Quick Erecting Antenna Mast (QEAM) is a series of reliable screw-drive or strap-drive guyed field masts made of high-strength 6061-T6 aluminum tubes. Antenna Mast Most of the times I use a 10m (33ft) aluminum telescopic push up mast (1. I guess I'll have to go calculate the field strength vs. 2 ft. UNUSED White Surplus 4' Heavy Duty Fiberglass Mast Sections - Ring on Female End of Mast - Lot of 4. / 18. Comes with eight 1. 3200. 5985-507-6261 6 Mast, AB-155/U, AB-155A, B/U. The mast rods are made of glass fibre to avoid unwanted reflexions. Government agencies and their contractors for official use or for administrative or operational purposes only. com  Summary · A roll-up J-pole makes an excellent field antenna · A 32' telescoping fiberglass mast is highly portable and gets the antenna up above all one-story and  the observing antenna must be in the radiating antenna's far field. 16642A3 shows the standard mast assembly for  Measurements of the RF electric field strength and RF EMF power density were conducted in the near- and far-fields of the mobile telephony base station antenna. scanner, and large near-field scanner) allow for antenna, radar cross section, mount. 11. APRS Antenna Mast on the roof of my Van, but now have finally added it to the comm shelter I now use for APRS field events. $929. The masts utilize up to 10 composite telescopic sections which are extended by a mechanical winch-driven hoisting belt. 32 feet Standard Duty Fiberglass Push-up Mast MK-6-STD. 62 caliber antennas. Supplied with black carry bag with tie FAQ: Spare parts are available - see below. There are perfect for field work! ROHN H30 Foot Telescoping TV Antenna Mast. The 25mm diameter high grade aluminium mast Field tests are essential to proof the validity of computational models. The antenna mast also leads to a reduction in the sidelobe attenuation of the vertical radiation pattern of an array antenna. Use of these mounts can eliminate the need to cut a hole through roof overhangs or to field fabricate mounting brackets. If you were to have an antenna on top of a fiberglass mast, as far as the antenna is concerned, it would think it was floating in mid air. NOS military antenna mast section AT-442/GR 8 foot. Minimal payload twist with vertical keys. This will be the center support for the 80-meter dipole, as well as the support for the VHF/UHF/Cellphone antennas. Designed for manual operation, QEAM elevates light payloads for ground- Antennas, Masts, Positioners & E-Field Probes. Unlike standard towers, you can take it down anytime you want quite easily if you change your mind and put up again if you wish as it’s a simpler solution! Antennas include an AM-FM broadcast radio antenna, 1. Photo credit: Tim Carter – W3ATB ROHN 9H50 34 Foot Telescopic TV Wireless Antenna Push Up Mast Made in the USA! Special ROHN Factory Limited Edition Run of the H50 5 section Mast collapses down to 99. Customized for any length and connection, the rigid metal antenna will remain in position on the body or kit, while being flexible enough to conduct an omnidirectional SATCOM shot from any position. If setting up in a parking lot use those holders with a flat plate that you park one of the wheels on your car on top of. We sell the 210098 and the 210015 which have a 31in mask that is perfect for FM and not as good as it could be for AM. The most convenient location for the aluminum mast is 6 feet away from the fiberglass mast, on a right angle to the horizontal portion of the EFHW (think "L", where the horizontal portion of the EFHW extends due north). 1) Lift hood of vehicle and locate antenna bass and coax cable. Further and ante. 00 $ 250. It is designed to be easy to transport and set up. Aluminium Telescopic Mast System Heavy - Various L. I live about 45 miles + from the towers. One of the most common ways to install an antenna mast is to use wall mounts that attach to the side of Also called an aerial, an antenna is a conductor that can transmit, send and receive signals such as microwave, radio or satellite signals. 99. Glass-fiber tubing for VHF-UHF antennas. 3400. This page details the installation of a mast and antenna at my previous house, providing me with a connection to the Martin Mast access point. Also included, and connected to the impedance matching device pictured above is an HF slant wire for regional NVIS comms while stationary. Field Regions. table antenna mast designed for the ham on the go. BlueSky Mast designs and builds the most advanced mast systems for communications and survaillance. Weight: 1. 335,29 EUR export price - outside Europe * Cobham Mast Systems manufactures seven main product lines: TM-, TR-, EX-, EXL- and EXB-masts, telescopic lifting poles and tripods including accessories for deployment. The mast/stick is capped with a cane rubber bootie. Top mast piece is cut down to 18' long for the top mast. It weighs only 3-pounds and it's intended for light duty applications. 2002 р. , 35 to 50 years vs. Now grasp it firmly and imagine about 20 or 30 kilos on top. A mast height is generally between 10 and 15 metres. View Details. Typical applications of these masts are for supporting small omni-directional antennas and log periodic antennas. 1) Use socket wrench to remove three mounting screws on antenna mast base. 5 днів тому Industry-leading telescopic mast manufacturer, providing masts for commercial, military, security & government applications. The galvanized pipe is 17 inches tall and has an ID of 2 inches. Height range: 0. $239. 8 metre heights. (Tennessee residents must add Sales Tax ) 10 stainless steel knob screws. Your The Antenna and the Mast. 2021 р. Antenna mount that is used to secure the GNSS antenna. 6. I'm looking for a mast system that can be brought out into the field, and fit into a trunk of a car. 7-Stage Fiberglass Push Up Equipment Mast - Extends from 5. A firm favourite for amateur radio users is the yaesu rotator for directional antenna alignment. 29. $16. 82. 25 each. Using a 16'4" wire radiator suspended by one of the ~$10 Chinese fishing poles from eBay, a waterproof plastic box (also available from Hurry-Up Mast. This leaves about 5' of base both above and below ground. 15. 0 to 4. WTM/3. A Two Element HF Cubex Quad up at Mx. com, of which telecommunication tower accounts for 15%, lamp poles accounts for 1%, and power distribution equipment accounts for 1%. EFHW extends from 3 feet up to 46 feet on the fiberglass mast, and then over to another mast for the horizontal section. With the exception of the drive unit. After you have run the transmission line, use a compass and field-strength meter to orient the TV antenna toward the signal source(s). This determination was made on 17 February 1987. This antenna will get installed in an open field type area that is well above my house's chimney, behind my house. NEC solves an electric field integral equation for wire structures Easy fix - this antenna mast repair kit fixes a broken antenna externally without the hassle of removing the antenna cable under the dashboard. The end supports of the wire antenna were placed about 70 feet from the center support. The fields surrounding an antenna are divided into 3 primary regions: Reactive Near Field. Height: up to 30 ft. View the Assembly and Use guide. 55 lbs sh. Whichever mast you use if setting up on dirt use guy wires. But using one of these is a compromise to having a 4ft mast for the best AM. I mount a windom type an Expedition Series Field Masts. A mast or tower is simply the thing that holds the antenna up off the ground. These masts are made of aluminum tubular section, which can be used for fixed or transportable applications. Out of stock until November, 2021. / 9 m • Spike for locating mast base • 3 x tent pegs • Club hammer for mast spike and tent pegs • 3 x 7m guy sets (winder/tensioner, VB cord, Velcro strap, snap hook) • 15m coax with UHF-UHF connectors and UHF-BNC adaptor • Mast has a spring hook for quick antenna installation and release and velcro straps to secure the coax transmission Antennas, Masts and Accessories for Military and Emergency HF Radio Manpack Tactical Forward NVIS Antenna and 3-Pole Mast Kit (Sand) 24 Ft Tactical Long Range Mast in camouflage green, with contrasting folded dipole broadband antenna OTHER ANTENNAS: Besides the photo below of a typical APRS Field Day set up and using the trailer to observe the 2004 transit of Venus (without the mast), you can see some of my other antenna projects, this one for AO-40 was also a fun hardware project: See the portable Dish design page. Mobile antenna mast - Ftm 24/5 PL is the structure manufactured in military version and allows for quick installation of the digital radio link antennas with external RF modules, GSM sector antennas, omnidirectional antennas and the antenna of a radar system with a drive module. Antenna Mast For EMC Testing For CISPR and FCC Radiated Test to Change Antenna Height The AM-400 antenna mast is suitable for making EMC radiated emissions measurements in an open area test site or test chambers. And this is the antenna adapter section. Does it behave itself? Aluminium Telescopic Mast 18m (60ft) transportation length 200cm - weight 18kg. 44-RMCF. "You are watching me put together a 20 meter ham radio vertical antenna constructed from surplus military tent poles and tape measures. It weighs 60 tons and rests on a socket in a large porcelain insulator. Summary. At least for the well known DIY 1/4-wave groundplane design. You can also choose from aluminum, steel 50 Some places have their own limitations (ie the free space is limited and the antennas will be layed outside of the serviceable field). 25" OD 16 AWG swaged end Antenna Mast tube is galvanized for weather and used to extend any 1-1/4 inch 16 gauge antenna masts by fitting the swaged end of this mast into the open end of the other mast tube, thereby extending the existing mast an additional 5 feet. But after building it and trying to set it up I realized that the 1/2” PVC would flex a little to much for my comfort. $ 239. The 1/4 wave vertical element is mounted above the bottom mast Antenna Masts Filed in Antennas on Jul. 13. Aluminium Telescopic Mast 18m (60ft) transportation length 200cm - weight 18kg. 20m transportation length, bottom tube diameter 75mm, top tube diameter 30mm, tube wall thickness 2mm). AB-24 MAST SECTION. THIS IS FOURTH OF THE 4 SIZES, THREADS INTO THE AB-23 ON ONE END AND HAS A TIP ON THE OTHER. AC supply included. APRS Antenna for AO-40. The X300A, which is a 10-foot antenna, is mounted on top, and the 6M horizontal loop is mounted about 5 feet below that. A high-gain Webopedia is an online dictionary and Internet search engine for information technology i have a TP-link TL-WN722N wifi adapter it came with a detachable 4dbi antenna but its range is not good i want to use some wifi which are far from me with my current adapter the signal i get is very weak so i think by replacing antenn Also called an array antenna, antenna arrays are several antennas connected and arranged in a regular structure to form a single antenna. • Page 6 - Antenna Options. The mast pivots on a 3/8 X 8" bolt at the base midpoint just above ground level (dashed rectangle). Improved design - made of machined aluminum for greater durability than the original part. In general terms, and of course if site permits, YES, a tilt base on your telescopic mast is much better than a fixed base. The other leg goes SE, attached to our second mast. eHam. Do not compare the E-field antenna with a radio/television antenna, which can only see just over the horizon. It is particularly useful for experimental work and field strength measurement. A small piece of grounding rod is welded to the end of the bolts so you need no tools in the field to secure the antenna mast. Floatograph® Mast & Trailer Solutions Technologies manufactures high quality, ruggedized Telescoping Masts / Portable Towers and Trailer Systems for use in homeland security, defense, commercial, scientific, and law enforcement sectors, to name a few. Get a quote today! Antenna Masts For EMC Radiated Emissions Testing Soil acidity: Galvanized steel antenna masts corrode faster when installed in acidic soils than in less corrosive soils, i. Antenna Masts are an integral part of EMC and RF measurement systems. 7m Aluminium. 5' is going into the concrete and 5' is the top. Designed to be easily deployed and for optimal performance, our range of masts and dipole antennas are durable and lightweight, yet can weather the toughest conditions. Temperature: The corrosion rate of galvanized steel is the same in temperatures ranging from -40 to 392 degrees Fahrenheit. The masts and information on this page is for temporary deployment of masts and antennae for Field Day or portable operations, NOT permanent installation. 8" diameter 44 inch (48 inch overall) sturdy fiberglass mast sections, two high quality plastic guy rings, 300 feet of rope (cut according to your need), three guy stakes, and weather proof bag. Our range includes HF Antennas, MF Antennas, VHF Antennas, and Microwave Antennas. 8 metres, and guyed masts for 8, 10. 740” from top to bottom. The antenna is easily pipe or mast mounted. 18495. The quick lock / release collars will maintain mast height indefinitely. See Options. Check the picture and sound on all channels before you tighten down the clamp that secures the TV antenna to the mast. Fully automatic latches within the mast control the order of tube section extension. Sold Out. $275. Each mast system is supplied with a full field deployment accessory kit to enable easy mast deployment and fast take-down. Accessory kits are packed in all-weather tarpaulin bags. EXL-masts are designed for medium to heavy duty applications with extended heights up to 164 feet. COBHAM EX128/18-4 NEW UNUSED SURPLUS PORTABLE MILITARY 18M / 59FT CRANK UP TOWER WITH ROTOR, ACCESSORIES + MANUAL. The tall streak of light is the 718-foot antenna mast of KDKA in the glare of searchlights. HF Antennas Archives - Shakespeare Military Antennas. In some applications, a metal mast is the antenna itself, as illustrated in Table 1, Verticals . With EMC testing it is important to have the right antenna. I happen to have an old 20Kg dumb-bell weight that slips over 2 inch tubing but I did find a cheat’s method: Have the car driver raise the mast so that antenna end of the mast is about 6 feet above the ground. 9 inches) Base cap diameter: 55 mm (2. 25 бер. Temperatures above this can cause galvanized steel to loose I happen to have an old 20Kg dumb-bell weight that slips over 2 inch tubing but I did find a cheat’s method: Have the car driver raise the mast so that antenna end of the mast is about 6 feet above the ground. 1 Reviews. EXB-masts can be equipped with various antenna adapter types and antenna positioning accessories. Arrow Antennas View our line of arrow antennas. The portable masts can easily support a wide range of commonly used directional and Omni directional antennas such as the dipole, yagi, spider beam and other types of beam antenna. UNUSED Surplus 4' Ribbed Aluminum Antenna Tower Mast Sections - Lot of 4 - Female End of Mast with ring. (eg. It is a two-leg V-Beam. 21995. Mobile Antenna Mast Ftm 24/5 PL. Black Spiral 1-section Replacement Antenna Mast - 17 Inch. Height: up to 60 ft. A Timber Antenna Mast; A timber antenna mast. 3" Heavy Duty Wall Mount The 3" Heavy Duty Wall Mount kit allows you to attach an antenna mast, up to 2. fits as an upgrade to all our aluminium masts. 44-RMF2. Add To Cart. Aluminium Telescopic Mast 12. 118 MHz-174 MHz operating frequencies, 0 dBi. In the summer of 2009 I acquired an MFJ-1910 33' telescoping fiberglass mast that I hope will be useful in field operations. Order now! EZ 5-16S 5 Foot 16 AWG Swaged Antenna Mast Section Made in the USA! This 5 Foot (60") by 1. 7. Ground Mounted Antennas. The Model 120 Antenna System suits The Antenna Farm : Mast & Pipe Clamps/Hardware - VHF & UHF Mobile Radios Radio Accessories VHF & UHF Hand Held Radios Antennas Mobile Antenna Mounts SWR/Power Meters Adapters Coaxial Cable Two Way Accessories Antenna Accessories DC Power Supplies Coax Cable Accessories Amplifiers Connectors Aviation Radios Repeater Systems Towers & Accessories Scanners & Receivers Duplexers Diplexers Cobham Mast Systems manufactures seven main product lines: TM-, TR-, EX-, EXL- and EXB-masts, telescopic lifting poles and tripods including accessories for deployment. length 165cm - weight 12 kg Excellent Field-day mast for portable Spiderbeam Yagi: 399,00 EUR incl. PART OF RC-292 ANTENNA AND MAY BE USED IN OTHER ANTENNA SETS. 5820-221-1563 1 1 Cover CW-124/GRA4: SC-D-28056. $1238. doing business as Contact! Corporation are tactical, composite mast systems currently in use by the military, emergency and first responder services. The bottom section is a guyed mast, which is guyed with four 1/4 wave tuned radials. • Both displacement and strain mode shapes are compared. Antenna/Mast, CTM12 NSN 5985-01-408-8730. 0-P-12kg Compact Antenna Mast. family of winch-driven telescopic antenna masts (4 - 18 m) STV-EW. Army The power density within the near field varies as a function of the type of aperture illumination and is less than would be calculated by equation [1]. Innco system masts are renowned worldwide as the standard benchmark. The mast has a 1-5/16 inch diameter at it's base and 7/8-inch diameter atop. For a mast I use those cheapo 30' aluminum extendable flagpoles. We used the existing LMR400 coax for 2M/70cm, and the new RG-213 coax for 6M. Compare. 6 out of 5 stars 81. The far field region is the most important, as this determines the antenna's radiation pattern. Using the Jackite Fiberglass Poles as an Antenna Video On how ot use Jackite Fiberglass Poles as an Antenna: I use two 30 foot Jackite fiberglass poles to support a wire loop receiving antenna in the back yard. $69. It’s one-half-inch bolt material with a nut welded to the pipe. (1/m) which must be taken to mean referenced to  The omni-directional pattern of a vertical antenna when side-mounted on a mast or tower Laboratory and field measurements of these effects are analyzed. I took one length of pipe that was 21' long and cut it to make two 10'-long pieces. Complete kit - includes 1 antenna base, 2 mounting studs, 1 wrench and 1 hex key for simple installation. Both manual and automated solutions are available. • The identified modal characteristics are compared to those obtained from a detailed finite element model. Here is a simple antenna mast that anyone can make. *All masts are kits and some assembly is required*. GigaParts Mast Finial Antenna Mount. 2014 р. Constructed using US Tower’s patented Falcon Mast Extrusion, the ALM optimized the strength to weight ratio making it the ideal choice for home use or field-day use. 0 m (electrical) Suitable in magnetic absorption chambers. CF Water Transfer Print - Roof or Fender - 13 Inch. 50 O. Metal masts and carbon fiber masts can all cause interference when it comes to radiating signals. We offer a complete range of solutions, including automated test systems , TDK anechoic chambers , software , antennas , and a wide range of test products . Over 90% of our products are manufactured here in the UK supporting our clients on a global basis with their covert and complex communications infrastructure. Therefore, I bought an Antennacraft FM6 yagi antenna for the roof. When reliable HF communications are required, the Model 120 HF Antenna System is the obvious choice. 1) Reach into side opening along fender and pull coax cable from vehicle through rubber gromet. Abbree Foldable CS Tactical Antenna; ABCs of SWR; Addig 80 meters to a 40 meter dipole. Thus, in the antenna near field there is stored energy. An electronic weather station sends pulses and not only DC signals. EXB-masts are made of carbon and glass fibre. Come and grab the "Top Hat" for your mast and make getting on the air quick and easy! A ubiquitous 5/8" diameter allows this Top Hat to slip into the top of your mast effortlessly. 608 results Our base station antenna systems offer quality solutions for any challenge, reliable, and trouble-free performance in the field  The Larsen NMO150CHW base-loaded 1/2 wave antenna with coil only operates within the VHF frequency range, 144 – 174 MHz. 4. Fiberglass Antenna Tower 30ft Swivel Stake Mast Kit New. These antennas Yagi is an antenna that radiates in only one direction and is commonly used in point-to-point communications. These radars are non-rotating, four-faced active phased array radars, which in itself is a major performance enhancement. 95 Add to basket outdoor operations, field days, DXpeditions, etc. But getting your antenna and your EUT both in the right position for your test is just as important. The decision to use four radials is to simplify the raising of the antenna rather than for performance. BM1 Antenna Mast Building Mounts can be used to mount antenna mast to a building with an overhanging roof or other obstructions. $9. MAGNETIC MOUNT Mast Material: glass-fiber composite (non-conducting) Tube diameter: top 3. If you are using the full 10 section height of 37 ft. MAY HAVE MINOR RUST, PAINT LOSS, MINOR BENDING The mast described is a four section easy build low visual impact antenna support for light weight antenna arrays, it is only 4 meters high and extends to a height of 9 meters when raised, when used with a suitable rotator support cage additional hight is easily achieved. / 18 kg Hurry-Up Telescopic Mast. Our masts are in service with many military and government organizations. TM 10 Antenna Mast The TM 10 quick erecting antenna mast is designed for manual deployment of light payloads for ground mounted, vehicle and shelter deployments. Designed and qualified as the AB-1386/U for the U. 02, 2009 My good friend from Omaha, John (wb0who) arrived on Friday, June 26th to participate in Field Day and get a tour of the Ranch. MAGNETIC MOUNT Mast Topper Beacon with Wire Antenna Moorings. ROHN H30 Foot Telescoping TV Antenna Mast Made in the USA! ROHN H30, 3 section Mast extends to about 27 Feet in height that ships to Commercial and Residential addresses alike. Mounting area clear for at least two meters of any metal or other material that could act as a shield  The AM-400 antenna mast is suitable for making EMC radiated emissions measurements in an open area test site or test chambers. Webopedia is an online dictionary and Internet search engine for information technology and computing A dipole antenna is an antenna that has omnidirectional coverage (equal sensitivity in all directions). 2020 р. Antenna Mast) cable. 8-30 Mc center-loaded HF whip, 51 Mc Whip, 28/27 Mc whip, GPS antenna under a radome on roof, 145 Mc 5/8 wave whip and VHF/UHF scanner whip. $ 759,00. Antenna masts are. Mast accessories are designed for easy and comfortable deployment in all weather conditions; even in severe environments. Page 4-5 - Example Link16 Case. Drawing no. The mast nearest the LittleHouse was placed at the North West corner of the house, near the satellite dish. Close up shot showing the antenna mast mounting hardware. 17' 3-BAND FIELD VERTICAL. For all the other super functions of our goods, please visit the e-shop. 00 shipping. 8 Mast Sections. Meets MIL-STD-810F environmental standards for operations in extreme conditions. Formations набор деталей в масштабе 1:35, F010 это НОВАЯ разработка | Содержит, Анонсы, Обзоры, История + Магазин | Antenna. Every minute spent at an antenna mast R&S®ZVH simplifies all cable and antenna Rohde & Schwarz The new benchmark for efficiency in the field 3  Will-Burt's Quick Erecting Antenna Mast (QEAM) is a series of reliable screw-drive or strap-drive guyed field masts made of high-strength 6061-T6 aluminum  The Quick Erecting Antenna Mast (QEAM) Heavy Duty is a high capacity field mast that uses a strap drive mechanism to extend the mast sections. Our range of antenna tuners deliver high The design of this Field Day Antenna is an above ground mounted ground plane vertical. Aluminium Tow Ball replacement with 5. The unit has several mounting options and comes as standard with a 600mm ground stake which is hammered into the ground providing a locking cylinder for the mast 2,199 50 antenna mast products are offered for sale by suppliers on Alibaba. This cable series is designed specifically for use  Does the FCC routinely monitor radiofrequency radiation from antennas? a base-station antenna must radiate its signal to a relatively large area,  Picture of Antenna of the military field radio communication complex on the mast stock photo, images and stock photography. Antennas will be a quarter wave ground plane and a UBI parobolic. 2013 р. Smooth carabiners AHOS## & rope cleats ACTP## 12. 1), the following forces will affect the system: gravity force (mass of the mast, ropes and antennas), resistant wind force, tension force of the guy ropes. The weight of the mast is over 120lbs, so some kind of winch is needed to erect it. The mast feels different in your hands as it approaches the tipping point. I made a hole in its center to run a tent stake through it to secure it from sliding off when erected. A wide variety of 50 antenna mast options are available to you, such as auto cad layout. foldable antenna mast with tripod - length up to 6 m (20 foot); Rev. A mast is generally a single piece of pipe, while a tower is a set of interlocking pipes looks like a good field day antenna candidate for my SNJ location, as long as a tall tree or mast can be found to allow me to orient the down-slope side of the antenna towards the west-southwest. Image 49281512. Our mast systems are lightweight, portable, durable and multi-functional. Tune the meter (or radio) to the frequency (or station) to be trapped out and then adjust the trap to the point at which the unwanted signal is attenuated, as indicated by Operating between 530 and 1750 kHz, the high impedance E-field antenna contains a high gain signal amplifier and high pass filter for reduction of lower frequency interference caused by dimmers and power lines. narrowbeam antennas T-Bar Adaptor • Enables two antennas to be mounted at mast head simultaneously • Straps to mast body for transportation Half-Way Up Adaptor • Side mounting for antenna Not Shown: Vehicle mounting brackets Field repair kit Halyards Permafrost/rock/ice anchors Standard and heavy duty anchors Telescopic mast from 7m to 21m for ham amateur radio antennas, telecommunication towers, CCTV equipment, field lighting, traffic monitoring, sound systems. A dipole antenna is an antenna that has omnidirectional coverage (equal sensitivity in all directions). Essentially, I need to build a collapsible tower we can stow when not CORPORATION. Com-Power model AM-400A is a fully automated Antenna Mast which can be controlled through the Com-Power AMTTC-300 controller. Antenna height automatic adjustable from 1. You will see that mild banana shape we discussed. One of the popular items on various news groups and in several web discussions is the use of Military Surplus LCSS aluminum (1080-00-108-1173) and/or fiberglass (1080-01-179-6025) mast E-Field Antennas & Generators TDK RF Solutions is a world leader in the design, development, and manufacture of technical solutions for the electromagnetic compatibility testing industry. 24 вер. Check out the variety of detachable antenna mast systems. 5 ft. The Hurry-Up mast can be extended to a full height of 30 feet (9 m) in one minute or less. 7,99900. The four sections of the mast are constructed from light weight aluminium NBS Antennas & Masts construct standard and heavy duty telescopic masts in either the 2000 or 3000 series. Army QEAM™ program, the simple, easy to operate design, is affordable for a wide variety of mobile communication applications. All aerial Telescoping push-up Masts are galvanized and come with hardware designed to support light duty aerial antennas. Guy rope sets come with NATO green cleats tensioners or Autolocks which are easy to adjust for one man mast erection and also come with stainless steel quick ST. Accessories ANT-KIT-29-U. Grounding will eliminate static electricity, as well as protect against energy to the mast if the antenna comes in contact with live electrical wires. 40' EMT Pipe Mast for Antenna? Howdy, I have a need for a tower for our antenna for a repeater for our 450Mhz equipment. Insulated mast & antenna box. Masts can be constructed to your specification subject to material limitations. Can I place this anten An antenna mast is used to elevate and secure an antenna at a higher location to help improve the antenna's ability to receive signals. 1) With small wrench, loosen antenna mast. $225. I love to DIY, but if there's something under the $200 range, I'm OK buying as well. Masts are available from vehicle mounted unguyed masts to 50 m stand alone field masts. 9mm (0. Really cheap and really efficient. D. 10 квіт. 85. 25in OD Heavy Duty Stackable Swedged Pole (SSMAST) Brand: Solid Signal; P\N: SSMAST; UPC: 700112818226; 3 Reviews. EXB-masts support payloads of up to 165 kg (364 lb), depending on mast performance requirements. Comrod has a large range of tactical ground and remote antennas covering the HF, VHF, UHF and SHF frequency bands operating up to power ratings of 1 kW. A Guide To Masts For Aerials & Antennas. Antennas: Base or Field:. $6,477. AA125 Broadband HF Folded Dipole Antenna System. An antenna mast helps enhance the signal speed by placing the antenna in a higher position. Together with a foldable tripod it is very suitable for putting the antenna up in a one-man-show. 5 to 13. Houses with antennas erected on their roofs were becoming a thing of the past. You can get the materials at your local hardware store. A very modern field of antenna technology is summarized as fractal antennas. The MK-6 Series of masts are, by far, our most popular masts for many reasons. Products. Note the two ports that allow for easy hanging of end-fed If you are wanting the best AM reception you will need a long antenna mast. This item is expected to be in stock in 49 days. If we look at the simplified model of the guyed mast and the antenna at its top (fig. $191. Approximately 2 feet of the first section sits below the roof apex in the bottom of the eave mount, so about 13 feet of mast is above the rooftop. Designed for Tactical & Emergency services applications, the MIL-51 kit comes complete with all necessary tools for installation, making it a quick and easy solution for your short term, portable antenna & aerial tower needs. 5m galvanised pipe (50mm external diameter) 2m and 3m galvanised pipe (32mm external diameter) modified Conifer (ex Galaxy) 24dBi antenna. Center Mast site. The mast is made of Glass Reinforced Plastic (GRP If you are wanting the best AM reception you will need a long antenna mast. I put the Tactical 7000hds through the rigors of portable operation The specifications are for use with a typical antenna with a boom length of 14 ft and element length of 27 ft giving wind loads of 100 Ibs at 80mph. Designed for manual or motorized operation, Will-Burt’s QEAM (Quick Erecting ALM-31 Aluminum mast. Antennas, Masts and Accessories for Military and Emergency HF Radio Manpack Tactical Forward NVIS Antenna and 3-Pole Mast Kit (Sand) 24 Ft Tactical Long Range Mast in camouflage green, with contrasting folded dipole broadband antenna If you are using the full 10 section height of 37 ft. Available with composite or aluminum tubes. Do you live in a relatively remote place where most signals are slow? Then you probably need to learn how to build a 40' antenna mast. Results 1 - 16 of 16 The antenna operates in the 2. The Hurry-Up mast features quick lock/release collars to extend the mast manually by pushing up the sections and fixing them in position. We are out of complete masts and tubes, but do have some parts in stock. 15 inches) base 49 mm (1. It would not last long in the field. A top band aerial for small gardens; A top band aerial for small gardens. 50 Foot Outdoor TV Antenna Telescopic Mast is designed to support light duty Antenna load (top load) should not exceed an effective projected area (EPA)  8 лют. B. This page contains information regarding resources available to emergency communications operators. If the mast starts to fall, just get out of the way and let it go: that’s one reason why the antenna on top is added after the mast has been set up initially in the right position. 62 Caliber Antennas View our line of 7. They have stood up to the searing heat, and bitter cold, and huge temperature swings of the SW Michigan climate, which ranges from 110 degrees F hot in the summer, to 15 degrees below 0 As an Antenna Distributor of 19 YEARS, we have the LARGEST Selection of AM/FM Power Antenna Masts. Contact!, an ISO 9001:2015 certified company, is a systems integrator and the North American distributor of telescoping antenna DIY PUSH-UP ANTENNA MAST by KE1Q: This mast consists of 5 foot sections of 1-1/2”EMT (industry size) (Electrical Metal Tubing) galvanized on the outside and coated on the inside. • To reduce the chances of your antenna or mast being struck by lightning, follow the National or Local Electrical Codes to properly ground these items during installation. This mast is very much like a larger version of the 20' Black Widow I have been using. 8 to 25 Feet - 24" Aluminum T-Head. 75+ years.