Uhf Collinear Antenna Design

Collinear antennas are available in standard aluminium, ruggedised and stainless steel versions. This is all thanks to the 2/4 element design. It is a measure of how 'directional' an antenna's radiation pattern is. The original coaxial collinear was designed before antenna modeling software was commonly available. The Comrod UHF225450M is an collinear / stacked dipole antenna designed for operation across the 225 to 450 MHz UHF band making it suitable for operation on a range of military and other private radio frequency bands. NMO Mount and Coaxial cable not included. Our range of wireless antenna solutions cover entire communication band seamlessly from HF to 8. This item is currently out of stock. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. While it is not always feasible to home-brew a commercial quality antenna designed to take hurricane force winds, it is very feasible to built a collinear antenna for average use. coaxial cable dipole collinear. The most common CATV cable is 1/2-inch OD 75-Ω Hardline. MOBILE ANTENNAS Base Loaded Unity and Gain Antennas * Suffix "S" indicates spring, which is not a retrofit option. Antenna Design and Manufacturing Corporation's VHF/UHF LINE OF SIGHT COMMUNICATION ANTENNAS are broadband dipoles designed for ground-air-ground, air traffic control and base communication applications in the VHF frequency ranges from 30 to 90 MHz and 118 to 1741 MHz, VHF/UHF frequency range from 400 to 1000 MHz. 1-1/4 meter mobile gain antenna with trunk lip mount. UHF bowtie TV antennas and PCB meanderline antennas used in some wireless devices are. I'm going to build a coaxial collinear for 2m/70cm, and need help with the design of the top 1/4 wave portion. On the other hand, if you just want to play around with antennas, you might want to try building a 2m collinear. 130 - Earth-Mover Inverted-V Antenna for 40m. the wb3ayw multielement collinear antenna This is an introduction to a high gain VHF/UHF vertical collinear antenna program and project that can be an asset to many of you that are looking for more gain in a vertical antenna for base or repeater use. The Comrod UHF225450M is an collinear / stacked dipole antenna designed for operation across the 225 to 450 MHz UHF band making it suitable for operation on a range of military and other private radio frequency bands. Some of these are real, while others are either imagination or over blown facts. 450-470MHz. Building a Yagi Antenna for UHF 35. 2 meter home built collinear antenna. Development of VHF Collinear Antennas, Matching and Feeding Techniques Jose I. Resources listed under Collinear Antenna category belongs to Antennas main collection, and get reviewed and rated by. The RF power wave reshaping help taking some of the RF power emitting vertically to the horizontal radiation. This post will a simple to build variant of the antenna that can be used to receive 170 to 230 MHz channels (5 - 12) and a part of UHF between 470 - 720 MHz (21 - 52 channels) with a minimum gain of 5 - 6 dBi. The patented Meander collinear element design allows multiple half wave elements to be stacked without the variations in cable lengths and mechanical joints which have typified the construction techniques in high gain collinear antennas. 1-1/4 meter mobile gain antenna with trunk lip mount. Polivk a and A. A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. 1 I EF The EF is the " elevated feed ' antenna line, The EF is designed to , temporaiy mounting, P0 The PO Series mount is an S0239/ UHF type mount, and fits in a 3/4" hole, The , directly to an SO -2 3 9 UHF connectoi; the MHW is a halfwave design, and requires no ground plane for. Submitted by Gary Ruehle. Our extensive range of collinear antennas is available in traditional frequency specific designs and feature our patented broadband low PIM PCB based meander™ and corporate fed PCB antennas. Super J-Pole Antenna (Collinear Design) - By KB0YKI VHF/UHF Antennas-- By KB0YKI -- J-Poles, Super J-Pole, Omnidirectional, Quads, Yagis VHF EggBeater Antenna - From ON6WG / F5VIF Quick and Simple 2 Meter Ground Plane Project Via HamUniverse 2M Yagis. 1296 mhz collinear antenna with coax. Save collinear antenna to get e-mail alerts and updates on your eBay Feed. Therefore, polarization matching at the two sites is not critical. This one is more suited for 802. UHF Corporate Collinear Antennas Related Products. UHF Fiber Glass Omnidirectional High Gain Collinear Antenna AC12-350 300-400 MHz. Tilt the angle of the antenna until the signal peaks, then measure the angle with a protractor. However, with some improvements, the antenna can receive well both the UHF as well as VHF-Hi. Direct Mail. The conduit radome provides a robust and sturdy enclosure for the antenna, and if required, it can be mounted outside in the weather. Antennas similar to the Diamond X500 or X700 will be usable. Easy installation , simply tighten set screws to the underside of the trunk lid. There are two variants of the SBGH. New (Other) $35. A rotor positions the antenna between NH and Boston stations. 3dBd gain omnidirectional collinear antennas characterised by broad operating bandwidths making them suitable. Antenna, collinear use collinear and line basic as in hams beam of mfj from a… See more Antena Wifi Dipole Antenna Ham Radio Antenna Radios Packing Lists Conversation Projects Ants Circuits. Find UHF Coaxial Collinear Antennas related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of UHF Coaxial Collinear Antennas information. Outside will give the best performance. Collinear antennas is a curation of 21 resources about , Home-brew Compact 6dBi Collinear Antenna, Collinear antenna building, Build A 9dB, 70cm Collinear Antenna, Design your Own Super J Pole, 2. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. The only reasonable cable I could get my hands on was RG-213 from Maplin. The antenna features a. THE N4UJW Donald Butler ANTENNA PROJECTS DESIGN LAB THE BEST HAM RADIO OPERATORS HAVE GOOD ANTENNAS! You can't work them if you can't hear them! Design or build your antenna here! Antenna project contributions are from all over the world! HF, Vhf, Uhf antenna projects and lots more! Most are designed for ease of construction and…. Design goal: Receive more stations. While it is not always feasible to home-brew a commercial quality antenna designed to take hurricane force winds, it is very feasible to built a collinear antenna for average use. The Super J-Pole Antenna(Collinear Design) Below is a Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole. However, practically it is usually less than that due to losses. It is an object of this invention to provide an antenna comprised of two collinear dipole antennas, essentially fed in parallel through a single input connector. "Homebrew" UHF Yagi for Satellites by SV1BSX The design of my Homebrew 10 El. This is called a binomial or collinear array [14]. The signal pattern from such antennas tends to be disk-like in a horizontal omnidirectional pattern, 360 degrees around the antenna. I'm starting to research building a multi-band antenna in the 1. The antennas feature a tapped coil design to maximize bandwidth. This antenna has 3dB gain over a simple dipole and will handle transmitter powers of up to 50W. 6 dBd) and Long Boom Lengths (2. I like to use the basic DL6WU wideband Yagi designs whenever possible. This antenna features rugged construction and a tough fiberglass radome making it ideal for use in harsh outdoor conditions. Some of these are real, while others are either imagination or over blown facts. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. It's about 20" tall with a sealed phasing coil in the center, and offers increased gain over a little 611 spike. The design is by John VK2ZOI, who has excellent documentation and a step-by-step construction guide on his website here. It is available in 3 models to suit path requirements. The free-space simulation, below, of the buck0 design does show a high takeoff angle compared with a regular J-Pole and a double 1/2 wave collinear J-Pole often called the Super J-Pole. Collinear Mobile Performance; Model CGT-220. A 2-Meter Vertical Dipole Array Build this 2 or 4-Element VHF repeater antenna with up to 9. There is no one "best" VHF or UHF antenna design for all purposes. The Antenna Farm : No Ground UHF Antennas - 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. 28: An Easy to Build, Dual-Band Collinear Antenna by Dan Friedrichs, K0IPG I am particularly interested in this article, because at this very moment I am designing myself a 70cm colinear. coaxial cable dipole collinear. UHF Yagi is based on DL6UW Yagi antenna's design-formula. FG4500 Antenex Laird UHF Fiberglass Omnidirectional Antenna Unity Gain. The patented Meander collinear element design allows multiple half wave elements to be stacked without the variations in cable lengths and mechanical joints which have typified the construction techniques in high gain collinear antennas. CC450 Series. This arrangement accommodates either 2 independent 125 watt radios or else one 250 watt radio and a receiver. The Comrod UHF225450M is an collinear / stacked dipole antenna designed for operation across the 225 to 450 MHz UHF band making it suitable for operation on a range of military and other private radio frequency bands. The patented Meander™ collinear element design allows multiple half wave elements to be stacked without the variations in cable lengths and mechanical joints which have typified the construction techniques in high gain collinear antennas. coaxial cable dipole collinear. Since Wineaard actually controls the antenna’s production, it may not be available from any other source except Radio Shack, as it is not currently a popular antenna design. Calculate the required dimensions for a coaxial collinear antenna construction for any given frequency. Remember that VHF/UHF radio is pretty much a line-of-sight kind of thing. Ham Radio Big Boys Wifi House Plans Knowledge Wings Ants Consciousness House Plans Design. By scaling the 444Mhz design up to 2. Collinear Vertical Dipole Our DPV series of antennas are constructed using vertical dipoles that are a half wavelength at the midband frequency. The two dipoles can be divided and classified as a VHF dipole to cover the frequency range of 30 MHz to 115 MHz and a UHF dipole to cover the frequency range of 115 MHz to 512 MHz. This antenna was featured in CQ- VHF Summer Addition 2012 "An Omnidirectional Gain Antenna for UHF without Radials". UHF Mobile Collinear 380-400 MHz CD4000 The CD4000 is a high gain mobile antenna designed for 380-400MHz. Ground Plane Antenna You Can Build - Amateur Television Ground Plane Antenna You Can Build The Ground Plane vertical omni directional antenna is very easy to build with just some #12 solid copper dielectric at the ground plane end - they are very low loss at UHF and above and water proof. 5 GHz Microwave bands. Back to Antenna calculator overview. Southwest Antennas Part # 1085-212 is an omni-directional 10 Section Collinear dipole antenna that operates in the UHF band from 870 - 965 MHz and offers 12 dBi of peak gain. The RF power wave reshaping help taking some of the RF power emitting vertically to the horizontal radiation. Note: this schematic is for an eight element collinear array. 11 operation. Diamond ® Antennas are sold through authorized dealers. Two models are offered according to gain and coverage requirements. Hello, I am about to attempt to build a UHF collinear coaxial antenna and am trying to finalize a design. Technical Information:. A separate omnidirectional antenna was used for FM. The Super J-Pole Antenna(Collinear Design) Below is a Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole. UHF Base Antenna with +5dB Gain - perfect for repeaters - US patent 8,947,313. Lens - a lens antenna consists of layer of dielectric or a metal screen or multiple waveguide structure of varying thickness in front of a feed antenna, which acts as a lens which refracts the radio waves, focusing them on the feed. They feature a black UV stabilized ABS base that resists chalking and provides long lasting operation. There are two variants of the SBGH. THE N4UJW Donald Butler ANTENNA PROJECTS DESIGN LAB THE BEST HAM RADIO OPERATORS HAVE GOOD ANTENNAS! You can't work them if you can't hear them! Design or build your antenna here! Antenna project contributions are from all over the world! HF, Vhf, Uhf antenna projects and lots more! Most are designed for ease of construction and…. At VHF, UHF, and. UHF225450M is manufactured from high grade epoxy / fibreglass laminate with a brass and stainless steel mount. As the number of elements is increased, the gain increases and the beamwidth decreases. As a general rule, they are not practical at HF. Save collinear antenna to get e-mail alerts and updates on your eBay Feed. FG4503 Antenex Laird UHF Fiberglass Omnidirectional Antenna 3dbd Gain. If an indoor UHF antenna must be used, the two-bay bow tie with a reflector screen (pictured at right) is the best choice. They feature a black UV stabilized ABS base that resists chalking and provides long lasting operation. Regular and Collinear 1/2 and 5/8 wave antenna patterns. Vafiadis J. A collinear antenna, also called "co-linear" or "collinear antenna array", is a set of dipole antennas aligned along their length so they form one long line. UHF and 700/800 MHz Side Mounted Dipole SMD Series: Data Sheet. 5 dB gain, 500 watt. Size isn't an issue and it'll go on a 40ft tower. Includes mounting hardware and jumper. Gain DESIGN FEATURES: AC9 -450 Omni directional Collinear Antenna is rugged all weather model uses high class brass and 6063T6 ultra corrosion resistant aluminum alloy and. A-337-477-HD Ground Independent 433-500MHz, Heavy Duty, BNC Male Connection, UHF Antenna for Mining Applications. DC grounding ensures good immunity to static discharge and proximate lightning strike. J-Poles-- From The ARRL Super J-Pole Antenna (Collinear Design) - By KB0YKI 2M, 220, 440, 6M J-Poles Antennas -- Dimensions, matching, everything -- from Bux CommCo -- Be sure to read importance of a decoupling loop. Can be used for receiving aircraft transponder on 1090mhz ADS-b signal. Design Your Own 5/8 Wave Vertical Antenna The 5/8 wave antenna consists of a vertical radiator which is fed at the base of the antenna. 129 - 2m Vertical Wire Antennas. Another option is to strip out the insides to discard it and install a new home-brew collinear antenna, made out of coax section as. Yagi antennas, W8JK arrays, and log periodic dipole arrays are all end fire arrays. Build a short spaced vhf uhf collinear J Pole with very high gain. The patented Meander collinear element design allows multiple half wave elements to be stacked without the variations in cable lengths and mechanical joints which have typified the construction techniques in high gain collinear antennas. how to build a wireless collinear antenna. The antenna handles 400 + watts cw, and is used for com-jam applications. The great thing about J-Pole antennas is their simple design and excellent performance. A length of coaxial cable radiates negligible amount of RF. for single frequency or duplex applications. This article shows how a dipole and and ground plane antenna are similar but also Electronic Design. Construction Notes on a WA6SVT Coaxial Collinear Antenna thus the antenna ends up right on the design frequency after the tubing is put on. The proprietary design yields an elevation beam which points upwards at 5 degrees independent of frequency. 2 meter home built collinear antenna. The COL7 is a lightweight collinear design with minimal wind loading, making it ideal for mounting on moderate support structures. TSA Precheck. The main purpose of this array is to increase the power radiated and to provide high directional beam, by avoiding power. Polivk a and A. 130 - Earth-Mover Inverted-V Antenna for 40m. Directivity is a fundamental antenna parameter. I have done a lot of reading and am a little confused. Which antenna and what is dB? dB or Decibel is a logarithmic unit (a scale of measurement) that indicates the ratio of a physical quantity (for scientific details see wikipedia. Gain of a 10 element can be as high as 13 DBD and still be omnidirectional. A matching device of some sort must be added between the antenna and the feedline if you wish to feed it with coax. the antennas are collinear and there's at least 20' collinear tip-to-base then we can expect 45 dB of antenna decoupling. CC450 Series. Design of a high gain and low sidelobe coaxial collinear antenna array Abstract: A high-gain and low-sidelobe coaxial collinear (COCO) array antenna is developed in the UHF band. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. Resources listed under Collinear Antenna category belongs to Antennas main collection, and get reviewed and rated by. collinear antenna for 2 meters has a design gain of 10 db in less than 12 feet of length. There are two variants of the SBGH. antenna collinear for repeater vhf home made. Among the simplest of mobile antennas for VHF is the quarter wave vertical whip (often called a "stinger"). Our range of wireless antenna solutions cover entire communication band seamlessly from HF to 8. Collinear and Coparallel Principles in Antenna Design M. There are two variants of the SBGH. Max Power 100 watts. A sleek, one piece tapered fiberglass radome eliminates the inter modulation and mechanical problems associated with two and three piece UHF radome designs. how to build a wireless collinear antenna. - A high gain V/UHF collinear antenna, in the UHF band must have between 11 dB and 13 dB. Dual Band VHF/UHF Collinear Antenna The MBD1444(S) antenna offers VHF and UHF dual band coverage with 2 dB gain (at VHF) and 5 dB gain (at UHF frequencies). The patented Meander™ collinear element design allows multiple half wave elements to be stacked without the variations in cable lengths and mechanical joints which have typified the construction techniques in high gain collinear antennas. UHF Mobile Collinear 380-400 MHz CD4000 The CD4000 is a high gain mobile antenna designed for 380-400MHz. 2m VERTICAL COLLINEAR 6dB GAIN. This antenna was featured in CQ- VHF Summer Addition 2012 "An Omnidirectional Gain Antenna for UHF without Radials". UHF signals are broadcast on channels 14 to 69 and have a higher noise level and greater attenuation, so our high-gain digital antennas are often required. UHF OR VHF with calculator. iii 2017 Digital Replica Edition The VHF/UHF DX Book was written in the early to mid-1990s by a team of experienced VHF/UHF DXers and equipment developers, in an effort to pass on our knowledge and stimulate further developments. There is also a page (on this site) about this idea. As the number of elements is increased, the gain increases and the beamwidth decreases. 2m/70cm 6dB COLLINEAR VERTICAL. 8% and the gain is 6. Hard to construct matching coils are normally needed as well as hardware and tubing which can be difficult to find. The most common CATV cable is 1/2-inch OD 75-Ω Hardline. Homebrew Collinear Antenna - from just a piece of solid copper wire! Calculate the dimensions for a Slim Jim or J Pole antenna for HF, VHF or UHF - Including. 100-500 MHz Blade Antenna The SA AM100-3 has been in service on Falcon and Lear jets since 1983. It is also a very compact design lending itself well to a variety of mounting options and locations inside and outside. Renair Antennae design, manufacture and supply a range of comprehensive antenna systems, cabling & connectivity and accessory solutions for multiple sectors including Government, Public Safety, Private/Digital Mobile Radio, (PMR/DMR) Security, Traffic Management, Smart Metering, and Machine to Machine (M2M) Communications. UHF Corporate Collinear Antennas. UHF Fiber Glass Omnidirectional High Gain Collinear Antenna AC12-350 300-400 MHz. The high performance of our well known G6-144 and G6-440 are combined in our new 2 meter/440 dual band vertical, Model G6-270R. 3dBd gain omnidirectional collinear antennas characterised by broad operating bandwidths making them suitable. UHF (430-470 MHz) - Custom tuned to customer specification Configuration: two element ½ wavelength phase collinear separated by 1/2 wavelength Maximum power: 75 watts. Staples Sites Print & Marketing Services Design Services. - Yaguis for V/UHF of similar gain that is yaguis of about 2m or 3m of boom. 5:1 or better at 1090Mhz. core of a piece to shield of ad. RFI CDR5000-B UHF CB Collinear Antenna - Black / Black Chrome Spring 930mm The CRD5000 series is a light weight version of our CDQ5000 which is ideal for mounting on guards, mirrors or bull bars. Contact one of your local Diamond ® Dealers for current price & availability. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. Climie 860 Author: John M Wysocki ZL2TWS (June 2011) Mt. Ideal for fixed or repeater operation. However, practically it is usually less than that due to losses. UHF Corporate Collinear Antennas 450-512 MHz CC450 Series These industry leading, full featured corporate collinear arrays allow site operators to combine, with complete inegrity, a large number of communications services into a single, low profile antenna solution. The COL7 is a lightweight collinear design with minimal wind loading, making it ideal for mounting on moderate support structures. Same length, if cut into pieces of length (λ/2 * VF), and these pieces joined again cross-connected (i. repeater handbook has a good design for such an antenna. Make sure antenna is placed as high as possible with no nearby objects at least 50cm away from the antenna. COPPER PLUMBING VERTICAL COLINEAR ANTENNA Hello, everybody in this forum. collinear antenna 450 mhz schematic. The Comrod UHF225450M is an collinear / stacked dipole antenna designed for operation across the 225 to 450 MHz UHF band making it suitable for operation on a range of military and other private radio frequency bands. -Patented PCB based Meander™ collinear design offering the ultimate in pattern and gain stability. An effective receiver was made by "persuading" a ~US$4 Dorji 433 MHz ASK (Amplitude Shift Keying) data module into analogue s. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. Â These are a few of the modifications I came up with. Antenna Design and Manufacturing Corporation's VHF/UHF LINE OF SIGHT COMMUNICATION ANTENNAS are broadband dipoles designed for ground-air-ground, air traffic control and base communication applications in the VHF frequency ranges from 30 to 90 MHz and 118 to 1741 MHz, VHF/UHF frequency range from 400 to 1000 MHz. A quater wave antenna's radiation pattern like a dome. 1 I EF The EF is the " elevated feed ' antenna line, The EF is designed to , temporaiy mounting, P0 The PO Series mount is an S0239/ UHF type mount, and fits in a 3/4" hole, The , directly to an SO -2 3 9 UHF connectoi; the MHW is a halfwave design, and requires no ground plane for. Building a Yagi Antenna for UHF 35. The Lazy-H Array. The COL7 is a lightweight collinear design with minimal wind loading, making it ideal for mounting on moderate support structures. I know, I was just kidding about cutting ithow about a x-ray?? Wellthe home made-modified 2 meter collinear to UHF military band collinear antenna works. The Pennyloop antenna started out as a single. The RF power wave reshaping help taking some of the RF power emitting vertically to the horizontal radiation. This antenna worked well for many years in a harsh environment. - a vertically polarised UHF Yagi antenna. High Performance reliable collinear J pole design encased in durable fiberglass. VHF/UHF Beam Antennas. Outside will give the best performance. The design is by John VK2ZOI, who has excellent documentation and a step-by-step construction guide on his website here. SC320 Collinear omni antenna, 10 dBd gain, 406-480 MHz. Construction Notes on a WA6SVT Coaxial Collinear Antenna thus the antenna ends up right on the design frequency after the tubing is put on. The original antenna obtained with the ADS-B receiver AirNav( RadarBoxPRO is so great product that it is hard to build a better home made omnidirectional antenna with a higher gain than the original one. The antenna is terminated with a recessed type N female at the base and has a 24 inch RG-213 jumper supplied with type N. Features: • Patented PCB based Meander™ collinear design offering the ultimate in pattern and gain stability. Construction. 11 operation. Â The diagram provided is a more simplified version of the one I did. Gain DESIGN FEATURES: AC9 -450 Omni directional Collinear Antenna is rugged all weather model uses high class brass and 6063T6 ultra corrosion resistant aluminum alloy and. 349 m) long portable antenna for 2 M VHF-UHF Portable Yagi-Uda Antenna Design 2 Meter Beam Antenna. The 1λ/4 wave ground plane antenna has the advantage of being a simple antenna with predictable performance. Making an inexpensive 1090MHz ADS-B collinear antenna The guy in the vid makes it look very simple. Calculate the required dimensions for a coaxial collinear antenna construction for any given frequency. The UHF Collinear range of collinear antennas has been re-engineered and features higher power ratings and improved construction. It only makes sense to do that since a collinear array for HF would be really big. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. I'm working on a vertical antenna for VHF/UHF. Find UHF Coaxial Collinear Antennas related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of UHF Coaxial Collinear Antennas information. These dipoles are parallel and collinear with each other. Therefore we will need any of the following types of antennas: - A high gain V/UHF collinear antenna, in the UHF band must have between 11 dB and 13 dB. 18 VHF/UHF Transmitting and Receiving Antennas 339 19 Microwave Waveguides and Antennas 369 20 Antenna Noise Temperature 417 21 Antennas for Radio Astronomy 421 22 Adjusting, Installing, and Troubleshooting Antennas and Transmission Lines 433 23 Antennas for Radio Direction Finding (RDF) 439 24 Impedence Matching in Antenna Systems 457. ANTENNA BASIC CONCEPTS. The higher gain antennas have a lower vertical beamwidth. Not bad but a 7' antenna isn't that long. The altitude above sea level is 867 meters or 2845 feet. A rotor positions the antenna between NH and Boston stations. 5/8 VHF Collinear antenna. 4Ghz Low-Power 5dBi Vertical Collinear Antenna for 802. The UHF Collinear range of collinear antennas has been re-engineered and features higher power ratings and improved construction. Lens - a lens antenna consists of layer of dielectric or a metal screen or multiple waveguide structure of varying thickness in front of a feed antenna, which acts as a lens which refracts the radio waves, focusing them on the feed. Introduction: A collinear (or co-linear) antenna array is an array of dipole antennas mounted in such a manner that every element of each antenna is in an extension, with respect to its long axis, of its counterparts in the other antennas in the array. The signal pattern from such antennas tends to be disk-like in a horizontal omnidirectional pattern, 360 degrees around the antenna. Xtreme Signal HDTV 4 Bay Bowtie Outdoor TV Antenna 45 Mile VHF/UHF (HDB4X) The HDB4X is a small antenna that packs a big punch! This low-profile, four-bay outdoor TV antenna pulls digital broadcast from up to 45+ miles away. The proprietary design yields an elevation beam which points upwards at 5 degrees independent of frequency. Two models are offered according to gain and coverage requirements. Sounds complicated, but it really isn't. + Pro-Am Collinear Gain UHF Antenna PUB470 470-494 MHz New. The only reasonable cable I could get my hands on was RG-213 from Maplin. antennas for vhf and uhf radio bands is a curation of 129 resources about , Copper Cactus Single Coax Feed, 5 elements DK7ZB Yagi for 70MHz, ZigZag Antenna - VHF/UHF unconventional antennas, Compact and effective 2m 70cm antenna, J-Pole Antenna for your Packet Radio Station. Direct N Female connector. Access This Document. I then found a coax only design for 444Mhz that was based on the same idea. SEC Antenna uses the very latest design and manufacturing technology methods to produce Omni-directional Fiberglass Collinear antenna, having following features: Innovative design for unique quality of omni-directional monopole antenna. I do have a small amount of the RG6 cable being used in the vid (he could do with a good kleenex tissue for his nose too so I hope the antenna performs better than his snoz) and I'm thinking I may try to make one of these antennas just to see if. His design only covered a part of UHF band.