2m Collinear Antenna

139 - Twisted Loop Antenna for 160m. 1296 vertical collinear. Impedance: 50 Ohm. If anyone could either help me or point me in the right direction. Page 1 of 2 1 2 Next > WY4K Ham Member QRZ Page. A 3 dB increase in signal strength is about equal to doubling the. diy collinear base antenna. Quick, easy, and cheap 1090MHz ADS-B antenna Having recently discovered the joys of RTL-SDR dongles, I decided that I wanted a dedicated ADS-B receiver using one. Collinear Antennas A collinear antenna is 2 or 3 radiating elements stacked on top of each other separated by a phasing coil to increase gain 5/8 Wave over 1/4 wave 5. BASE STATION ANTENNAS. 2m / Radial length:approx. Getting Started: First look at my drawing below, and decide how long an antenna you want to have up, approximately. 4dBd 5/8 Wave over 5/8 Wave over 1/4 wave 7. Discussion in 'Antennas, Feedlines, Towers & Rotors' started by KJ4EKS, Jul 23, 2008. Your store only has 0 in stock. 2 MHz vertical 1/2 wave Coaxial Dipole antenna project for your home QTH, SOTA, portable field operations/WICEN exercises or the emergency 2m Go-box. The resulting gain is closer to the optimum 3 dB over a conventional J-pole or halfwave antenna. FYI -- This was (many years ago) for a science fair I entered. May 2, 2019 - 2M ( 144Mhz ) 70CM (430 Mhz) Coax Collinear. Efficient 2 meter Disguise Antenna. Since I like making things, a homebrew antenna was in order. Reduce precipitation static and lower background noise with the Tram Amateur Dual-Band Antenna. 9dBi on 2m and 11. DIAMOND ORIGINAL X 30 N 2M 70CM DUAL BAND COLLINEAR ANTENNA PMR X-30 965 MHz Fiberglass Collinear Antenna New listing 450-470 3. The classic Collinear Array consisting of two ½ wave radiators in phase is an antenna that exhibits some degree of gain (~1. 75 wave length). Collinear 5/8-Wave Omni Antenna for 2 Meters. Click Photos below to see full page: Our Halfwave over a. The antenna was originally designed in 1946 when the number of bands was much less than it is now. This type of antenna has an enhanced gain and directivity in E-plane. the guiding principle is that we have multiple 1/4 wave elements fed in series , the radiation from each adds in phase to produce a large vertically polarised omni-directional antenna. Collinear Antennas A collinear antenna is 2 or 3 radiating elements stacked on top of each other separated by a phasing coil to increase gain 5/8 Wave over 1/4 wave 5. Collinear 2M Antenna 2 meter coax collinear vhf antenna plans this version of a 2 meter antenna are amazing: Collinear 5/8 wave omni 2 meters, WD0O The correlation between the dB and power ratio is dB = 10 log loutput power/input power A gain of 3 dB corresponds to a doubling of power: 6dbi Colinear Antenna for Wireless LAN. HVC14: 20m Loading Coil for HV7A & MV3A. 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. Add to cart. 133 - Collinear Zepp Antenna. However, they are often assembled (power supplies, transmitter, receivers, antenna. Dual Antenna Stacking Boom For A144S5 and A144S10. Outdoor range tests show significant gain over rubber duck Antennas. A collinear two-element antenna, using half-wave dipole elements, has 3dB gain over a single dipole when dipole current maxima spacing (S) is. 同軸コリニアアンテナ設置工事完了 そのプロジェクトは2017年2月にはシュンセツ船へのアンテナ設置、5月には基地局へのアンテナ設置が完了した。. 5 dB increase in gain. Fast & Free shipping on many items!. The M124-1 is a fiberglass 1/4 wave antenna suitable for all air band applications on a 5/16" fitting. Both dipoles and quarter-wavelength monopoles have an. Dihedral form is most popular in this type of antenna reflector. View the manual for G7144 Seven dB maximum effective gain provides more consistent pattern, even in marginal areas. Smiley Antenna is using a newly designed flex coil matching network. 2m Marine VHF Antenna As with most Marine VHF aerials designed for mast top mounting, the aerial came with 18m of downlead moulded into the base of the aerial. Hard to construct matching coils are normally needed as well as hardware and tubing which can be difficult to find. The VHF Collinear range of collinear antennas has been re-engineered and features higher power ratings and improved construction. there are several methods ot INDUCTIVE. Marine 155 - 159 MHz Land-Mobile and Scanner J-Pole Antenna. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. Homemade Coaxial Antenna Cable: Hello yet again readers!today i'll be showing you how to make some really simple homemade coaxial cable, for FPV antennas n' stuff. This is a rigid antenna, and has a Patented impedance matching arrangement at its base. 5-30 MHz Screwdriver Antenna Also Avaliable in 3/8x24 Connector. 138 - Sloping Diamond Antenna 4dB-Gain for 40m. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. Stacked Element. 9 out of 5 stars 4 HYS 2m/70cm Gooseneck CS Tactical 11. Larsen - 806-866 MHZ 4. Side Mount Boom for A430S10 and A430S15. 5:1 / Rated wind velocity:40m/sec, Mast diameter accepted:30mm to 62mm(More than 45mm diameter mast is recommended) / Connector:M-J(X700H),N-J(X700HN) Type:4x5/8wave C-Load(144MHz),11x5/8wave C-Load(430MHz),FRP outershell. Accepts mast diameters from 1. I decided to start this thread to find out the truth. diamond original x-30 n 2m 70cm dual band collinear antenna pmr 446 pmr446 More buying choices £55. 1296 mhz collinear antenna with coax. Homemade Coaxial Antenna Cable: Hello yet again readers!today i'll be showing you how to make some really simple homemade coaxial cable, for FPV antennas n' stuff. The V2000 is a vertical collinear triple-band antenna which claims 8 dbi gain on 70 cms, 6 dbi on 2m, and 2 dbi on 6m. 2 METER/440 DUAL BAND SLEEVED DIPOLE MODIFICATION BY W7LPN Rick Frazier The photo above is of my balun modification of the QST August, 2006 page 50, 2 Meter/440 dual bander sleeved dipole by Geoff Haines, N1GY. 2m 5 8 Wave Antenna. The collinear antenna was made from 6 segments of RG6, cut to 15cm lengths with ~2cm of wire exposed at each end of the segments. Lost some blood scouring the inside to get a good electrical contact between the shielding of the (2m RG6U)) coax and the can. If you decide to make a 2m antenna, you’ll end up with 1. By John Portune W6NBC. The Antenna Farm : 2 Meter High Gain 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 Connectors Aviation Radios Repeater Systems Towers & Accessories Duplexers Diplexers & Triplexers VHF & UHF Base Stations Base. Bend a third right angle in the same direction 1˝ from the second right angle. 2 models of some variations on the traditional Franklin form of the antenna. The vertical collinear antenna design transformed from the theoretical pair of phased dipoles a), into a pair of dipoles driven in series from a single source and phased with a section of transmission line b), to finally c), the practical design that uses the outer conductor of the feed lines as the lower three radiating elements of the antenna. Side Mount Boom for A430S10 and A430S15. Double 5/8 Flower Pot Antenna. At this time the antenna is only constructed for 2m. 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. The SWR is 1:15:1 at resonance and the bandwidth is 6 MHz (@a. As the bandwidth of this antenna is rather small, the same antenna will not work on both bands simultaneously--- it must be built for one or the other. Versions that he has built include 2M, 220, and 440 models, all for FM voice repeaters. This is the reason the antenna is nearly 50' tall! Click here to see a Big Hair and IMAX 2000 Antenna Comparison: CB Base Antennas. • If the antenna is to be placed outside, do not use brass. A coaxial collinear antenna for 70 CM this coaxial collinear antenna was built to test for my own consumption whether or not this antenna method actually works. DIAMOND X-30PL Dual Band Vertical 2m / 70cm. The gain figures are 7. 2 meter collinear mobile antenna. Amateur Mobile Antennas The Hustler CG-144 is a 2 meter collinear mobile antenna providing a big 5. View our Easter Catalogue and Enter the competition for a chance to win Easter Essentials. Build A 9 dB, 70cm, Collinear Antenna From Coax Posted on Saturday, May 21, 2011 • Category: Antennas Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna. 700~900MHz UHF Band. NEW Amateur Ham Radio Workman UVS-300 144 / 440 MHz Dual Band Base Antenna 3. DBJ - UHF +5dB Gain Antenna - US patent 8,947,313 +5dB gain no radial collinear - featured in CQ magazine (Summer 2012) $40. The collinear antenna is designed to be mounted vertically. 8 dB), and delivers better than average transmitted signals even when installed at only ~¼ wavelength above ground, and is directly-fed with any length of 50-Ohm coax. The Collinear 2M 70cm seems to be working very well. 9) in the CW portion of 20m to obtain a 50 Ohm match using my MFJ-259B Antenna Analyzer. My friend, 9W2AZV gave me the drawing for this 2 meter antenna, I haven’t tried building it yet. Because a collinear antenna is hot with RF along the shield of the coax, it is necessary to prevent the RF from coming back through the coax. Accessories - please email or call so we know exactly the adapter you need. The pure 50 ohm coaxial collinear antenna. 5dB * Power 200W * Type 2x5/8 * Length 2. Most stations are using an antenna-mounted preamplifier with 1. Mobile 2 Meter Antenna. home antennas vhf antennas 150-170 mhz hustler - 7'-1" tall 142 - 149 mhz 2 meter collinear 5/8 wave, 5. 2 METER SSB SQUARE LOOP From N4UJW 2m Quagi By W5UN 2M Yagis a Bunch-- From The Antenna Elmer 2M Quadix-- from Ross W1HBQ 2m 8db collinear for portable use. Works on HAM VHF/UHF, MURS & FRS SER Plan Compatible MAY Need Tuning. 700~900MHz UHF Band. 95 hot this week in 2 70 antenna. This antenna delivers good performance and has a respectable SWR curve over the entire 2 meter band. Ultra-rugged, high efficiency. HVC14: 20m Loading Coil for HV7A & MV3A. Marine 155 - 159 MHz Land-Mobile and Scanner J-Pole Antenna. Page 1 of 2 1 2 Next > WY4K Ham Member QRZ Page. It can produce similar results to a commercial version and be made from scraps of coax. Connector available in both UHF or N. Building instructions for the NEW WB3AYW Collinear Antenna This is for Two Meters only 02/11/2014 the other bands are similar. I then built a cantenna. Antennas 101 Presented by: Eric Webner K4FAN Dave Tyndell KK4LY K4KL Optibeam. 139 - Twisted Loop Antenna for 160m. (Step-by-step instructions with photos can be seen below, following the project description and safety disclaimer. If you want to further tune the antenna, the mounting point of the center conductor has an effect on the rf resistance of the antenna. I wanted to improve my reception on the 70cm band at home and wanted an omni-directional antenna that I could also use on my RV if needed. FYI -- This was (many years ago) for a science fair I entered. I’ve assigned my best minions to fix it up. These antennas are placed on a common line or axis, being parallel or collinear. This antenna is rugged durable in design and features a heavy duty radome for minimum tip deflection. FYI -- This was (many years ago) for a science fair I entered. Andrew ASP705K 450 - 470 MHz fiberglass collinear omnidirectional antenna features of 10 dB gain. 137 – Wire Beam 6dBd-Gain for 10m. Â These are a few of the modifications I came up with. This is a rigid antenna, and has a Patented impedance matching arrangement at its base. Hustler CG-144 2M Collinear Mobile Antenna - 3/8" x 24 4 FOOT 144-148 MHZ 400 WATT 5/8 WAVE 2. 5mm rigid fibreglass element. Hustler CG-144 2M Collinear Mobile Antenna - 3/8" x 24. Impedance: 50 Ohm. VHF & UHF Monoband & Repeater. So, to get the length of the ideal 5/8ths antenna for the full FM radio spectrum (centered on 98Mhz): 93. The Telewave ANT150F6-6 is an extremely rugged, 6 dBd gain fiberglass collinear antenna, designed for operation in all environmental conditions. The high efficiency and generous power rating of the 7586 can offer many solutions for modern trunked systems such as TETRA. Great for locations where visual impact is a problem, this antenna gets you on the 4 most popular VHF bands. 1 db gain and I can work all the local repeaters and about 15 miles simplex with the antenna sitting on the BASEMENT floor. What antenna? What frequencies? I have a Jetstream JTB-2 (A Diamond X-200 clone). It is formed based on BF180 UHF Transistor. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. ) This is an excellent performing J-Pole type antenna, constructed from readily available materials. Many antennas are based on half-wave dipoles fabricated from wire or tubing. 04m Collinear Aerial – Medium Barrel Spring. Antennas – a primer. Antenna Specialists: The Antenna Specialist Brand has been around for a long time! Here on CB World, you will find UHF antennas, VHF antennas, antennas for various frequency ranges, cellular antennas, on glass antennas, sailboat antennas, gutter mount antennas, Unity antennas, Yagi antennas, collinear antennas, and more!. External GPS Antenna for WatchMate 850. 456CP34, 435-470 MHz. The Coaxial Collinear is rarely mentioned in radio circles, odd. I've been reading a lot about homebrew antennas in the past 3 days. Navy and Coast Guard rely on Shakespeare for antenna engineering technology and fiberglass reinforced composite antennas for all classes of ships - rescue vessels to aircraft carriers. Whether you're operating on 2 meters or you work in the 1. New listing 870 - 965 MHz Fiberglass Collinear Antenna, 10 dBd. Collinear Mobile Performance; Model CGT-220. Slim Jim (J Integrated Match J-Pole) is probably the most easiest and powerful 2 meter antenna to build provided you have the exact measurement and material to build it. 2m antenna catches the wind a lot less than the 1. We provide RF antenna solutions for Cellular, Two-Way Radio, Wi-Fi, Bluetooth, GPS, RFID, LPWAN, ISM, and a wide range of IoT/M2M applications. Twin-Led Marconi Antenna 5 4. Our Price: $29. The Wire Size can range from 16 AWG to 12 AWG. Hard to construct matching coils are normally needed as well as hardware and tubing which can be difficult to find. 136 - Bi-Loop Antenna for 20m. 5 DB Gain Collinear NMO Mobile Antenna - Black 5. au The 144-175 MHz COL range is a series of "cut to frequency" 3dBd gain vertical collinears. The details of setting up the dongle and configuring the software are beyond the scope of this post. HVC21: 15m Loading Coil for HV7A & MV3A. 0 dB on 144 MHz. It's 9 feet tall. Accessories - please email or call so we know exactly the adapter you need. ARRL Product Review of the M2 6-Meter HO Loop Antennas. 8-inch Antenna with Fiberglass 20W Handheld BNC Antenna for ICOM V8 V80 V80E V82 V85 F3S HT-66 2 Way Radio Radio. This is the reason the antenna is nearly 50' tall! Click here to see a Big Hair and IMAX 2000 Antenna Comparison: CB Base Antennas. com in 3 categories. Made From a TV Satellite Dish. The antenna is 68mm and the can is 68mm. As low as $ 81. ) This is an excellent performing J-Pole type antenna, constructed from readily available materials. I first adjusted the LC circuit using a 4. Welcome to the G6OHM Website - Antenna Designs - Amateur Radio,Projects,Antenna Designs, Double Quad Beam,2m & 70cm SSB, Ham Satellites,Card Making, Recipes,BNOS,Flowerpot Antenna, Angela's Page,EXPMR Radio,Raised Bed Gardeningsion,Fusion Radio. 7dB of gain*. matt - July 4, 2014. Dimensions for the 144, 222 and 440-MHz bands are given in Fig25. 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. About 5/8 Collinear antenna The resource is currently listed in dxzone. Outdoor range tests show significant gain over rubber duck Antennas. It's an 8 foot long dual band collinear for 2m and 440. Nigel Thompson, Jan. The larger the wire, the wider the bandwidth. 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. Digital TV antennas have come a long ways since your grandma’s rabbit ears antennas you grew up with. Hustler Antennas 2 Meter Collinear Mobile Antenna With 3/8" x 24 thread base for ball mounts Gain: 5. This type of antenna has an enhanced gain and directivity in E-plane. Diamond X-400 Antenna (2m & 70cm) I now use a Diamond X-400 collinear antenna for 2m and 70cm, having recently upgraded from a Diamond V2000 tri-band 2m, 6m and 70cm antenna. homebrew collinear j pole for dual band vhf uhf antennas. 139 - Twisted Loop Antenna for 160m. Fits mast sizes of 1. 2m/70cm Dual Band J-Pole. Our Price: $29. If these two objectives are met, echos will be possible with an antenna gain of 23-24 (Decibels above isotropic are used in this note. 0dBd 5/8 Wave over 5/8 Wave over 1/2 wave 7. The antenna features a tapped coil design to maximize bandwidth. High Performance with consistent gain and radiation patterns across their wide operating. Larsen - 806-866 MHZ 4. He also tightened up the gap between the 2m/70cm sections seen in these pictures; the pics were taken before he corrected them. HVC18: 17m Loading Coil for HV7A & MV3A. It is working quite well - although not quite as good as my first collinear. 2 models of some variations on the traditional Franklin form of the antenna. Great for locations where visual impact is a problem, this antenna gets you on the 4 most popular VHF bands. 2 Meter 80W All Mode Amplifier 1 KW 2M LDMOS Amplifier 1 KW 222 MHz LDMOS Amplifier 500w 70cm Amplifier 1KW 70cm LDMOS Amplifier A Big Power Supply for SSPAs Low Pass Filter/Dual Directional Detector Sampling RF Power LED Bar Graph Meter Amplifier Control Board LNAs (preamps) and MMICs LNA Sequencing and Protection Building UHF Antennas VHF. 8 sections encased in PVC. This horizontal "slot" antenna, cut into the reflector of a TV dish, is both the master of disguise and high in performance. Delivering class leading performance in the. BNC 800 MHz REMTRONIX REM-830B Base Antenna (back of set) Flexible Whip rubber ducky design, minimum +6dB Gain over standard antenna. I've never tried it without the radials in place, but I imagine removing them wouldn't make a huge difference. Antenna Specialists: The Antenna Specialist Brand has been around for a long time! Here on CB World, you will find UHF antennas, VHF antennas, antennas for various frequency ranges, cellular antennas, on glass antennas, sailboat antennas, gutter mount antennas, Unity antennas, Yagi antennas, collinear antennas, and more!. Brand: Diamond. West, Toronto Ontario M3N1V7 Tel: 416-667-1000 [email protected] The Collinear CB Antenna is actually two x 5/8 wave antennas vertically stacked and phased together, to. This month I decided to build a 2 meter 5/4 wave antenna. The commercial grade antenna is great for hardtops, T-tops and other locations aloft where the compact size can deliver reliable communications via VHF radios. Find great deals on eBay for 2m antenna and m. Impedance: 50 Ohm. 134 - Taylor Vee Antenna for 20m. Comet GP-9 Dual-Band VHF/UHF Base Vertical Antennas. 2 meter collinear by m3fvb. This is the reason the antenna is nearly 50' tall! Click here to see a Big Hair and IMAX 2000 Antenna Comparison: CB Base Antennas. THE LIGHT WEIGHT ONE PIECE MAST CONSTRUCTION PERMITS THE ANTENNA TO BE INSTALLED MANY PLACES EASILY. The higher up the antenna, the further your signal will reach. Please wash your hands and practise social distancing. 2 GHz band, DX Engineering has a VHF/UHF beam antenna that can deliver the clean, clear signal you demand. Here are some 2 meter antenna options for you! You will find fiberglass 2 meter antennas, magnetic mount 2 meter antennas, trunk mount 2 meter antennas, base station 2 meter antennas, and more. 5 dB typical noise figure and 500 watts of RF at the antenna. These Antenna are designed to operate in UHF satellite band. 2 dB gain with an optimum low-angle radiation pattern. It's mounted on top of my tower. 129 - 2m Vertical Wire Antennas. Supplied with all brackets and matching hardware. uk: SHARMAN MULTICOM Collinear Antennas: A range of high quality base station antennas suited for amateur radio use. If mounting it outside, be sure to wrap the N-connector appropriately in self-amalgamating tape to prevent any moisture ingress. Because of the small sleeve/coax diameter ratio, only the sleeve must be shortened with pipe cutter to tune the antenna. The antenna appears to be a type of center-fed collinear but does not require any sort of matching hardware when fed with 50 ohm coax. Some of these are real, while others are either imagination or over blown facts. Dimensions for the entire antenna are forthcoming. pdf> John Ford Cell 1-816-365-0386. High Gain Vertical Collinear 477Mhz Full 40 Ch CB UHF Band Antenna 410-480Mhz " PicClick Exclusive Popularity - 0 views, 0 views per day, 1,386 days on eBay. The W7LPN 2 - 440 Vertical Collinear Antenna Project with a 6 Meter Surprise! by W7LPN ~ Rick Frazier UPDATE! Download the updated and easier to build (12-08) version It is a pdf file and is under 1 meg file size. INDOOR DAS ANTENNAS. 4 dBd gain, low PIM, PIP rated, HD, 156-174 MHz 156 to 174 MHz 2. This page documents a build of a 2-element 1/2 wave collinear J-Pole performed by Harry, KC9EOT, and myself, KB8OJH. To give some concrete examples of bandwidth, here is a table. Hard to construct matching coils are normally needed as well as hardware and tubing which can be difficult to find. These Collinear antennas are " 4 " Megs wide and "must be supported" at the top by a yard arm or tree limb. 4 dB NMO Collinear Mobile Antenna. Getting Started: First look at my drawing below, and decide how long an antenna you want to have up, approximately. It features a fiberglass center load. 98 Amateur Mobile Antennas The Hustler CG-144 is a 2 meter collinear mobile antenna providing a big 5. Folded Marconi Tee Antenna 8 10. Versions that he has built include 2M, 220, and 440 models, all for FM voice repeaters. erful antenna modeling software. 133 - Collinear Zepp Antenna. "Local" in Crosby, North Dakota, means 50. BNC (female) to PL259 adapter - allows the DBJ-2 to adapt to. Efficient 2 meter Disguise Antenna. Jan Starczewski Anteny. 2m Marine VHF Antenna As with most Marine VHF aerials designed for mast top mounting, the aerial came with 18m of downlead moulded into the base of the aerial. K3KY Low Band Antennas KQ6XA — HF Antenna for the Micro-Light Backpacking Enthusiast K6STI Receiving Loop K9AY Receiving Loop. 7dBi on 70cm, so that'll be the. 2 MHz vertical 1/2 wave Coaxial Dipole antenna project for your home QTH, SOTA, portable field operations/WICEN exercises or the emergency 2m Go-box. This article expands that set with NEC-4. Here is our list of the 10 things you need to know about modern day digital TV antennas. antenna collinear for repeater vhf home made. In this video, Stan Gibilisco (W1GV) shows us how to make a six element VHF collinear antenna that will give your signal a significant boost. Below are some photos of an experimental setup for 20m that helped me understand what is going on with end fed half wavelength antennas. VHF/UHF 144/440 DUAL Band Collinear Base Antenna Uvs300 - $99. 135 - Collinear Vertical Antenna 6dB-Gain for 2m, 1. Quick, easy, and cheap 1090MHz ADS-B antenna Having recently discovered the joys of RTL-SDR dongles, I decided that I wanted a dedicated ADS-B receiver using one. Order Code ME270 Price £37. 2 meter home built collinear antenna. diamond antenna corporation Miyata Building,No. The V2R has an SO-239 connector, and handles 500 Watts. 04 metre Colinear Antenna – Medium Barrel Spring – Black (6. Limited quantity remaining. pdf> <2 meter collinear 6dB vertical. The vertical collinear antenna design transformed from the theoretical pair of phased dipoles a), into a pair of dipoles driven in series from a single source and phased with a section of transmission line b), to finally c), the practical design that uses the outer conductor of the feed lines as the lower three radiating elements of the antenna. Coax cable is routed through the bottom ¼ lambda element, thus no balun is needed - the sleeve is actually the balun. 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. The Collinear 2M 70cm seems to be working very well. Dihedral form is most popular in this type of antenna reflector. Define collinear. Skip to main content 搜尋此網誌. This calculator is designed to give the horizontal length of a particular dipole (including Tees) antenna, or one side of it, for the frequency chosen. The trend on 432 MHz EME has been to build an antenna capable of pro- ducing echos. HVC14: 20m Loading Coil for HV7A & MV3A. Covering 144 Mhz - 146 Mhz and 430 Mhz to 440 Mhz. The aerial is tuned to 144Mhz whereas AIS is 162Mhz, thus it was some 10% off its centre frequency. Windom Antenna 6 7. A collinear two-element antenna, using half-wave dipole elements, has 3dB gain over a single dipole when dipole current maxima spacing (S) is. 2 METER SSB SQUARE LOOP From N4UJW 2m Quagi By W5UN 2M Yagis a Bunch-- From The Antenna Elmer 2M Quadix-- from Ross W1HBQ 2m 8db collinear for portable use. He also tightened up the gap between the 2m/70cm sections seen in these pictures; the pics were taken before he corrected them. HV7A: Mobile antenna system. Fiberglass Collinear 118-960 MHz Omni Patterns - 500 Watts Standard connector is a recessed N-Female. December 25, 2019 - 3:54 pm Mike Morrow. The pioneer and innovator in marine antenna design, Shakespeare is the world's first choice in marine antennas and electronics. Impedance: 50 Ohm. Let's start with review of the traditional Franklin form … Continue reading Co-phased collinear for 2m - discussion of phasing devices. MATCHING MOBILE ANTENNAS TO 50 OHMS If the antenna has an S WR of 1. antenna collinear for repeater vhf home made. I understand that everyone else in the world uses Metric, You can convert these … Continue reading "Open Stub J-Pole Project – Completed (Many times)". Diamond X-400 Antenna (2m & 70cm) I now use a Diamond X-400 collinear antenna for 2m and 70cm, having recently upgraded from a Diamond V2000 tri-band 2m, 6m and 70cm antenna. nerdsville The original Ed Fong Dual Band VHF/UHF 70cm/2m J-Pole PVC Pipe Antenna : Eye-On-Stuff - Duration. pdf> <2 meter collinear 6dB vertical. The antenna is broad-banded and should therefore provide a low SWR across the entire 2-meter band. Â Mounted a so-239 to a split piece of copper. ComPact Series Power Supplies. It can produce similar results to a commercial version and be made from scraps of coax. Resources listed under Collinear Antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. Our Price: $29. A collinear antenna array is made up of dipole elements. 9 ]2m 4- element Quad you can build. This page is broken. The Diamond CP-22E 2m Base Vertical collinear, * Frequency band 2m * Gain 6. It is formed based on BF180 UHF Transistor. 5 metres of ladder line as the main antenna that can roll up neatly in a coil and can be used hanging from a curtain rail above a window, dropped down from a tree, or taped to the side of a fishing pole and raised. 500 Watt enclosed coil and 2 sets of 1/4 wave radials which provide complete mast decoupling and optimum pattern and gain. Lighting & Electrical. 2 m pvc mount gp. 2dBd 5/8 Wave over 1/2 wave 5. While cut-and-try experimenta-tion is a very slow way to optimize antennas, modeling is so quick that a wide range of so-lutions can be investigated easily. 1 db gain and I can work all the local repeaters and about 15 miles simplex with the antenna sitting on the BASEMENT floor. DIAMOND ANTENNA CORPORATION Miyata Building,No. 130 - Earth-Mover Inverted-V Antenna for 40m. Versions that he has built include 2M, 220, and 440 models, all for FM voice repeaters. 2 dB gain, 7. Zeppelin Antenna 8 11. Made up from two half wave sections separated by a coaxial phasing coil. Hard to construct matching coils are normally needed as well as hardware and tubing which can be difficult to find. pdf> John Ford Cell 1-816-365-0386. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. The Collinear 2M 70cm seems to be working very well. home made collinear antenna. View the manual for G7144 Seven dB maximum effective gain provides more consistent pattern, even in marginal areas. 132 - Double Bobtail Antenna for 20m 135 - Collinear Vertical Antenna 6dB-Gain for 2m, 1. • Compared to many vertical antennas, the collinear J-pole shows a remarkable reduction in high-angle radiation. if the SWR is above 1. 5dB gain on UHF Unity gain on 2m Recommended Accessories - UL4BNC or UL4C with BMB or Mag3. The higher up the antenna, the further your signal will reach. 9 ]2m 4- element Quad you can build. Finally, a mast mount version of the 11 meter "collinear" CB antenna is available. I decided to start this thread to find out the truth. The approximate gain in the H-plane of the Collinear J antenna is from 4. 137 – Wire Beam 6dBd-Gain for 10m. I'm not really an antenna expert, but basically collinear array consists of two or more half-wave dipoles, stacked end to end along a common axis. Share your thoughts. Sign in to check out Check out as a guest. Dimensions for the entire antenna are forthcoming. diy collinear base antenna. Be the First to Share. Typically has 6 db (approx), over any other 5/8 wave antenna. A J-Pole antenna is a half-wave vertical fed at its base through a shorted quarter-wave stub acting as a transformer matching section. Hustler CG-144 2M Collinear Mobile Antenna - 3/8" x 24 4 FOOT 144-148 MHZ 400 WATT 5/8 WAVE 2. The 70 CM band may be limited. Instead of using stainless steel for the elements, he used brass. 18m) tall Three sections 5/8 wave 3 elements c-load (2m) and 5/8 wave 8 elements. Construction: Fiberglass. "Local" in Crosby, North Dakota, means 50. 2 dB gain, 7. Antenna offers “true” 2 element ½ wavelength phased radiator (centered tuned). BASE STATION ANTENNAS. 2 sets of 1/4 wave radials properly decouple lower radiator from the mast. 2 db gain vhf antenna with 3/8"x 24" threaded base. An allen key is also supplied for element replacement. The approximate gain in the H-plane of the Collinear J antenna is from 4. The Diamond CP-22E 2m Base Vertical collinear, * Frequency band 2m * Gain 6. For low power QRP portable field/SOTA work you can mount the antenna on a telescopic pole or hang it from a tree branch. Antenne HF da balcone 1. 131 - Coax-Cable Collinear Antennas. Comet GP-9 Dual-Band VHF/UHF Base Vertical Antennas provide very high gain on the 2-meter and Diamond Antenna X510HD Series Base Station Antennas. The correct lengths for the various models will be displayed in the chart. John AB0O <2M Collinear Balun Pic 2. Amateur Mobile Antennas The Hustler CG-144 is a 2 meter collinear mobile antenna providing a big 5. Add to cart. 0 out of 5 stars 1 $15. 2 meter home built collinear antenna. Covering 144 Mhz – 146 Mhz and 430 Mhz to 440 Mhz. This coil should work as the phasing stub in any 2m collinear antenna, but I can only vouch for the one I made. West, Toronto Ontario M3N1V7 Tel: 416-667-1000 [email protected] 170-0002 Phone:03-3947-1411 FAX:03-3944-2981 E-Mail:[email protected] Because of the ADS-B receivers input inpedance is usually 50 ohm I have build and tested two pure 50 ohm coaxial collinear antenna configurations and compared it with two similar mismatched coaxial collinear antenna configurations. A collinear two-element antenna, using half-wave dipole elements, has 3dB gain over a single dipole when dipole current maxima spacing (S) is. This set me back about 50 euro cents per 2 meter (which means about 0. jpg> <2M Collinear Pic 1. 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. Buy X-30 N 2M 70CM DUAL BAND COLLINEAR ANTENNA AERIAL PMR 446 PMR446 at Amazon UK. 136 - Bi-Loop Antenna for 20m. Stacked Element. The Antenna Farm : 2 Meter High Gain 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 Connectors Aviation Radios Repeater Systems Towers & Accessories Duplexers Diplexers & Triplexers VHF & UHF Base Stations Base. NEW! CAA-500MarkII Comet has redesigned the CAA-500 to include a full-color TFT LCD display and SWR graphing. So far received 100 votes for a total score of 4. Order Code ME270 Price £37. Supplied with antenna, radials, mast supports etc SO239 connection. 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. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne. Tee Antenna 4 2. Antenna V2r atau HyGain ujungnya di belah (gergaji), masukan Phasing coil , clem dan kuatkan supaya tidak goyang. AZE1000CBW, AZEL1000 WEATHERIZED PEDESTAL CROSSBOOM (PULSE) AE1000S, AZEL PEDESTAL BOX FRAME (SERVO) AE1000SCB, AZEL PEDESTAL CROSSBOOM (SERVO). or Best Offer. From ruggedized whips to sophisticated multi-functional antennas and control systems. In this video, Stan Gibilisco (W1GV) shows us how to make a six element VHF collinear antenna that will give your signal a significant boost. I then built a cantenna. The SWR is 1:15:1 at resonance and the bandwidth is 6 MHz (@a. 25λ D, or 1. Abstract—A novel planar Coaxial Collinear (COCO) antenna with rectangular coaxial strip is presented. 142 - VK2AAR Wire. com Collinear 2M Antenna. 00 Your Price: $59. 2 m pvc mount gp. Hustler 86" 2 Meter Collinear 200 Watt Trunk Mount Antenna Kit $ 97. Ham Radio Antenna, Electronics Projects, Communication, Survival, Ham Radio, Electrical Projects, Wifi Antenna, Ants, Guanajuato Jan Starczewski Anteny Illustration of the J antenna and four other variations including SlimJIM, Super-J, 5/8ths Super-J and Collinear J. Accessories - please email or call so we know exactly the adapter you need. I settled on a 2 meter vertical dipole. The maximum radiation in these arrays is broad side and perpendicular to the line of array. 2 meters long was quite a large aerial. It was a big improvement over the marine VHF aerial, more than doubling the minimum range to. 5dB * Power 200W * Type 2x5/8 * Length 2. May 2, 2019 - 2M ( 144Mhz ) 70CM (430 Mhz) Coax Collinear. 66 centimeters (which converts to 37. 15-1,1-chome Sugamo,Toshima-ku Tokyo,Japan. 75 wave length). Laird Connectivity is the leading supplier of the highest quality RF antennas engineered for superior performance. 7 band vertical (no radials) $569. This UHF antenna has a direct N female connection with a maximum power of 500 watts. A 2 meter antenna will often naturally also cover 70 cm too. A quater wave antenna's radiation pattern like a dome. Comet GP-9 Dual-Band VHF/UHF Base Vertical Antennas. 1m in length with 6 short radials, 50 ohm impedance , 60w power rating, SO239 connection. diamond antenna corporation Miyata Building,No. This article describes a collinear antenna made from very inexpensive RG58/U coaxial cable and encased in PVC pipe. Mk 2 Collinear with Silva 1. Laird Technologies is a leading global supplier of custom-designed and manufactured antennas and power products for wireless handsets, data devices and networks. Base Station Antennas. uk: SHARMAN MULTICOM Collinear Antennas: A range of high quality base station antennas suited for amateur radio use. 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. May 1, 2018 - This Pin was discovered by Robert Wang. These arrays are also called as broad. 220 MHz amateur radio boasts of a long and colorful history, affording it a special place in the hearts of amateur radio enthusiasts. These Antenna are ideal for amateur satellite communications and GPS tracking. What antenna? What frequencies? I have a Jetstream JTB-2 (A Diamond X-200 clone). Lighting, Solar, Battery. Diamond X-50N 2m/70cms fixed station vertical antenna N type plug. 2m VERTICAL COLLINEAR 6dB GAIN $139. home antennas vhf antennas 150-170 mhz hustler - 7'-1" tall 142 - 149 mhz 2 meter collinear 5/8 wave, 5. 2 db gain vhf antenna with 3/8"x 24" threaded base Please sign in to view stock. diy collinear base antenna. The antenna uses the radio…. A Double Zepp is a center-fed 1/2 wavelength antenna. A collinear two-element antenna, using half-wave dipole elements, has 3dB gain over a single dipole when dipole current maxima spacing (S) is. 5:1 or better over the entire band. The measurements below are for building a simple Dipole Antenna. 4000, October 1996, “prohibits restrictions that impair… antennas used to receive video…. Hustler CG-144 2M Collinear Mobile Antenna - 3/8" x 24. Connector available in both UHF or N. It's a good choice for repeater installations and can be top, or side mounted to the tower by WA6SVT. Cushcraft ARX2 2 Meter Ringo Ranger Antenna 135-160 MHz | eBay item 2 CushCraft AR-2 Vert, Monoband, Indep 2m, 3db, Ringo 135-160MHz -CushCraft AR-2 Vert, Monoband, Indep 2m, 3db, Ringo 135-160MHz pin. 2m in length. This antenna can handle up to 200 watts. Kinsner, VE4WK J-POLE ANTENNA FOR 2m 3 of 3 1 2 3 4 5 6 7 8 E D C B A E D C B A 1 2 3 4 5 6 7 8 5 June 1992 J-POLE PARTS LIST PROCEDURE P2 M1. Sebelum membuat antenna, sebaiknya kita mengerti dulu dasar penunjang pembuatan antenna. The graph below, from Jasik's Antenna Engineering Handbook, shows maximum possible collinear theoretical gain, in this case caused by the image: Referring to the graph and image antenna drawings above, we see a ground-mounted 1/2 wave vertical over infinite flat earth would have a current maxima. with an omnidirectional radiation pattern, the antenna is equipped with a fiberglass radome and a powder-coated aluminum mounting pole. These antennas were a favorite among the paging industry for their lo-band operations, primarily in the 43 Mhz range. Other useful information would include your experience with similar products, infomation on a product that you would purchase instead of this one, and so on. 3 dBd gain, low PIM, PIP rated, HD, 148-168 MHz 148 to 168 MHz 2. the guiding principle is that we have multiple 1/4 wave elements fed in series , the radiation from each adds in phase to produce a large vertically polarised omni-directional antenna. The four bay antenna has many more little lobes above and below and a slight asymmetry due to its mast. This compact antenna produces 2. Works on HAM VHF/UHF, MURS & FRS SER Plan Compatible MAY Need Tuning. 0dBd 5/8 Wave over 5/8 Wave over 1/2 wave 7. Back to Antenna calculator overview. Rated 4 out of 5. 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. One thing to keep in mind is this coil should be the thing you adjust when bringing the antenna into resonance. 137 - Wire Beam 6dBd-Gain for 10m. The collinear antenna is designed to be mounted vertically. Many hams now saying they do NOT work Here are the questions I have now: 1/4 wave. Rugged design withstands severe weather, also DC ground lightning protector. Took him 45 minutes and cost him $12. If you decide to make a 2m antenna, you'll end up with 1. AZE1000CBW, AZEL1000 WEATHERIZED PEDESTAL CROSSBOOM (PULSE) AE1000S, AZEL PEDESTAL BOX FRAME (SERVO) AE1000SCB, AZEL PEDESTAL CROSSBOOM (SERVO). M3FVB 3 element 2-meter Yagi-- From The ARRL 5 element 2-meter Yagi-- From The ARRL 2M 9 Element Yagi 5/8-WAVE COLINEAR "OUTSIDE PVC" 2-METER 146 MHz FM J-POLE Via KB1DIG & KB1GTR. If you are going to a be a radio amateur you’ll need an antenna, otherwise it is going to be a very quiet and. The larger the wire, the wider the bandwidth. Adobe Reader required. Broadcast signals are superior to cable and satellite. M3FVB VHF 8db collinear - Build a 2m 8db collinear for portable use Omni-Gain Vertical Collinear Antenna - This rugged antenna, an omnidirectional collinear, is capable of surviving harsh environments. Dual Antenna Stacking Boom For A144S5 and A144S10. 6C Note: You can NOT use a spring with this antenna. Collinear dual antenna, 2. homebrew collinear j pole for dual band vhf uhf antennas. A collinear array is usually mounted vertically,. 2 METER SSB SQUARE LOOP From N4UJW 2m Quagi By W5UN 2M Yagis a Bunch-- From The Antenna Elmer 2M Quadix-- from Ross W1HBQ 2m 8db collinear for portable use. 2 METER/440 DUAL BAND SLEEVED DIPOLE MODIFICATION BY W7LPN Rick Frazier The photo above is of my balun modification of the QST August, 2006 page 50, 2 Meter/440 dual bander sleeved dipole by Geoff Haines, N1GY. The main category is Collinear antennas that is about Collinear antennas. It's a good choice for repeater installations and can be. By John Portune W6NBC. This rugged antenna, an omnidirectional collinear, is capable of surviving harsh environments. Twin-Led Marconi Antenna 5 4. 140 - DX RX Loop Antenna for 160m. Add to cart. 129 - 2m Vertical Wire Antennas. Antennas 101 Presented by: Eric Webner K4FAN Dave Tyndell KK4LY K4KL Optibeam. All you need to do is enter the desired resonant (center) frequency in the form below, then click "Calculate". A matching device of some sort must be added between the antenna and the feedline if you wish to feed it with coax. View the manual for G7144 Seven dB maximum effective gain provides more consistent pattern, even in marginal areas. Hard to construct matching coils are normally needed as well as hardware and tubing which can be difficult to find. 5mm rigid fibreglass element. Mobile Antennas. K-PO Collinear Antennas: K-PO MA-1300-R (N type) 2m / 70cm: 3. Buy X-30 N 2M 70CM DUAL BAND COLLINEAR ANTENNA AERIAL PMR 446 PMR446 at Amazon UK. The Antenna Farm : 2 Meter Quarter Wave 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 Connectors Aviation Radios Repeater Systems Towers & Accessories Duplexers Diplexers & Triplexers VHF & UHF Base Stations. Because a collinear antenna is hot with RF along the shield of the coax, it is necessary to prevent the RF from coming back through the coax. He also tightened up the gap between the 2m/70cm sections seen in these pictures; the pics were taken before he corrected them. Impedance: 50 Ohm. delivery date Est ANTENNA COLLINEAR TRI-BAND VHF/UHF/SHF COMTRAK X-5000 N REF. Because a collinear antenna is hot with RF along the shield of the coax, it is necessary to prevent the RF from coming back through the coax. The space between the two dipoles is 1,5 m (0. 1-1/4 meter mobile gain antenna with trunk lip mount. Mobile Antennas. Lightning proof design makes this antenna particularly suitable for exposed sites. I’ve constructed a 144/440 Dual band Open Stub J-Pole Antenna. The graph below, from Jasik's Antenna Engineering Handbook, shows maximum possible collinear theoretical gain, in this case caused by the image: Referring to the graph and image antenna drawings above, we see a ground-mounted 1/2 wave vertical over infinite flat earth would have a current maxima. 7dBi on 70cm. Great for locations where visual impact is a problem, this antenna gets you on the 4 most popular VHF bands. This antenna can handle up to 200 watts. Versions that he has built include 2M, 220, and 440 models, all for FM voice repeaters. jpg> <2M Collinear Tune Stub Pic 3. MFJ Enterprises Inc,Ameritron,Hy-Gain,Hygain,Cushcraft,Vectronics,Mirage,MFJ,MFJ Enterprises,Antenna,Radio,Ham Radio,Amateur Radio,Tuner,Analyzer,Starkville,Amplifier. 2 wifi antenna. 170-0002 Phone:03-3947-1411 FAX:03-3944-2981 E-Mail:[email protected] 2 / 440 surprise! 2 / 440 vertical. 456CP34, 435-470 MHz. com is an archive of Rod/AC6V's webpages, and is no longer being updated. 2M Aluminum Slim Jim Antenna. 139 - Twisted Loop Antenna for 160m. A dual clamp set and RG-213 jumper are included. 9 out of 5 stars 4 HYS 2m/70cm Gooseneck CS Tactical 11. slim jim antenna (basic design) 2 meter copper tubing slim jim by ke5fxu (more slim jims below) 2 meter 2bcx slim jim antenna. One of the members commented to me that I should write an article about collinear arrays so that we could all build our own. 1296 vertical collinear. 2 dB Bandwidth: 4 MHz. Comet GP-9 Dual-Band VHF/UHF Base Vertical Antennas. The 2 Meter Collinear J Pole Antenna Project Get ready for field day, mountain topping, emergency communications, roaming or just plane ham radio fun with this portable inexpensive 2 meter J designed to fit into a small foldup space that yields about 8db gain. Many RASON members truly enjoyed last month's collinear antenna. The antenna is rated to 60 watts. These Collinear antennas are " 4 " Megs wide and "must be supported" at the top by a yard arm or tree limb. Coax cable is routed through the bottom ¼ lambda element, thus no balun is needed - the sleeve is actually the balun. Homemade ADS-B Collinear Antenna Earlier in the week a video comparing a Discone to a Coax Collinear antenna for ADS-B reception was posted. Telewave ANT150F6-6 161-168 MHz 6dB Fiberglass Collinear Antenna. 2dBd 5/8 Wave over 1/2 wave 5. 2m in length. I used 1″ thin-wall PVC pipe, aluminum tape, and RG-8X coax. Stacked collinear design assures maximum gain at the horizon. Check out our resources for adapting to these times. Discussion in 'Antennas, Feedlines, Towers & Rotors' started by WY4K, Mar 30, 2020. M3FVB VHF 8db collinear - Build a 2m 8db collinear for portable use Omni-Gain Vertical Collinear Antenna - This rugged antenna, an omnidirectional collinear, is capable of surviving harsh environments. So I decided I wanted a bit more gain. Bi-Directional Mast Bracket. No other omni directional CB antenna can come close to the gain of this antenna. Frequency Band - 2m; Frequency Range - 144-146Mhz. Supplied with antenna, radials, mast supports etc SO239 connection. 0dB(430MHz) / Max. I've got no way of checking those, but the antenna opens up repeaters on 2m I haven't heard for years, and fully quietening on local repeaters at just 5 watts. The antenna is rated to 60 watts. 25λ D, or 1. 5 DB Gain Collinear NMO Mobile Antenna - Black 5. 5dBi on 6m, 2. 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. 349 m) long portable antenna for 2 M VHF-UHF Portable Yagi-Uda Antenna Design 2 Meter Beam Antenna. UHF Radios, Antennas and accessories. List price: Previous Price C $100. 456CP34, 435-470 MHz. Be the First to Share. Made with fibreglass and complete with mounting kit. Three element collinear array for the 2m amateur band using 3D printed parts Photo 1: The vertically mounted 2m band experimental three element collinear array shown near a 5 element 2m Yagi for comparison. 8m long Sky Scan desk top scanning antenna. This is an UHF band TV antenna preamplifier circuit With 15dB gain to build easily. NEW Amateur Ham Radio Workman UVS-300 144 / 440 MHz Dual Band Base Antenna 3. Check out our resources for adapting to these times. Rated 4 out of 5. 1kg, This model is made of aluminium and is supplie. The antenna is constructed much like an ordinary Dipole antenna but with 5/8 Wavelength Elements matched with an added Impedance Matching Section of balanced feed line. If anyone could either help me or point me in the right direction. 2 db gain vhf antenna with 3/8"x 24" threaded base Please sign in to view stock. Back to Antenna calculator overview. Amphenol Antenna Solutions is a leading global solutions provider for wireless infrastructure systems. While cut-and-try experimenta-tion is a very slow way to optimize antennas, modeling is so quick that a wide range of so-lutions can be investigated easily. Dual Antenna Stacking Boom For A144S5 and A144S10. "Local" in Crosby, North Dakota, means 50. Type: Antenna. 75 / Freq in Mhz = length in meters of the ideal 5/8th's antenna. 137 – Wire Beam 6dBd-Gain for 10m. 95 Special Order : HS314448 : HUSTLER HS314448. Smiley Antenna is using a newly designed flex coil matching network. Dual Antenna Stacking Boom For A430S10 and A430S15. 137 - Wire Beam 6dBd-Gain for 10m. A Collinear array consists of two or more half-wave dipoles, which are placed end to end. This UHF antenna has a direct N female connection with a maximum power of 500 watts. It is important to note that …. The space between the two dipoles is 1,5 m (0. Find great deals on eBay for 2m antenna and m. 73 Magazine (also known as 73 Amateur Radio Today) (OCLC 22239204) was a United States-based amateur radio magazine that was published from 1960 to 2003. The SpectrumForce Yagi receive-only antenna is intended for use on UHF (400-520 MHz.