5 8 Wave Collinear Vertical Antenna















5/8 VHF Collinear antenna. Our fiber glass collinear antennas uses multiple vertical radiating elements, stacked vertically, fed in-phase to increase the gain of omni. 5/8 Wave over 1/2 wave 5. There is actually a middle phasing section, the brings both 5/8 wave elements in phase electrically. You have seen them in catalogs for $150 to $250. Homemade ADS-B Collinear Antenna. Some RG-8 and RG-213 guts will sleeve into the 5/16" tubing very nicely. 4GHz vertical collinear omnidirectional antenna 6dB colinear VHF antenna Building details of a VHF colinear antenna with 6 db gain 5/8 Collinear antenna A 5/8 wave stacked j-pole antenna plan Build A 9dB, 70cm Collinear Antenna 70cm, Collinear Antenna From Coax. The 5/8th wave antenna has a net loss over a vertical dipole when both antennas are located far above earth. The double 5/8 is a co-axially fed variation of the 1¼ wave (vertical) dipole shown in the adjacent diagram. The LPH-27A provides excellent reliability in medium range sky wave circuits. 5 dBi of gain. Watch Queue Queue. Looking at the middle sections first, they are 4. For a horizontally-polarized antenna, the H-plane usually coincides with the vertical/elevation plane. A full sized ¼ wave antenna will sometimes outperform, in the real world, a reduced size 5/8 wave antenna, despite the fact that the 5/8 wave has a theoretical advantage. A 5/8th wave radiator, which developes gain when placed over an infinite ground plane through ground reflection image, is also a collinear. 64 wave length elements fed in phase. Since this Not so much antenna types as antenna features, Fetch Full Source. The antenna consists of a 16. Collinear Phased 5/8-wave with two coaxial chokes to suppress cable radiation. The Franklin Array exhibits good gain (~4. The new G-3x5/8, 2m antenna is a collinear 3 x 5/8-wave omnidirectional vertical antenna for the144 -148 Mhz Amateur band. 5/8 Wave over 1/4 wave 5. 625-Wave, White Finish More Buying Choices $232. 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. vertical antennas allow you to achieve the strongest possible presence at your power level and be competitive. 2 Meter Collinear Antennas Documents > - Latest 2 Meter Collinear Antennas 1040 es tax form 2011 1978 physics b answers 1982 fleetwood prowler owners manual 898632 4 wheel turf gasoline. Loaded antennas. So if the receive station noticed 5 S units on your transmission, did your receive increase by 5 s units?? Homer you know what you are doing, you a home brewer of antennas and have in-depth knowledge of antenna theory. Built my first antenna and doubled my coverage. Double 5/8 Flower Pot Antenna. We have talked to stations over 40 miles away using this antenna up about 30 feet high, running a mobile rig for a base. Digital Antenna Antenna Collar Digital 10db Ant Vhf 532-vw-rs Digital Rupp With 16' Digital Antenna. 5/8 Wave antennas Very common for VHF/UHF The 5/8 wave antenna consists of a vertical radiator, a loading coil and colinear plane at the base of the antenna. 5/8 wave J-pole antenna for 145 MHz. I have tried out different wire sizes,number of turns and diameters and I have got good results on the swr meter but when the antenna is up and compared to a folded dipole at the same height the 5/8 is down at least 5 or more s-points. 6m 5/8 Wave Vertical Ground Plane Specifications 6MU Vertical Antenna The Super J-Pole Antenna(Collinear Design). 5λ/8 vertical antenna gain. The current configuration of this network is shown in Figure I. The 5/8th wave antenna has a net loss over a vertical dipole when both antennas are located far above earth. The 5/8 wave antenna consists of a vertical radiator which is fed at the base of the antenna. power handling 3kw cw,6kw ssb. 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. Making an inexpensive 1090MHz ADS-B collinear antenna The guy in the vid makes it look very simple. Antenna & Wave Propagation Antenna Array Prepared By- Raj Kumar Jain Page 5 Fig. Gain of a Collinear Antenna Array - Duration: 8:05. The Amazing Quality Shakespeare 5225-XT 8' VHF Antenna- The Amazing Quality " Shakespeare Galaxy Style 5225-XT 8' VHF 6dB Gain Collinear-phased 5/8 wave elements EXTRA TOUGH! Shakespeare's best 8', 6dB Gain antenna. It is possible all the hype over 5/4 wave antennas is reinforced by the fact they will still work with weak gain tricking the user into thinking it is a superior antenna just because it has 5/4 wave in its title. Quarter Wave Whip Assembly: The 1/4 wave whip assembly slides over the end of the last element of the antenna. Anyway, digging back, I found that there was an antenna called the "Collinear-Coaxial vertical" in the 1974, 13th edition of the ARRL antenna book, page 248. vertical antennas allow you to achieve the strongest possible presence at your power level and be competitive. Peak gain is usually on the horizon. This both doubles the collinear's gain and improves the antennas pattern with an improved low angle of radiation. At 1090 MHz, a 1/4 wave antenna will be tiny with a vertical element of a mere 2. com in 3 categories. This calculator will help you to calculate the different wavelength of antennas based on the frequency. An antenna (10), illustrated in FIG. stacked on top of each other separated by a phasing. Comes complete with tuning network and fold over mount. The book says the two stacked 1/2-wave collinear elements provide about 6 dB gain over a 1/4-wave whip antenna and about 3 dB gain over a 5/8-wave antenna. Let us help you out with understanding gain. Antenna Theory Analysis and Design, 3rd Edition by Balanis. All the competition has to offer is unity gain at best per antenna bay and half of that on all CP models. This OM used a half-wave vertical at 20 m high. 625 wavelength long are also popular, because at this length a monopole radiates a maximum amount of its power in horizontal directions. A half-wave dipole the most common type, has two collinear elements each a quarter wavelength long and a gain of 2. Hard to construct matching coils are normally needed as well as hardware and tubing which can be difficult to find. "The antenna above produces an overall gain of 14. Extended double Zepps and two half waves in phase are examples of collinear arrays. 131 - Coax-Cable Collinear Antennas. It comes with integrated BNC coaxial contact. Contact one of your local Diamond ® Dealers for current price & availability. The antenna is tuned to a frequency, so just "making it longer" would take it OFF TUNE and weaken the signal, or mess up the directionality. 64 wave antenna's matching network is designed specifically to be resonant as a. For most people the Maco V 5/8 antenna is going to offer more bang for your buck, while antennas such as the I10K generally appeal to the more serious CB'ers or people needing an antenna to handle 100 MPH winds and 10,000 watts of output (the Maco V 5/8 is rated up to 1,200 watts - for those needing higher power capacity in the Maco line. or even higher. Today, I finally built a ½ λ dipole for 4m. 5/8 wave J-pole antenna for 145 MHz. For maximum power transmission, 50 Ohm coax cables are used to match the RF PA's output impedence. The Wire Size can range from 16 AWG to 12 AWG. The 5/8 wave antenna consists of a vertical radiator which is fed at the base of the antenna. waves) that are 5/8 of a wavelength long, arranged in a collinear or stacked configura-tion. The higher gain antennas have a lower vertical beamwidth. 900MHz collinear wave dipole antenna with RPSMA connector. These are FULL SIZE, quarter-wave vertical antennas that deliver fantastic specs and the highest possible performance at a price that can easily be justified Find DX Engineering…. Harsh environments do not affect mechanical or signal integrity. The measurements below are for building a simple Dipole Antenna. Vertical beam downtilt can also be applied into the calculation and construction of the antenna. As I mentioned in post #2 of this thread, 'gain omnis' such as collinear and 5/8 wave verticals achieve gain by focusing on the horizon more than the shorter and simpler 1/4 wave over ground plane vertical antenna. Often bought by those who have a 1/2 wave vertical but want to put more effort in the antenna system. This antenna can handle up to 200 watts. 6: CP8040: 80m/40m HF Antenna:. 5 ft) long, is needed. A travelling wave antenna produces no standing wave, as discussed previously. A full sized ¼ wave antenna will sometimes outperform, in the real world, a reduced size 5/8 wave antenna, despite the fact that the 5/8 wave has a theoretical advantage. Full Wave Loop Antenna 10M thru 80M G5RV Multi-Band Antenna by Louis Varney Hex Beam 20 thru 10M-- From K4KIO IK-STIC-- multi-band vertical dipole antenna used for quick set-up and quick band change -- From W2IK IK-STIC 2 vertical, all band, antenna, 25 feet tall, under 5 pounds! With a tuner covers the amateur radio HF bands from 40 - 10 Meters. The antenna will lift up and out of the socket all by itself at highway speeds! The antenna is unusable when it is laying down and most users need to defeat the hinge or constantly adjust the angle to keep it vertical. On-line antenna designer. These DX Engineering 68 ft. G5RV Mini Multi-Band Antenna Band coverage: 14-28 MHz Length: 25 feet 6 inches Matching section: 8 ft (ladder) The antenna is supported with rope or other non-conductor. Most often, antenna gain is described as compared with a half wave dipole, but in this case I will use the quarter wave ground plane as a reference to zero gain as we are talking about vertical omni antennas. Magnet mount holds to 85 mph. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. See Figure 4 for exact measurements. How does this design compare to other 20 meter vertical antennas? The table below shows a comparison of what you might expect with other architectures. It is designed to have extra long range communications, due to its very low angle of radiation. Measures 22 foot, 9. The average height of the collinear is about 2 meters higher, compared with a single 1/2 wave, so this will also play a part. The transmitter has an adjustable SWR warning threshold from 2. Go as far as the next paragraph, BUT, DON'T ADD ANYTHING TO THE BOTTOM YET! Now its time to add the additional elements to the top and bottom of the collinear array. Antenna Theory - Radiation Pattern - Radiation is the term used to represent the emission or reception of wave front at the antenna, specifying its strength. AWESOME ANTENNA!!!!! Sirio Gain Master 5/8. 1 800 ANTENNA 63 NOTE: Antennas are not to scale UHF 406-512 MHz Base loaded 5/8 wave 3 dB UHF antenna with integrated spring, 406 - 512 MHz. 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. Phased 5/8 wave over 14/ wave design. It's also referenced in the Oct. 5 to get the transmitter to stay transmitting. RDE5488A 450-470 MHz 5dB 5⁄8 Wave Closed Collinear. Construction time can take as little as a few days up to a few weeks, depending on your drive and. Built my first antenna and doubled my coverage. The 6dB Base Station Antenna is internally constructed using aluminum & Copper/Polyethylene conductors in a stacked element 5/8 over 5/8 Wave collinear configuration and is house in a robust, one piece, tapered cylindrical fiberglass radome. Many of the vehicular antennas at VHF high-band are quarter-wave monopoles. So if the receive station noticed 5 S units on your transmission, did your receive increase by 5 s units?? Homer you know what you are doing, you a home brewer of antennas and have in-depth knowledge of antenna theory. The WB3AYW MULTIELEMENT COLLINEAR ANTENNA. YET another antenna basics question - posted in Technical Discussion: Thanks in advance for your help and patience. 5 dB Collinear/Closed MUF4065(S) 406-430 MHz 5 dB Collinear/Closed MUF4505(S) 450-470 MHz 5 dB Collinear/Closed. Diamond ® Antennas are sold through authorized dealers. This link is listed in our web site directory since Saturday Feb 17 2007, and till today "5/8 Collinear antenna" has been followed for a total of 58981 times. The new 5225-XP is a maximum range antenna built in a Shakespeare extra tough fiberglass radome. 1 800 ANTENNA 63 NOTE: Antennas are not to scale UHF 406-512 MHz Base loaded 5/8 wave 3 dB UHF antenna with integrated spring, 406 - 512 MHz. Simple, easy antennas are a smart start. 4dBd 5/8 Wave over 5/8 Wave over 1/4 wave 7. 0dBd 5/8 Wave over 5/8 Wave over 1/2 wave 7. This type used by many, It has deserved a name on the DX-antenna list over the last years. Half-wave and 5/8 wave monopoles also are used, but they require some sort of matching network (i. Door het juiste LC netwerkje (2x C en een L)  te plaatsen is het mogelijk een dipool antenne voor 2 frequenties te gebruiken. The more 1/2 wave sections you use, the more gain you get. a) 10 foot length of #8 copper wire (#10 will work, too) b) 26-inch piece of RG-58 coax c) A length of any type 50-ohm coax long enough to go from the antenna to your radio. 4Ghz Vertical Collinear Antenna for 802. If not, trim or add to the 1/2 wave section(s). After soldering all sections and balun stub together, test SWR with an antenna analyzer or transmitter and SWR meter. This link is listed in our web site directory since Saturday Feb 17 2007, and till today "5/8 Collinear antenna" has been followed for a total of 58981 times. 7) CUSHCRAFT A627013S - 3 Elements 6m/2m/70cm Triband Yagi Antenna 8) CUSHCRAFT AR270 - Dualband Vertical 2m/70cm 3,7/5,5dB Homebrew Hf Vertical Antenna Diamond GAP beer Cushcraft Belden Tram HF Ranger SSB Palomar Texas Star Heil microphones vertical cubical quad antenna 70cm 4 ELEMENT UHF YAGI ANTENNA. , inductors and/or capacitors) in order to match the antenna impedance to. 10 gauge enameled copper wire is used in the RF transformer wound for maximum efficiency on 6 meters. Collinear Antennas. Heavy duty trunk lip mount features 180 degree swivel ball for vertical positioning. This article describes a collinear antenna made from very inexpensive RG58/U coaxial cable and encased in PVC pipe. Vertical beam downtilt can also be applied into the calculation and construction of the antenna. 500 Watt enclosed coil and 2 sets of 1/4 wave radials which provide complete mast decoupling and optimum pattern and gain. Omni Antenna, Full Wave Dipole, 1. net is a Web site dedicated to ham radio (amateur radio). VSWR is a function of the characteristic impedance of the transmission line and the impedance of the antenna. 8 = 11 cm Tests Results for these antennas WITH Amplifier will be posted when completed. 132 - Double Bobtail Antenna for 20m. 1984 QST, page 39. CO LINEAR ANTENNA DESIGN While it is not possible to home-brew a commercial quality antenna, it is very feasible to build a collinear antenna for average use. Electrical specifications: Design Collinear 5/8 l wave phased brass elements. 5/8 Wave over 5/8 Wave over 1/2 wave 7. The Hustler CGT-144 is a 2 meter collinear mobile antenna providing a big 5. vertical antennas allow you to achieve the strongest possible presence at your power level and be competitive. These DX Engineering 68 ft. 01 Jan 2015 1-LOOKING AT THE ANTENNA WE COULD DESCRIBE IT AS: In the centre we have a 3/4 wave long conductor (some manufacturers speak of a 7/8 wave radiator). jpg: 002-The_Half-Lam 003-Twin-Led_Mar 004-Swallow-Tail. The Wire Size can range from 16 AWG to 12 AWG. (this is a 5/8's wave dipole instead of a half wave dipole, but it requires ladder line and a balun and a tuner to work). 0 GHz 10-Section Collinear; Full Wave Dipole;. Optimum low angle radiation pattern. Peak gain is usually on the horizon. Gain is typically 5 dB when mounted on a suitable ground plane. 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. A ¼ wave ground plane CB antenna made from wire can be suspended from a tree. This fantastic true full-size 5/8 Wave 10 / 12 Meter vertical antenna from Hy-Gain was a legend in the 70's. Handles 500 Watts. Optimum low angle radiation pattern. It is a broadband Omni S band antenna that operates at 1. 8 - the power supply point. 80 m heeft op 50 Mhz een impedantie van ca. The W5GI Multi-band Mystery Antenna is a fundamentally a collinear antenna comprising three half waves in-phase on 20 meters with a half-wave 20 meter line transformer. Most often, antenna gain is described as compared with a half wave dipole, but in this case I will use the quarter wave ground plane as a reference to zero gain as we are talking about vertical omni antennas. Comes complete with tuning network and fold over mount. 6dB COLLINEAR VERTICAL 430-450MHz G-6440 440 MHZ BASE 70cm ANTENNA :. A 5/8 wave provides a style of vertical radiation pattern which doesn't offer energy in some of the mid- upper angles but compresses that 1/4 wave donut like stepping on it, to being flatter but WIDER. This antenna does not need a ground plain but one can be added if you want to. A full sized ¼ wave antenna will sometimes outperform, in the real world, a reduced size 5/8 wave antenna, despite the fact that the 5/8 wave has a theoretical advantage. In the case of a radiating antenna, a guided wave with amplitude a is traveling. 1 dB over a dipole at optimum height. The V-4s features two sets of % wave radials which properly decouple the lower % wave radiator from the mast. Hustler RX-440 440 MHz. 134 - Taylor Vee Antenna for 20m. 5λ/8 vertical antenna gain. 25 feet 3 inches, UHF female connector. This is Shakespeare's Galaxy® Style 5225 in a stronger, stiffer radome. Als voorbeeld een 50 Mhz band dipool, die ook op 70 Mhz bruikbaar is en daar een goede SWR heeft. Base radio antenna - Sigma/Alpha 5/8 wave, 5 DB gain, 24' length, Aircraft aluminum construction, 25 to 32MHz tunable, 1500W power handling, 2 U bolts & clamps included for mounting to mast. Regular 5/8 wave verticals do indeed have a bit more gain at low angles, but in most cases it's only a couple dB and the higher angles aren't really impacted until you get pretty darn high, above 30 degrees. Constructing the collinear. RDE5488A 450-470 MHz 5dB 5⁄8 Wave Closed Collinear. A travelling wave antenna produces no standing wave, as discussed previously. Vertical radiation pattern typical of so-called "3-dB" marine vertical antenna. 5/8 VHF Collinear antenna. The most common dipole length is half the wavelength. n 8/2 n 8/2 n 8/2 or VERTICAL (Elevation) HORIZONTAL (Azimuth) 3-3. The Electric field or E-plane determines the polarization or orientation of the radio wave. 68 Digital Antenna 532-vw-rs Digital Vhf 16ft White For. 26-33 Mhz 5/8 Wave Vertical Antenna with Ground Plane - 5000 watt power handling capability. This article describes a collinear antenna made from very inexpensive RG58/U coaxial cable and encased in PVC pipe. Peak gain is usually on the horizon. This month I decided to build a 2 meter 5/4 wave antenna. Often bought by those who have a 1/2 wave vertical but want to put more effort in the antenna system. The 5/8 wave antenna also has a net loss over a λ/4 (quarter wave) ground plane with drooped radials. 6dB COLLINEAR VERTICAL 430-450MHz G-6440 440 MHZ BASE 70cm ANTENNA :. com Sigma 4 1. The antenna pattern is a graphical representation in three dimensions of the radiation of the antenna as a function of angular direction. After a few months of pondering how to build a simple pull-up vertical collinear antenna, I think I've finally got it! The motivation for such a design is the fact that I have tall trees for a support and can actually pull such an antenna up into the trees to 100 ft. The double 5/8 is a co-axially fed variation of the 1¼ wave (vertical) dipole shown in the adjacent diagram. Louis further states that, "In contradistinction to multiband antennas in general, the full-sized G5RV antenna was NOT designed as a half-wave dipole on the lowest frequency of operation, but as a 3/2-wave center-fed long-wire antenna on 14 MHz, where the 34 ft open-wire matching section functions as a 1:1 impedance transformer. Shakespeare 5/8-Wave VHF Antenna 9 Feet 6 Inches (399-1M) The Shakespeare Style 399-1M VHF 6dB Collinear Phased 5/8-wave antenna has two coaxial chokes to suppress cable radiation. All the competition has to offer is unity gain at best per antenna bay and half of that on all CP models. But unbalanced antennas, like the vertical 1/4 wave, 5/8 wave, and collinear styles do need a ground plane to function properly. If the eight ½ wave coaxial elements result in an antenna too long for your liking (over seven feet), then it is okay to use four ½ wave coaxial elements but the SWR may be slightly higher (Attach four ¼ wave vertical ground radials at the antenna feed point to help lower SWR. The approximate gain in the H-plane of the Slim Jim is from 1. The 5/8th wave antenna has a net loss over a vertical dipole when both antennas are located far above earth. There is actually a middle phasing section, the brings both 5/8 wave elements in phase electrically. I'd be interested to hear if your coverage in the obstructed direction improves with the shorter antenna. It's extra strong…sturdy enough to be self-supporting, even in high winds and high speeds. Many of the vehicular antennas at VHF high-band are quarter-wave monopoles. Peak gain is usually on the horizon. There is no collinear mobile design for HF frequencies due to the extremely large components necessarily that make a mobile design impractical. power handling 3kw cw,6kw ssb. 5:1 or better over the entire band. Determine the length of the ½ wave elements using the formula:. THE 5/8 WAVE VERTICAL. The 5/8 wave antenna consists of a vertical radiator which is fed at the base of the antenna. Double 5/8 Flower Pot Antenna. This does NOT take into consideration the type or size of horizontal reflectors, of even if there is a need for them. Handles 500 Watts. Phased 5/8 wave over 14/ wave design. However in broadcasting monopole antennas 5/8 = 0. Vertical Omni Antenna, 2 Section Collinear 5. The most common form is the quarter-wave monopole, in which the antenna is approximately one quarter of the wavelength of the radio waves. com: 5/8 Wave Collinear Vertical FM Antenna: Electronics. Contact one of your local Diamond ® Dealers for current price & availability. Over-size item. Radiating elements are made of brass. Watch Queue Queue. Four common styles are: 1) 5/8 over 1/4: The top element is 5/8 wave and the bottom element is 1. The double 5/8 is a co-axially fed variation of the 1¼ wave (vertical) dipole shown in the adjacent diagram. "The antenna above produces an overall gain of 14. 8 dB (half power) compared to a quarter-wave vertical antenna. Most often, antenna gain is described as compared with a half wave dipole, but in this case I will use the quarter wave ground plane as a reference to zero gain as we are talking about vertical omni antennas. -Connect a SWR meter to the antenna and to the radio, making sure you attached it to the right connector posts-Take a SWR reading, and if it is beyond 1. 5 ft) long, is needed. Download with Google Download with Facebook or download with email. The 5/8 wave antenna also has a net loss over a λ/4 (quarter wave) ground plane with drooped radials. 5 Db), and delivers better than average signals, even when hung at only a quarter wavelength (low). Place a 1:1 Balun on the Antenna end of the Feedline. Calculate the required dimensions for a coaxial collinear antenna construction for any given frequency. 2 Meter vertical with 3 dBd gain derived from the famous extended double zepp antenna design. A 5/8 wave provides a style of vertical radiation pattern which doesn't offer energy in some of the mid- upper angles but compresses that 1/4 wave donut like stepping on it, to being flatter but WIDER. I dipoli possono essere montati rivolti tutti sullo. A professional quality antenna in a compact package. Requiring a new 2 metre band antenna for local FM simplex and repeater communication and after evaluated a couple of the main contenders for the project I settled on the 5λ/8 wave ground plane to be designed for approximately 146. Brass and copper elements. A full sized ¼ wave antenna will sometimes outperform, in the real world, a reduced size 5/8 wave antenna, despite the fact that the 5/8 wave has a theoretical advantage. Loaded antennas. Radiating elements are made of brass. 4 dB gain over a dipole. For most people the Maco V 5/8 antenna is going to offer more bang for your buck, while antennas such as the I10K generally appeal to the more serious CB’ers or people needing an antenna to handle 100 MPH winds and 10,000 watts of output (the Maco V 5/8 is rated up to 1,200 watts - for those needing higher power capacity in the Maco line. The V-6R antenna is based on 2 collinear 5/8 wave radiators. The Matching Section is 450 Ohm Open Wire Feedline and is a compromise impedance between the 5/8 Wave antenna elements and the feed point, A 4:1 Current Balun. Collinear describes two or more things arranged in a straight line. Gain: 5 dB. The 5/8 wave antenna consists of a vertical radiator which is fed at the base of the antenna. 2 Meter vertical with 3 dBd gain derived from the famous extended double zepp antenna design. Directivity 3. You have seen them in catalogs for $150 to $250. power handling 3kw cw,6kw ssb. The 5/8 wave antenna consists of a vertical radiator which is fed at the base of the antenna. A matching device of some sort must be added between the antenna and the feedline if you wish to feed it with coax. Collinear phased 5/8-wave with two coaxial chokes to suppress cable radiation. It is constructed of marine grade, low corrosion,. The free space gain is 2. Advertisment has always pushed the 5/8 antenna, costs more, but in conclusion note these vertical raditation patterns; the 1/4 wave has a noticable null spot directly on top of the antenna (off the end) straight up as it were, where the 5/8ths has even worse radiation upward, but more at a right angle. Im trying to build a 5/8 wave antenna out of an old CB antenna for the VHF band the problem is I cannot find out how to calculate the coil dimentions. Other lengths are also used. Collinear-phased 5/8 wave elements For the toughest of the tough jobs, Shakespeare introduces the extra edge of silver plated elements on world-renowned, world class, Galaxy marine VHF antennas. The whip is cut to a true ¼ wavelength (no velocity factor correction) and is made out of number 12 wire or 1/8" brass rod. It's a must to check the SWR when done. This item is currently out of stock. 8 GHz / WiFi. Would a groundplane help a collinear??? Nice thing about a 5/8 wave antenna is that if it doesn't work, you can always cut it down (ground plane/spider, that is). VHF and UHF Antenna Systems 18-21 Fig23—These drawings illustrate the dimensions for the 144-MHz ground-plane antenna. The 5/8 wave antenna consists of a vertical radiator which is fed at the base of the antenna. Includes 15' of coax. You can build an active antenna for just a receiver or use an LC network to tune a shorter wire but it will be compromised in ability. Norwalk Electronics guarantees no single other 6 meter omni directional antenna in production can outperform this 5/8 wave. 64 somewhere above it's designed resonant frequency and may even go beyond the. Vertical radiation pattern typical of so-called "3-dB" marine vertical antenna. There are a number of commercial verticals that probably fit somewhere between the 30 m high elevated dipole and the 5/8 wave ground plane antenna. jpg: 002-The_Half-Lam 003-Twin-Led_Mar 004-Swallow-Tail. For most people the Maco V 5/8 antenna is going to offer more bang for your buck, while antennas such as the I10K generally appeal to the more serious CB'ers or people needing an antenna to handle 100 MPH winds and 10,000 watts of output (the Maco V 5/8 is rated up to 1,200 watts - for those needing higher power capacity in the Maco line. question for you?according to a frequency wave calculator for 5/8 wave length on 27. However, a. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. (Mast not supplied). Tram 1154 Black VHF Land Mobile and Ham Radio Magnet 5/8 Wave Pre-Tuned 140-175 MHz Antenna for Motorola Kenwood Icom Vertex Blackbox HYT Hytera Mobile Radios Kit With PL-259. A 5/8 should be paired with a mirror image 5/8 to function properly. In the case of a radiating antenna, a guided wave with amplitude a is traveling. 220 MHz Quickie Quarter Wave Antenna -- From Artsci 220 MHz J Pole Antenna-- From N6ZAV Super J-Pole Antenna (Collinear Design) - By KB0YKI. The most common form is the quarter-wave monopole, in which the antenna is approximately one quarter of the wavelength of the radio waves. The Amazing Quality Shakespeare 5225-XT 8' VHF Antenna- The Amazing Quality " Shakespeare Galaxy Style 5225-XT 8' VHF 6dB Gain Collinear-phased 5/8 wave elements EXTRA TOUGH! Shakespeare's best 8', 6dB Gain antenna. This can be measured for both the vertical and the horizontal beams unless the subject happens to be a collinear antenna where the horizontal beam is circular. Double 5/8 Flower Pot Antenna. the impedance of a /8 antenna is 8 - j500. Often bought by those who have a 1/2 wave vertical but want to put more effort in the antenna system. Enter the required frequency in MHz, the velocity factor of the coax (if known) and antenna designer will calculate the dimensions of the elements as shown below. 4 dBi Gain, 600 W PEP, DC grounded, UHF Female - SO239 antenna connector. The VHF 5/8-wavelength (144 Mhz) vertical monopole has long held the reputation of providing about a 3-dB gain advantage over the 1/4-wavelength vertical monopole. which antenna is better, the i max 2000 or the maco v 5/8 antenna? i know there is a difference in power, one is 1500 watts and the other is 5000 watts. It should be lower than 2, and ideally lower than 1. Antenna Theory - Radiation Pattern - Radiation is the term used to represent the emission or reception of wave front at the antenna, specifying its strength. The buck0 5/8ths wave collinear J-Pole does perform. 2 For an object that experiences a plane wave, the resonant mode is achieved when the dimension of the object is n8/2, where n is an integer. The average 5/8 antenna is ruined by using 1/4 wave radials. The Wave Propagation Laboratory (WPL) has operated a network of wind profiling radars in Colorado for several years. For instance, a half wave vertical can be stated as having 3db of gain over a quarter wave. Door het juiste LC netwerkje (2x C en een L)  te plaatsen is het mogelijk een dipool antenne voor 2 frequenties te gebruiken. An antenna (10), illustrated in FIG. The measurements below are for building a simple Dipole Antenna. 131 - Coax-Cable Collinear Antennas. 485 comes out to 22. The Double 5/8 is a natural extension of the Single 5/8 and uses a 5/8λ element for both the top and bottom radiators. A 5/8th wave radiator, which developes gain when placed over an infinite ground plane through ground reflection image, is also a collinear. > The antenna is actually a 24 foot painter's pole with a fiberglass. zerofive-antennas colossal 10k 5/8 wave antenna 10/11 meters - zerofive-antennas colossal 10k 5/8 wave vertical antenna for 10/11 meters. I have used the Sirio for a few years now with great results, so I decided while I was getting around to fixing it I would try out a different antenna. This company makes brass tube in sizes from 1/16" to 5/8" in 1 foot and 3 foot lengths. ost commercial 2-meter repeater antennas with gain fall into two categories: collinear arrays and stacked element arrays, with gains ranging from 3 to 9 dB1. The Franklin Array exhibits good gain (~4. Antenna Theory - Radiation Pattern - Radiation is the term used to represent the emission or reception of wave front at the antenna, specifying its strength. Collinear-phased 5/8 wave elements For the toughest of the tough jobs, Shakespeare introduces the extra edge of silver plated elements on world-renowned, world class, Galaxy marine VHF antennas. The double extended Zepp is a dipole type Antenna consisting of two collinear 0. Supplied with 17' of top quality low loss coaxial cable (connector installed).