Homemade 2m 70cm Antenna

The 70cm radiator is changed to coaxial antenna design. 2 GHz band, DX Engineering has a VHF/UHF beam antenna that can deliver the clean, clear signal you demand. 5 - 1 across both bands with 55 watts input. It will also be necessary to connect a MP3 recorder because is it not practical to note the call signs, the QSO's, and to hold the antenna to track the Sat's. 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. Perhaps there's more to it than just this -- making a SWR meter absolutely necessary. With 1 watt, it will reliably hit a repeater 29 miles away (furthest repeater not blocked by terrain). 2 Element 2m 3 70cm Yagi By Zs6tvb Thingiverse. M2 Antenna Systems, Inc. Got the plans for it here: Copper Cactus J pole antenna - 2 metter 70 Cm dualband By the way, I left 1 1/4" between the tuning section between the 57 1/2" and 38" lengths of copper. I made my first contact using the Arrow 2m antenna, but I instantly forgot the call sign. I recommending building a copper cactus, cheap, easy, performs well and super gratifying to use. The first antenna that you should consider building is the quarter-wave ground-plane antenna for the 2m band. 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. 8GHz VDP Series Vertical Stick-On 1/2 Wave Dipole Antenna, 2m Cable, RP-SMA Connector Regular Price: $14. 2 Meter Vertical Dipole Build I decided it was time to set up a 2 Meter base station. In essence, log periodic arrays are a group of dipole antennas of varying sizes strung together and fed alternately through a common transmission line. SWR results of the prototype were less that 1. 2 meter collinear by m3fvb. These cables are 50 Ohms and have to be identical in length, this is important, identical in length!. Centerfire Antenna, LLC PO BOX 8305 South Bend,IN 46660. A different option is to mount two dipole antennas on the same pole, one each for 2m and 70cm and feed the antennas with a VHF/UHF duplexer. 2:1 SWR on the 70CM and can hit a repeater with 1W that's about 20 miles away. The Nagoya NA-701 is a dual band 2m/70cm antenna for your Baofeng or Wouxun HT two way radio. While you can pick these up with a standard scanner antenna, reception is much better with a directional antenna. It requires no radials, is totally weather protected, and only 5 ½ feet tall. 2:1 at center frequency and 1. 2 METER SSB YAGI ANTENNA. 70cm Moxon Beam. 5 - 1 across both bands with 55 watts input. The antenna is dual banded to operate on 70cm using the same sleeve technique as used on the dual-band basic Flower Pot. Manual Antenna Tuners. Buy Ham & Amateur Radio Antennas and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items. 2m / 70cm Vertical Dipole Antenna. This is our latest antenna featuring coverage in a single antenna - 2 meters, 220MHz, and 70cm. Ground plane antennas are easy to recognize by their appearance. A Simple 2 m/70 cm Vertical Dipole Antenna This easy to build dual band VHF/UHF antenna makes a great project for the new ham that is ready to get on the 2 meter and 70 centimeter amateur radio bands. 2m Cw Transmitter. 95 Until 06/30/20. Active 2 years ago. Resources listed under Antenna for 2 meters category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. Top-left: frontal view, top-right: side view, bottom: holder. If you decide to make a 2m antenna, you’ll end up with 1. 2 Reflector for 70cm 329 mm 110mm 3 Radiator 2m and 70cm 977 mm (4mm) 260 mm 4 Director 1 für 70cm 322 mm 300 mm 5 Director 2 für 70cm 320 mm 440 mm 6 Director 1 für 2m 935 mm 470 mm 7 Director 3 für 70cm 285 mm 750 mm 8 Director 4 für 70cm 297 mm 965 mm 9 Director 2 für 2m 915 mm 985 mm. 2m dual band (70cm/2m) antenna on the chimney – a generic one thats a bit like the Diamond antenna white stick – called an X200 For some strange reason the 70cm repeater that…. I also had time to make a PCB for the coaxial relay, so I need to run only one cable down from the roof and I can switch either 70cm or 2m antenna from inside. This is a 5/8 wave single band (2m) antenna and was the best performing handheld 2m antenna of all, giving 11dB of gain over the manufacturer supplied whip, the equivalent of running 63 watts of power! Sadly the telescopic whip was of poor quality and pulled apart during a recent WOTA activation. On UHF site, a bit narrow la , 432-437 Mhz below 1. left, diagonal). An impression of the 2m/70cm situation in the attic. Condition is New. edition of the ARRL Antenna Handbook covering Open Sleeve antennas to make Broad band antennas. The half wave 2M version of the Flower Pot antenna is easily modified to a dual band antenna for operation on a band that is the [approximate] third harmonic of the fundamental resonance. Elk Antennas was started to give the Ham the best Log Periodic antennas with the best gain, directivitiy, and front-to-back ratio possible for the size and price. This gave about +3. SWR/Frequency. 2 Meter 5/4 Wave antenna in PVC case Mike Martell N1HFX. E2 Plug'n Play 144 432 MHz 2M 70CM FM QRO CHOKE BALUN ANTENNA RG401 2kW PL259. By John Portune W6NBC. A single antenna can cover the entire amateur 2m/70cm allocation with more than acceptable SWR. PCS Electronics. To connect any ham radio to a dual band antenna you'll need a reasonable length of good antenna cable. On about 20m (10 watts) and up to 2m (200mW), the op-amp doesn't need to be used. Dual Band (2 Meter/70 cm) Solid Aluminum J-Pole. There's a nice paper on Tape Measure Yagi's here that will help in yagi design. In essence, log periodic arrays are a group of dipole antennas of varying sizes strung together and fed alternately through a common transmission line. com by Al Andzik WBØTGE. STRIPLINE SWR METER. Three di. 145 x 3 = 435). 8 Element Bowtie Indoor/Outdoor TV Antenna – 70 Mile Range. For the radiator. antenna which covers the VHF (2 meter), 220 MHz, and 70cm amateur band. I tried different antenna models, J-pole, half wave dipoles, Ground Planes …. This antenna is very similar to DIAMOND X200n I had in the past. Since my article on Simple Wideband Yagi's appeared in September AR I have had a number of people contact me advising that it would be better to use the grey electrical conduit rather than the orange version I did. Took him 45 minutes and cost him $12. From a performance. It describes a unique copper pipe fan dipole that Al created and that provides fantastic results!. 50-Ω-Impedance, fed with a 50-Ω-coax-choke (look for the pictures). The pattern and the currents of the Yagi are shown down. FL Connector and is ideal for either hand-held or access point applications. V or U Quagi. Photo: EA5FUZ The X-Quad is an improved design of the well known multi element quads. Wire Antennas for the Beginner QST June 1983, pp. 65 USD for 6. Why "poor radioamateur's mobile antenna"? Well you can buy the DV27 very often second hand, I even saw them on eBay for only 14 euro. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4" CPVC pipe with one tee, and a bit of time. Make a 2 kW Windom Balun. This calculator is designed to give the vertical length (height) of a particular whip type antenna, or the frequency of it. The folded dipole is claimed to offer increased bandwidth, and to closely match 300-ohm line. 95: ICOM IC9700 2m/70cm/1. Although only a 70 CM antenna was described in this article, the formulas can be easily calculated for the 6 meter, 2 meter or 1¼ meter bands. Also, this antenna may be somewhat directional. this is the best dual band j-pole ever built 2m - 70cm direct connection beam dimenisions. 15dBi 1/2 wave. How To Obtain A Ham License HAM BOOKS BY AC6V FM101x-New To FM Repeaters? DX101x - 235. It can be built for around $15-20 (1999 dollars). VE2ZAZ – January 2012 A Bit of EME History 1946: First experiments by US Mil. 0 mHz / 420. 70cm Moxon Beam. Elk Antennas 2M/440L5 Dual-Band Antenna $ 129. The antenna can be stuck down the back of the shirt, carried, or easily mounted on bicycles, etc. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. (the 746pro does not have 70cm. BTV - MLA-M. Homiebrew Base Loaded Mobile HF Antenna 6 thru 80 meters. Depending on the type of feed, a 70 centimeter antenna can look like and open or short at 2 meters. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4" CPVC pipe with one tee, and a bit of time. Specifications FREQUENCY: 144-148. It has gains 4 dBd on 2m and 6. You can alwys fine tune the antenna for best SWR by sliding in or out the top tube of the antenna. Even a 6-meter Yagi at 100 feet has a take-off angle of 2. With an addional director the gain on 70cm can be increased to 6,2dBd. The antenna is dual banded to operate on 70cm using the same sleeve technique as used on the dual-band basic Flower Pot. I wanted to make something simple that would be reliable and not require a balun or any impedance transforming, so I decided to build a quarter wave ground plane antenna for home. 2 Meter Ed Humphries N5RCK. 5 over a mhz. Diamond SG-7500 2m/70cm Dual Bander from Radioworld. Frequency: 28, 24, 21, 18, 14 MHz plus dipol 7 MHz Number of elements per band: 3 plus dipol 7 MHz Gain 28MHz - 14MHz: 8,5 - 8,0 dbd 7MHz dipol 0 dBd. A couple of old cavity resonators were discovered in the back shed. 6m/2m/70cm Yagi Antenna Built from Old TV Antenna by KGØZZ This turned out to be a great little antenna. 6M/2M/70cm Vertical. Cut your feedline down so only 3 or 4 inches are coming out of the antenna and put on your RF connector of choice find a temporary stand for your antenna. Introduction. This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. 2:1 making the antenna usable on 70cm. Some simple methods for making. On the other hand, by switching to REFlected, an antenna can be tuned by simply finding the minimum reading. 180 uplink CTCSS 67Hz and 145. 5 - 1 across both bands with 55 watts input. Here are some answers. Elk Antennas was started to give the Ham the best Log Periodic antennas with the best gain, directivitiy, and front-to-back ratio possible for the size and price. 2 Meter Beam, 15 elements, 14. I made mine out of welding rods and connected to a choc block, so all can dismantled very easy for portable work. (Make sure the one end Female that can be mounted thru a hole. Because of the small sleeve/coax diameter ratio, only the sleeve must be shortened with pipe cutter to tune the antenna. 4 to 1 Balun. Three di. Both of these ants. It has a nominal 3 dB gain over an isotropic source and is directional, tending to favor signals broadside to the wire. The antenna offers a gain of about 10 dB, is lightweight, mechanically strong and rivals the performance of similar commercial antennas. 70cm Vertical Antenna. ) on the 2m connector, i go connector>>coax jumper>>4 position switch and have 3 antennas hooked up, stacked loops for omni SSB/horizontal polarization, a 2m SSB/horizontal yagi & 2m FM vertical, with 1 open positionjust in case. On the other hand, by switching to REFlected, an antenna can be tuned by simply finding the minimum reading. Homemade 14 elements Yagi antenna for PMR446 Here is my first reliable and still working Yagi antenna for my radios PMR446, 14 elements, 2. A dipole is basically a length of conductor (wire) split into two portions and signal is taken off at the split. 2 / 440 surprise! 2 / 440 vertical. Since I like making things, a homebrew antenna was in order. I made the second one specifically for on the road mobile use in a fiberglass body RV which has little to no ground-plane available so a conventional 2m mobile antenna would have several difficult issues to overcome (if even possible). DualBand 2M/440MHz mobile antenna Very short yet efficient antenna, mainly used in metropolitan areas where extended range is not critical. Frequency Range 1920 MHz to 1980 Length 4. 2 Meter Vertical Dipole Build I decided it was time to set up a 2 Meter base station. This is much like the double bazooka antenna, or coaxial dipole antenna. The Super J-Pole antenna for 430 - 450MHz was constructed and used for FM simplex and repeater operation at my previous residence in Melbourne, Victoria from 2002 - 2007 The Super J Pole antenna is a co-linear vertical consisting of a number of half wave length vertical elements separated with half-wave length stubs (Tuning stub) feed with a. 33-38 Every ham knows how to make and install wire antennas. It was inside the building, and with 10 watts, we could hit both 2M and 70Cm repeaters up to 30 miles away (and that's in East TN, the "Heart of the Smokies"!). Jelinek N6VNG. LNA was designed using ATF-531P8 E-pHEMT with High IP3 (37 dBm). A stainless steel M3 stud is cheap, I pay only 2-3 euro for 1 meter of it. This worked all way up to thru 70 cm and 900 mhz too. The new 2m/70cm antenna is also the main motive for changing all the HF and VHF/UHF feeders and getting these into the shack more easily. Diamond Base Antennas. Typically, a high gain antenna is designed in the computer, then you try to come up with a matching arrangement for a 31. but on the UHF site ,have to test with my FT897. I decided to build the simplest of our four Yagi antenna first - the M2 Antenna Systems 440-21 ATV. This antenna is similar in construction to the 2-meter OFC sleeve dipole I built over 8 years ago, but it is a simple center-fed dipole. Here's some quick tips and tricks that may help you get on the HF bands with an indoor antenna. For the radiator. Cebik web site - requires registration (free) Commercial 2M 70cm Slim Jim - N9TAX. Many commercial HF antennas use this technique to achieve good patterns on their multi-band antennas. It measures at 5. ) 1_ 24 to 36" SMA Extender. 902/903 MHz. 0-450 mHz (70cm)) Easily convert to Horizontal with one simple screw adjustment. Raising or lowering the antenna can help with SWR, but also one more thing to keep in mind, It's a good idea to raise the antenna at least 1/4th wavelength above ground. 7MHz, nearly bang centre of the 70cm satellite allocation (435. 2 element 3-band mini beam. 5" Mast size: 1. How To Obtain A Ham License HAM BOOKS BY AC6V FM101x-New To FM Repeaters? DX101x - 235. I get 11 dbi on 2m and 12. 2m 6m 20m 30m 40m 70cm 80m 160m amateur radio android Angusvale bias tee BlueVNA Bush Search and Rescue Victoria Camping colinear antenna common mode currents contesting CW CW rig digital modes Eagle Peaks elecraft kx1 End fed antenna FM FT-817 FT-897 Hobbyking HT Internal FT-817 Battery ipad iphone John Moyle Field Day kx1 LiPo Minicircuits. Excellent 2m 70cm Yagi anatennas for balcony use. It shows the size and position. Photo: EA5FUZ The X-Quad is an improved design of the well known multi element quads. It consists of two Chebyshev low-pass / high-pass filters designed for the 2m and 70cm Amateur Radio bands. It works great!. The Diamond RH-999 is a quad band whip antenna that covers 6m, 2m, 70cm, 23cm. A Tree Friendly 2 Meter Halo Antenna. February 19, 2015 TVARC Antenna Guide for The Villages 2 Antennas for The Villages Tonight's review of the antenna members have used Tonight's list of antennas will cover • Multiband Antennas HF, 6M and some 2M/70cm • Presenting the implementation for most used • Description of layout with key PROs and CONs. The antenna has good reflection coefficient and VSWR ratio @ 1. Thanks to Paul Foulkie for this great antenna idea. Jetstream JTB3 2m/70cm Dual Band Antenna - Length: 71. A crossed satellite Antenna [ HOMEBREW ] Second life of dead MFM Hard drives 6 [ CATEGORIES ] POST IT ! 3 Ato D conversion 4 DDXX Caleendaar 244 The history of Torre Bert 36 [ HAM­MAG N. Elk Antennas was started to give the Ham the best Log Periodic antennas with the best gain, directivitiy, and front-to-back ratio possible for the size and price. Re: Homebrew 2m, 70cm mobile antenna Post by g8jit » 15 Feb 2010, 09:52 The welding wire is a good suggestion, can be a bit whippy when moving, bit as suggested some tubing round it wound help. 25GHz PowerPC G4, 2GB DDR RAM, running MacOSX and HamLoggerDX. Only About 19 oz. A dipole will work well on frequencies that are an ODD multiple of 1/2 wavelength frequency the antenna is cut for. The recent addition of an Elecraft XV222 transverter and homebrew Yagi completes my coverage up to 70cm. lucia - about me - contact me. Although it has two sets of directors and reflectors there is only one driven element, so only one coax. Schematics for AWX antenna for 2m and 70cm bands. The pattern and the currents of the Yagi are shown down. • For best results make sure that the shorted part of the quarter-wave feed section is above the support. The antenna can be stuck down the back of the shirt, carried, or easily mounted on bicycles, etc. Free 2-day shipping. For contests, I mount a 6m Moxon, 2m, 1. This was the first antenna I built using the antenna to control the driven element impedance. The Delta Loop is not only a great transmitting antenna but a low noise receiving antenna. This … Continue reading "My Diamond X510NA 2M/70CM Antenna". 540 inch OD). SWR results of the prototype were less that 1. When you found the "sweat" spot solder the the centre to the coil. 5 Band Hexbeam. To construct the antenna, first select a suitable length of grey 25mm conduit (as a minimum 1m but if you make it longer, you will have more room below the coil to attach to your antenna support). On the other hand, by switching to REFlected, an antenna can be tuned by simply finding the minimum reading. Based on Rothammel / DL6WU You may want to combine it with a folded. This mobile whip antenna won’t take long to build, works well and only requires one feed line for the two-band coverage. ) 1_ 24 to 36" SMA Extender. A dipole will work well on frequencies that are an ODD multiple of 1/2 wavelength frequency the antenna is cut for. Version 1: Ultralight with 3,2-mm-Elements. Mobile antenna, 2m/70cm, 3/8-24, 5ft. It requires no radials, is totally weather protected, and only 5 ½ feet tall. 100 MHz, which just happened to both yield a length of 19. By John Portune W6NBC. A 70cm / 2m crossed satellite antenna. On UHF site, a bit narrow la , 432-437 Mhz below 1. It was invented by John D. Still, despite its simplicity, the log periodic antenna remains a subject of considerable study even today. GP15 Vertical 6m/2m/70cm: COMPACtenna: 6m/2m/440 6m, 2m and 440 MHz Antenna: 10m/2m/440 10m, 2m and 440 MHz Antenna: 20m/2m/440 20m, 2m and 440 MHz Antenna: HamR-7 40m, 20, 10m, 6m. The elements are from an old broken fishing. But, they allow simple measurements,. VHF Base Antennas. Mast Mount 2m / 70cm Vertical Dipole Antenna. Computer: Apple Macintosh Dual 1. Instead of using stainless steel for the elements, he used brass. Antenna was designed for SO-50 satellite operation. 95: YAESU FT65R 2m/70cm HT $79. this is the best dual band j-pole ever built 2m - 70cm direct. 2m and 70cm Portable Beam for ARES This article discusses the construction of an inexpensive, portable, 2m and 70cm Yagi antenna for ARES field operations. The antenna itself is a purchased wire antenna which is then mounted internally in ¾" PVC pipe. The 70cm radiator is changed to coaxial antenna design. the SIMPLE 2m/440 Copper pipe "J" by Dale "Kuby" Kubichek, N6JSX 03/2001&2008 Can you use a pipe cutter or a hack saw, can you solder - then here is how to build a SIMPLE "J" antenna that will more than double your 2 meter (and even 440) performance! The "J" antenna goes back many years, long before I became a ham. in stock buy cheaper. The only dumb […] Ham Radio - Page 76 - Second Generation Nissan Xterra Forums (2005+) Said, May 9, 2018 @ 9:20 am. here is a link for pics. Although only a 70 CM antenna was described in this article, the formulas can be easily calculated for the 6 meter, 2 meter or 1¼ meter bands. Click on Calculate and the opposite value will be displayed in feet and inches or frequency in megahertz (Mhz). I'm getting 1. The Portable Or Base 2m 70cm Copper Pipe J Antenna By N6jsx. Don Murray W9VE Building a Dual-Band Antenna Mentorfest 10/23/04 2 Rubber Ducks are Kinda Like Rubber Chickens • Rubber duck nearly an isotropic source, but not as good. Serial communication is designed to allow just two devices to communicate across one serial bus. Homebrew Satellite Antenna (created 16 September 2003) The Arrow Antenna is a design classic: it combines light weight, compact design and functionality in a single package for operating FM dual band satellites such as AO-27, UO-14, SO-41 and SO-50 (and I've had lots of success on the linear transponder birds too with this antenna). Driven element dimensions are L = 13. Antenna was designed for SO-50 satellite operation. A figure-8 pattern is produced, similar to a dipole. While an amateur license is required to transmit on the 2 meter and 70 cm bands, the MURS frequencies are unlicensed. DELUXE MODEL ROLL UP 2M/70CM ROLL UP J-POLE/SLIM JIM ANTENNA WITH 10FT COAX. Amateur Base Antennas : Arrow: CR 146/440 Corner Reflector 2m/70cm: GP 52 Vertical 6m: GP 146 Vertical 2m: GP 146/440 Vertical 2m/70cm: OSJ 146/440 Vertical 2m/70cm: Chameleon: MIL Vertical 10m-6m : HYBRID Fixed Vehicular 160m-6m : HYBRID-MICRO Fixed Portable 160m-6m : Comet. 000 Mhz VHF; Build 4 Elements Yagi. Measurement results for the S11 (or SWR) a. As for me I'm trying to target 70cm for now as I do not have a usable 2m radio, so 1% of 70cm would be 7 millimeters which will be tough to get perfect. You could build your own. The first one is modified to be a 2m/70cm dual band and the other one is 2m mono-band as per design as described. The antenna can be stuck down the back of the shirt, carried, or easily mounted on bicycles, etc. Buy Harvest V2000 (6m/2m/70cm) Tri-Band Base antenna at Walmart. 0 mHz / 420. Mast Mount 2m / 70cm Vertical Dipole Antenna. Resources listed under 70cm antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. Noise figure is much better than on PGA103+ or SPF5189z for 2m band (< 0. Add : Dual Band 2m/70cm Mag Mount Mobile. Mobile antenna, 2m/70cm, 3/8-24, 5ft. Build a Long Range Antenna for $20 Antenna Anatomy. uk 01922 414796, for all your Diamond 2m/70cm Dualbander antenna needs. Wire Antenna Calculator. There's a nice paper on Tape Measure Yagi's here that will help in yagi design. There's a nice paper on Tape Measure Yagi's here that will help in yagi design. 20161121 70cm / 2m white stick antenna. 2 meter collinear by m3fvb. 25m, and 70cm 6-EL OWA Yagis on one rotator driven mast. An impression of the 2m/70cm situation in the attic. With a boom of just 2m and F/B in excess of 20dB including full-band coverage, this is a super-compact Field day antenna! 4 x 24el 432MHz LFA @ PA2V PA2V selected G0KSC LFAs (built by InnovAntennas) when he wanted the very best in EME performance!. The recent addition of an Elecraft XV222 transverter and homebrew Yagi completes my coverage up to 70cm. 5 dBd on 70cm bands and it is fed via single 5. The normal quarter wave ground plane antenna consists of a vertical radiator which is insulated and centered between 4 horizontal surrounding radials which extend out from the base of the antenna. Specifications: Length: 51. Here are some answers. 540 inch OD). He also tightened up the gap between the 2m/70cm sections seen in these pictures; the pics were taken before he corrected them. Arrow Antennas - pictured, left--K6LCS' Arrow Antenna Mods. The correct lengths for the various models will be displayed in the chart. I decided to build the simplest of our four Yagi antenna first - the M2 Antenna Systems 440-21 ATV. I am currently using a Popovic antenna for 2m, it is also a duel band so will cover 70cm. Excellent 2m 70cm Yagi anatennas for balcony use. We were able to tune these very quickly and easily using the new Chinese KC901H network analyser (more about that in another post). Any antenna — TV, radio, or whatever — consists of three parts: the element array, the framework, and the mast. Resources listed under 70cm antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. These cables are 50 Ohms and have to be identical in length, this is important, identical in length!. This is a temporary set up as I have just bought a full size duel band mobile antenna and mag mount. Inverted V antennas can be tied off as high as possible, but can go as low as 3 or 4 feet (0. 5 cm) long and the 2 meter phasing line is 16-1/2" (41. STRIPLINE SWR METER. This page contains construction details on a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use. I decided to build the simplest of our four Yagi antenna first - the M2 Antenna Systems 440-21 ATV. They are especially designed for amateur radio, with the following characteristics: Switchable polarisation possible (hor, vert, circ. I then remembered a chapter in the 18. The SWR on 70cm is better in the range 430-438MHz. Build your own 2m/70cm 3 Elements VHF by 5 Elements UHF Yagi antenna with excellent gain for both VHF and UHF operation. on the 70 cm (440 MHz) band and 25 MHz. Photo: EA5FUZ The X-Quad is an improved design of the well known multi element quads. Super J-pole 9 feet tall N2UHC. The data on 2m are they same as with the 2+2-El. A 6 Meter Moxon Antenna Discover 6 meters for the first time or enhance your existing operation with a rugged but portable version of this novel 2 element antenna. It is a roll up, J-Pole/Slim Jim antenna. Wire Antenna Calculator. Nice job, Wayne! Here are the pics:. It was inside the building, and with 10 watts, we could hit both 2M and 70Cm repeaters up to 30 miles away (and that's in East TN, the "Heart of the Smokies"!). Diamond NR22L 2m 2 x 5/8 Mobile Antenna. ) on the 2m connector, i go connector>>coax jumper>>4 position switch and have 3 antennas hooked up, stacked loops for omni SSB/horizontal polarization, a 2m SSB/horizontal yagi & 2m FM vertical, with 1 open positionjust in case. Inaccurate double bazooka and coaxial dipole claims have been debunked in numerous forums and texts, including in QST and Reflections by Walter Maxwell. 4 to 1 Balun. A unique method of fastening and isolating the elements to the boom is detailed and presented to the builder. Most of these designs focus on extended range, receiving signals over large arcs, but having null. Making a non-resonant bit of wire work from 160m to 2m. Binnenshuis fietspompantenne 2m-70cm. 2 Meter Beam, 15 elements, 14. ) for 2m and 70cm bands. Surprisingly, one of the hidden joys of T-hunting is home brew. edition of the ARRL Antenna Handbook covering Open Sleeve antennas to make Broad band antennas. 8 Element Bowtie Indoor/Outdoor TV Antenna – 70 Mile Range. easy 2 meter ground plane + 2 meter 5/4 wave antenna. Simple tuning procedure (SWR Meter/VNA Required). HF Monobander; HF MultiBand; HF Survivor Series; CB Monobander; Parts; VHF/UHF/Microwave Antennas. This pattern is ideal for accessing LEO satellites and can often eliminate the need for beam antennas and Az/El rotator systems. The antenna has good reflection coefficient and VSWR ratio @ 1. 70MHz Quarter Wave Ground Plane Antenna I had a dipole up for 4m previously ( see here ), which worked fine, but was quite ugly on a 1 metre boom arm. Homemade Full Wave Dual Band Antenna For 2 Meter & 70CM’s Measurements To Make It by Fuzz The Pi Guy 1 year ago 3 minutes, 24 seconds 7,368 views Download 14. Homemade 14 elements Yagi antenna for PMR446 Here is my first reliable and still working Yagi antenna for my radios PMR446, 14 elements, 2. this is the best dual band j-pole ever built 2m - 70cm direct. My setup consists of an HT in a pouch, attached by MOLLE straps, but I haven't settled on any antenna setup quite yet. 5cm Gain: 2. (I like the 14" dual band ones from Ebay. Having purchased an all-mode, all-band (160m - 70cm) transceiver, I became curious about what 2-meter weak signal operations have to offer. In the case of an HT working AO27 the duplexer separates the signals for the 70 centimeter downlink and the 2 meter uplink. Coax cable is routed through the bottom ¼ lambda element, thus no balun is needed - the sleeve is actually the balun. Welcome, The ATR-20 is the little brother of the Ameritron ATR-30 True Legal Limit antenna tuner. Because of the intricate tuning, we only sell this antenna with the pvc pipe. Manual Antenna Tuners. The RF power wave reshaping help taking some of the RF power emitting vertically to the horizontal radiation. schemas/on6mu_vhfrubberduck. 18-16 to 18. A simple dipole antenna can be used for improved FM broadcast signals. As for me I'm trying to target 70cm for now as I do not have a usable 2m radio, so 1% of 70cm would be 7 millimeters which will be tough to get perfect. Voltage Balun. the SIMPLE 2m/440 Copper pipe "J" by Dale "Kuby" Kubichek, N6JSX 03/2001&2008 Can you use a pipe cutter or a hack saw, can you solder - then here is how to build a SIMPLE "J" antenna that will more than double your 2 meter (and even 440) performance! The "J" antenna goes back many years, long before I became a ham. Took him 45 minutes and cost him $12. Cut your feedline down so only 3 or 4 inches are coming out of the antenna and put on your RF connector of choice find a temporary stand for your antenna. DIY 5$ Portable VHF Yagi Antenna for the 2 Meter Band (144-146 MHz) by F4HWK: In this publication i explain how to build a very light weight, cheap, easy to build and deployable in 30 seconds portable VHF antenna for the 2 meter band. 2 Element 2m 3 70cm Yagi By Zs6tvb Thingiverse. Also, this antenna may be somewhat directional. antenna which covers the VHF (2 meter), 220 MHz, and 70cm amateur band. com by Al Andzik WBØTGE. If they are not installed, increase the pipe. GP 3 Vertical 2m/70cm: COMPACtenna: 6m/2m/440 6m, 2m and 440 MHz Antenna: 10m/2m/440 10m, 2m and 440 MHz Antenna: 20m/2m/440 20m, 2m and 440 MHz Antenna: HamR-7 40m, 20, 10m, 6m, 2m, 220 and 440 MHz Antenna: Cushcraft: A270 6S Beam 2m and 440 MHz: A430 11S Beam 440 MHz: Vertical Antenna Chart & Index: Diamond: F 22A Vertical 2m: F 23H Vertical. I settled on a 2 meter vertical dipole. VE2ZAZ – January 2012 A Bit of EME History 1946: First experiments by US Mil. Mast Mount 2m / 70cm Vertical Dipole Antenna. I have home made a j-pole for 2m, and a neat little ground plane antenna for 70cm, both of which show an SWR under 1. To keep costs down, coax is soldered directly to the board and you can use heatshrink or the Yagi boom itself as a case. -Ultralight-Yagi for 2m can be used on 70cm with an SWR of 1,5 without any changes. Antennas And Antenna Kits - Dl. Big Wheel Antenna for 2m, 70cm and 6m. This antenna is designed for amateur band frequency for both VHF (2m) and UHF (70cm). Loop antenna calculators suggest that a loop of that size can be tune from 40 to 10 mtrs with a variable capacitor of 10-180 pF. When you found the "sweat" spot solder the the centre to the coil. Why not try out a 2m Moxon antenna for your next indoor antenna project! It's a simple antenna to build and provides better performance in less space than other antennas I've tried for weak signal use. 2 Meter Copper J Pole Dr. Cut the RG-62 about 2" (5 cm) longer than these measurements and leave 1" (2. in Project Diana. Centerfire Antenna, LLC PO BOX 8305 South Bend,IN 46660. MAKING PCBS - SEVERAL METHODS. 0-450 mHz (70cm)) Easily convert to Horizontal with one simple screw adjustment. 5 over a mhz. This portable 2m/70cm antenna is suitable for both portable and home operation. A 70cm / 2m crossed satellite antenna. 145MHz x 3 = 435MHz - that's 2M to 70cm or VHF to UHF] The modification involves placing a coax phasing sleeve of aluminium foil around the outside. Sign in to check out Check out as guest. Both of these ants. Tags: Antennas. Enter one (only one) value, the desired frequency or the antenna length in any length field. vhf - uhf band plan chat j-pole antenna super j-pole antenna cubic quad antenna arrow antennas dual band j-pole note: this antenna was disigned by arrow antennas and it works great. VHF Hand Held Radios. 5 waves on 440 and presents the 50 ohm resistance that most modern transcievers require for a good impendance match on both bands!. vhf - uhf band plan chat j-pole antenna super j-pole antenna cubic quad antenna arrow antennas dual band j-pole note: this antenna was disigned by arrow antennas and it works great. G2BZQ 10 String Up the GPU 80 - This compact antenna could be part of your clandestiny G2BZQ 14 Return of the Amazin' Hall Tree Vertical - This time for 40/30 K5CW 18 Twinleads To Go - Keep these emergency antennas for 2m and 70cm in your glovebox W4JC 20 The Hybrid Vee - Revisit the original Taylor Vee -and. BTV - MLA-M. Pre-tuned to be resonant @ ~146. Efficient 2 meter Disguise Antenna. MFJ-482 elbug with 4 memories and Salora TV-dish actuator control unit (for tilting the 2m and 70cm antennas). If the antenna strikes a low hanging garage opening or other obstacle it simply flexes no damage done. Next secure each 1/4 wave element in the binding post. , from which the percentage of 2m 70cm antenna supply is 95%, 2%, and 1% respectively. 4 dbi on 432! It appears that the SWR on 70cm is very dependent on the length of the 432 driver and its distance from the 144 driven element. It consists of a dipole driven element mounted in front of two flat rectangular reflecting screens joined at an angle, usually 90°. The goal here is to put up a cheap, easy, and quick 2-meter antenna that is simple and unobtrusive, but works. 2 Elements Yagi build for 107Mhz FM Band; Build the 5 Elements 2m VHF Yagi; Build a 4 elements yagi 157. The diagram below shows the basic arrangement of the 2m Half-Wave version of the antenna. I wanted to make something simple that would be reliable and not require a balun or any impedance transforming, so I decided to build a quarter wave ground plane antenna for home. in stock buy cheaper. ANTENNA HF: Delta-Loop 84m (7m on the ground) ANTENNA VHF/UHF: Homemade YAGI 2m/70cm 5el/8el ANTENNA UHF: Homemade 10el YAGI for 70cm ANTENNA VHF: Homemade QFH 137MHz for Sat Meteo ANTENNA VHF/UHF: Coax antenna PA0FBK for 2m/70cm ANTENNA TUNER: MFJ-941E Versa Tuner II • Jul 17, 2014 · Ferrite rod antenna. Dipoles need to be half a wavelength long, locating these long antennas can be an issue, especially when we are aiming for the 80 metre band or lower. Most people make these for 2m use, but you can make them for 70cm use if required. 18-16 to 18. If you decide to make a 2m antenna, you'll end up with 1. antenna which covers the VHF (2 meter), 220 MHz, and 70cm amateur band. 2m Slim Jim antenna made for under £10. -Ultralight-Yagi for 2m can be used on 70cm with an SWR of 1,5 without any changes. A simple ham radio 2 meter and 70 cm antenna for fixed or portable use. Multiband Antennas are antennas that can be used for more bands at once, thus they are very practical. Shop for 2 Meter Antennas here. So I decided I wanted a bit more gain. IoT and M2M including SIGFOX, LoRa, Cat M, NB IoT and ISM. It can produce similar results to a commercial version and be made from scraps of coax. 2m dual band (70cm/2m) antenna on the chimney – a generic one thats a bit like the Diamond antenna white stick – called an X200 For some strange reason the 70cm repeater that…. There are usually four radials, three being a minimum, but you could use up to six. HYS Dual-Band 9. Made From a TV Satellite Dish. edition of the ARRL Antenna Handbook covering Open Sleeve antennas to make Broad band antennas. The only real way to measure SWR is with micro- striplines. , the $26 BaoFeng UV5R) and would like more effective range without having to buy an amplifier. Choose from three connector types: SMA Female (Model NA-701-SMAJ), SMA Male (Model NA-701-SMAP) or BNC (Model NA-701-BNC). Of course, to use the same thing for 70cm, or any other frequency over 2m, all I have to do is screw on another piece of tubing. Because of the small sleeve/coax diameter ratio, only the sleeve must be shortened with pipe cutter to tune the antenna. One of the major keys to understanding Yagi theory is a knowledge of the phases of the currents flowing in the different elements of the antenna. Super J-Pole Aaron Schmitz KB0YKI. antenna which covers the VHF (2 meter), 220 MHz, and 70cm amateur band. Perfect gain and SWR on both bands. You can either homebrew your own one (very easy and lots of designs available on the internet - just use Google) or buy a 2m/70cm antenna from any shop that sells amateur radio equipment. Noise figure is much better than on PGA103+ or SPF5189z for 2m band (< 0. I'm getting 1. Handmade Slim Jim Antenna by. About Homemade 2M/440 J-Pole Antenna The resource is currently listed in dxzone. 5 cm) long and the 2 meter phasing line is 16-1/2" (41. Adobe Reader required. Matching is excellent on all three bands and can be tuned independently. , 420-450 MHz Nano Wheel 33cm - 2oz, 6. You should be able to find most of the materials at the nearest building supply center or neighborhood hardware store. Pre-tuned to be resonant @ ~146. Built with same materials by the hundreds. For details: http://www. Free Online Engineering Calculator to find the Dimensions of a Logarithmic Periodic Dipole Antenna for a given Frequency Range and Length. The correct lengths for the various models will be displayed in the chart. This portable 2m/70cm antenna is suitable for both portable and home operation. MFJ-482 elbug with 4 memories and Salora TV-dish actuator control unit (for tilting the 2m and 70cm antennas). A Uniquely-tuned 2M T-hunting Loop. 2 db of forward gain. The top countries of suppliers are China, Taiwan, China, and Hong Kong S. Parts Needed. 99, plus tax, you get a 70. For those of us who are using 70cm (430-470MHz) Amateur band tracking/telemetry transmitters, I found some interesting low-cost DIY antenna projects. Because of the intricate tuning, we only sell this antenna with the pvc pipe. in stock buy cheaper. Approximately 1/4 of the 70cm power will flow into the 2m dipole because 440 MHz divided by 3 equals 147 MHz, i. Arrow Antennas - pictured, left--K6LCS' Arrow Antenna Mods. WB2HOL 's 2M Tape Measure Beam (used mine to work the ISS!)--Tape Measure Beam KITS! W6NBC' s 2M/70CM Tape Measure Beam Project -. but on the UHF site ,have to test with my FT897. Dual band vertical antenna 2M/70CM. 9MHz (centre of 2m 145. Backpack antenna (2m/70cm)? QUESTION. Perfect gain and SWR on both bands. If you want to really reach out and maximize your 2 meter and 70 cm radios you'll want to find a good base station antenna for the shack. 5dBi gain over a 1/2 wave length antenna (mounted same height) by shaping some energy from vertical direction to the side. however the base of the 5/8 antenna presents a relatively low impedance, not the high impedance offered by the ¼ wave stub. 2 Meter WB8ERJ. This is a simple and quick design for a collinear antenna. I have used this antenna made by Nelson Antennas (on eBay) on many occasions over the past 2 years. If you decide to make a 2m antenna, you'll end up with 1. Diamond SG-7500 2m/70cm Dual Bander from Radioworld. 5 dB of gain, these antennas make some design compromises for the feed impedance, use an asymmetrical feed and make trade offs for a very clean pattern. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. 1/2 and 5/8 Al pipe sizes are used. 5cm Gain: 2. This compact, inexpensive, easy-to-build loop is ideal for close-in DFing and T-hunting. Be sure your antenna length is measured up to 1,25 m. The antenna array may also be configured without the rotator and without the 2m/70cm antenna for use in an attic horizontally. With an addional director the gain on 70cm can be increased to 6,2dBd. NEW LIMITED SPACE 160 THRU 70CM ANTENNA MARVEL PROJECT! KB0YKI ANTENNA DESIGN Various antenna types-off site. The antenna in the main picture is a 6m Half Wave endfed. Another option was the Egg beater antenna, or the K5OE's variant Texas Potato Masher. 4 match across both bands (2m & 70cm). 6mm 25mm square steel tube. Note 2: Generally the external antenna socket is used to simply replace the existing modem antenna. Elk Antennas was started to give the Ham the best Log Periodic antennas with the best gain, directivitiy, and front-to-back ratio possible for the size and price. BTV - MLA-M. The FCC permits a maximum of 2 Watts (TPO) power output by a MURS transceiver, but it. Home Made HIGH POWER Magnetic Loop. With an addional director the gain on 70cm can be increased to 6,2dBd. The 2 Meter 10 element collinear has a whopping 13 dBd gain (more than most Yagi types. 1_ SMA Male Antenna of your Choice. It is unlikely to switch. Both of the bands, 2m and 70cm, can be operated simultaneously by using optional antenna duplexer. It's meant for portable use, so has 5ft of coax, which is great for mobile use in the wild, but I wanted something I could get high-up and then sit comfortably. This mobile whip antenna won’t take long to build, works well and only requires one feed line for the two-band coverage. Super J-Pole Aaron Schmitz KB0YKI. To construct the antenna, first select a suitable length of grey 25mm conduit (as a minimum 1m but if you make it longer, you will have more room below the coil to attach to your antenna support). I also had time to make a PCB for the coaxial relay, so I need to run only one cable down from the roof and I can switch either 70cm or 2m antenna from inside. G2BZQ 10 String Up the GPU 80 - This compact antenna could be part of your clandestiny G2BZQ 14 Return of the Amazin' Hall Tree Vertical - This time for 40/30 K5CW 18 Twinleads To Go - Keep these emergency antennas for 2m and 70cm in your glovebox W4JC 20 The Hybrid Vee - Revisit the original Taylor Vee -and. uk 01922 414796, for all your Diamond 2m/70cm Dualbander antenna needs. left, diagonal). It works the 6 meter, 2 meter and 70 centimeter bands. 6m/2m/70cm Yagi Antenna Built from Old TV Antenna by KGØZZ This turned out to be a great little antenna. Antennas And Antenna Kits - Dl. Double Bazooka NVIS Antenna Calculator. The SWR is usually acceptable on the 3rd harmonic, although that is partly due to the increased feeder losses on 440. FOR IMMEDIATE RELEASE December 30, 1899. Antenna Setup. Enter one (only one) value, the desired frequency or the antenna length in any length field. DualBand 2M/440MHz mobile antenna Very short yet efficient antenna, mainly used in metropolitan areas where extended range is not critical. Super J-Pole Aaron Schmitz KB0YKI. For 70cm you can get a 70cm antenna, or perhaps find an antenna designed for both bands. 3 element beam for 10, 15. Manufacturer Tram Product Description 2M/70cm 5/8 Wave Antenna Frequency (MHz) 144-148 & 440-450 Product Narrative Base loaded Dual Band High gain antenna Usable Bandwidth 4/10 MHz Gain (dB) 3/6. 2 Element 2m 3 70cm Yagi By Zs6tvb Thingiverse. This suggestion is a flop. The main advantage of this arrangement is an improved bandwidth over a standard half-wave dipole. 5 dBd on 70cm bands and it is fed via. Homemade Full Wave Dual Band Antenna For 2 Meter & 70CM’s Measurements To Make It by Fuzz The Pi Guy 1 year ago 3 minutes, 24 seconds 7,368 views Download 14. Big Wheel Antenna for 2m, 70cm and 6m. 99, plus tax, you get a 70. 0" and H = 3/8" Elements are 1/8" diameter. Build a Long Range Antenna for $20 Antenna Anatomy. So I decided I wanted a bit more gain. This antenna is similar in construction to the 2-meter OFC sleeve dipole I built over 8 years ago, but it is a simple center-fed dipole. Home Made HIGH POWER Magnetic Loop. The 70cm radiator is changed to coaxial antenna design. Its only a 2 meter antenna, but with a little inventiveness it can be turned into a VHF/UHF antenna. This is our latest antenna featuring coverage in a single antenna - 2 meters, 220MHz, and 70cm. Tram-Browning Pre-tuned UHF (70cm) Fiberglass Omni Base Antenna - Model 6157 A great antenna at a great price! If you're looking for an antenna EASY button, you'll have no worries with a BR 6157 WIDE BAND UHF Omni. It has gains 4 dBd on 2m and 6. I then began research on what it would take to make this antenna perform well on 2m and 70cm. 95: YAESU FT65R 2m/70cm HT $79. Sep 13, 2009 · Tuner is z-match. By John Portune W6NBC. 2 meter collinear by m3fvb. A simple ham radio 2 meter and 70 cm antenna for fixed or portable use. I'd like to make (or purchase) an antenna suitable for portable operation, capable of being mounted, or at least carried, on a backpack. Homemade 70cm Yagi Beam Antennas March 2, 2020 - by Arfan - Leave a Comment Tape measure vhf yagi antenna aday 70cm s directional antennas m5aml homebrew aerials ham radio s by csaba yo5ofh. A very simple and cheap tv antenna amplifier circuit built with BF961 a N–Channel Dual Gate MOS common Wideband UHF Amplifier – Antenna TV Amplifier Circuit Received by Email - 10/23/2009. Umbrella Antenna Ideas. Five Element Portable Hand Held Yagi - for 70 cm 440-7 Seven Element Portable Hand Held Yagi - for 70 cm (37 1/2 " Boom) 146/437-10 LEO Satellite Antenna - 3 Elements for 2 Meters crossed with 7 Elements for 70 cm 146/437-14 Alaskan Arrow LEO Satellite Antenna - 4 Elements for 2 Meters crossed with 10 Elements for 70 cm 121. Tune in to space with a homemade yagi antenna. I also connected cables (Ecoflex 10) to both 2 meter and 70 cm feeding elements. An example: a 2m J-Pole antenna can be tuned to the 70cm band (in other words it can have an SWR approaching 1:1), but the angle of attack (radiation pattern) of such an antenna is so bad that it. Diamond NR22L 2m 2 x 5/8 Mobile Antenna. 3 metres long which is an ideal size for hand-baggage on aircraft. UHF Hand Held Radios. A different option is to mount two dipole antennas on the same pole, one each for 2m and 70cm and feed the antennas with a VHF/UHF duplexer. FOR IMMEDIATE RELEASE December 30, 1899. right, circ. I have had much better results (without having to make corrections) using a 1/2 inch tape measure for the 440 side. Measurement results for the S11 (or SWR) a. 70cm Vertical Antenna. design a j pole for any band. edition of the ARRL Antenna Handbook covering Open Sleeve antennas to make Broad band antennas. 2:1 making the antenna usable on 70cm. 4 dbi on 432! It appears that the SWR on 70cm is very dependent on the length of the 432 driver and its distance from the 144 driven element. All products are guaranteed. 70MHz Quarter Wave Ground Plane Antenna I had a dipole up for 4m previously ( see here ), which worked fine, but was quite ugly on a 1 metre boom arm. 5 cm) long and the 2 meter phasing line is 16-1/2" (41. How a Dipole Antenna Works; How a simple counterpoise can lower your SWR. Ground-plane Antennas for 144, 222 and 440MHz For the FM operator living in the primary coverage area of a repeate r, the ease of construction and low cost of a 1/4-λ ground-plane antenna make it an ideal choice. With a little more weatherproofing, it will make a fine dual-band base station antenna of moderate gain (2. Common conne. Five Element Portable Hand Held Yagi - for 70 cm 440-7 Seven Element Portable Hand Held Yagi - for 70 cm (37 1/2 " Boom) 146/437-10 LEO Satellite Antenna - 3 Elements for 2 Meters crossed with 7 Elements for 70 cm 146/437-14 Alaskan Arrow LEO Satellite Antenna - 4 Elements for 2 Meters crossed with 10 Elements for 70 cm 121. Total height 5ft 8 inches. 3 metres long which is an ideal size for hand-baggage on aircraft. With an addional director the gain on 70cm can be increased to 6,2dBd. Optimized Wide-Band (OWA) 2m Yagi1. Make an offer. This is a 5/8 wave single band (2m) antenna and was the best performing handheld 2m antenna of all, giving 11dB of gain over the manufacturer supplied whip, the equivalent of running 63 watts of power! Sadly the telescopic whip was of poor quality and pulled apart during a recent WOTA activation. 9 Ohm feed! For the cost about 0. I have had much better results (without having to make corrections) using a 1/2 inch tape measure for the 440 side. Dipoles need to be half a wavelength long, locating these long antennas can be an issue, especially when we are aiming for the 80 metre band or lower. With 1 watt, it will reliably hit a repeater 29 miles away (furthest repeater not blocked by terrain). Diy Tv Antenna Ham Radio Antenna Wifi Antenna Radios Radio Reference Spy Store Spy Tools Gold Detector Dipole Antenna entenna by DK7ZB With two reflector elements the Hentenna can be changed from a bidirectional antenna to an interesting directional antenna. After browsing the various Internet antenna construction sites in search for the best portable satellite antenna for the V/U and U/V modes, I figured I could build something good. You now have a 70cm 1/2 wave dipole which you can confidently use for a SOTA activation. For example if you cut a dipole for 7. Base Antenna. It was invented by John D. 25 meter (222 MHz) 70 cm (432/440 MHz) 33/23/13 cm (902/1296/2400 MHz) Ho Loops / HO Loop Accessories; Satellite Products; EME Products; DX-Pedition / Portable Products; Antenna Bundle. 2-Meter Vertical Dipole Array - KG4JJH A 2-Meter Vertical Dipole Array, KG4JJH Page 1 of 6 A 2-Meter Vertical vertical dipole array. one quarter (1/4) wave is the minimum height above ground for effective performance. 32), in that when you plot, the frequency scale remains 50 to 200Mhz, which gives useless plots for other frequencies. If we look at the antenna as a 70cm antenna (435MHz), it will be completely different. Premium quality anttennas for two bands. Uncategorized. 2 Meter Vertical Dipole Build I decided it was time to set up a 2 Meter base station. Total height 5ft 8 inches. 2 db gain on 440-450 Mhz Connector: SO239 Impedance: 50 ohms Length 71. A couple of old cavity resonators were discovered in the back shed. Hot this week in 2m Antenna. Photo: EA5FUZ The X-Quad is an improved design of the well known multi element quads. 5cm Gain: 2. The goal here is to put up a cheap, easy, and quick 2-meter antenna that is simple and unobtrusive, but works. 5 cm Connector Type SMA(m) 2000-1487 Telescoping whip antenna, with knuckle elbow. The 2 meter antenna worked perfectly on the first try! It has a flat 1 : 1 SWR across the entire 2 meter band. They are supported from the ends which slide into a heavy walled tube attached to either end of the elevation pivot shaft.
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