2m 70cm Base Antenna Homebrew Yagi

HRO catalog lists the mobile one at unity gain, but no figure on the base job. The problem with both antennas is that while they both work fine on 2m the 70cm band does not really cover the entire band. Also, the antenna is. I been searching for months now trying to find a good design for a circular polarized 70cm yagi. Separate systems with nearly zero interaction between the two antennas. Fast shipping. But it was getting a little bit scuffed and the cable was all ratty. A Quagi antenna uses the same strategy as a Uda-Yagi, using a refltector, a driven element, and then a number of director elements. If you make one of these antennas for 2m, I guarantee you that you'll be able to get a lot farther range than that with. To scale this antenna for any other VHF/UHF frequency, read the ARRL article (. Making a Coaxial Dipole If you start with a common half wave (λ/2) stainless whip and extend it all the way down through a λ/2 long support tubing, Homebrew Coaxial Dipole for VHF or UHF Here’s a base station antenna you can easily build for 146, 220 or 440 MHz. Matching is excellent on all three bands and can be tuned independently. This page shows a 7 element, Yagi beam antenna built out of spare parts for the 70 CM band. Recommendations for a dual band 2m/70cm balconey antenna? I also had a three element 2 meter yagi as well, and could talk 2 meter simplex with my friend 22 miles. This antenna (Version 1) was described in the issue 2/2000 of the magazine "FUNKAMATEUR" , report "Kurze Yagis für das 2m-Band in bewährter 28-Ohm-Technik". Since an old 5 element version (v1) of my antenna was shown in the July 2011 edition of RadCom, a few people have contacted me asking for some information on how it was constructed. Ultimate design with with latest professional full-3D electromagnetic modelling software. I took those bits and put them all together and this is the results. The 2m/440 Super J-Pole. 95 In Stock DUAL BAND VHF/UHF YAGI $107. 2m/70cm Dual Band J-Pole by KK4ICE. 7-Element-Yagi for the 2m-Band with the 28-Ohm-DK7ZB-Match. This antenna features 21 elements on a 14 1/2 foot Boom and provides excellent gain and F/B performance. Separate systems with nearly zero interaction between the two antennas. This antenna can be used to receive the ham satellite communications with any portable UHF receiver. Matching is excellent on all three bands and can be tuned independently. I am working with others in my area on a 2m/440 simplex network for emergency situations. A Parasitic Lindenblad Antenna for 70cm 3 AMSAT PROCEEDINGS 2006 Abstract A traditional Lindenblad antenna uses four, dipole, driven-elements to create a circularly-polarized, omni-directional radiation pattern. Find Amateur Antennas & Accessories by Comet, Diamond Antenna & ZeroFive Antennas at GPSCentral. Ground Plane Antenna Plans for 146 MHz, 220 MHz and 440 MHz Solder an inch or so copper tube into the center post of your connector. right, circ. Softening the Tubing 4. Add to Cart. The smaller antenna below is for my local UHF-band TV stations, all only a few miles away. This 70cm yagi was constructed after I had decided that my 4-element 2m aerial was just too cumbersome. I cannot recommend a 10/6 antenna, but for 2m/70cm, I love my Tram 1185 magnet mount. BAZ fabricates Hybrid Double Quad directional antennas for the 2m range. For completeness this is not the only DIY tape measure Yagi on Instructables so also check out [FN64’s] 2 m band “Radio Direction Finding Antenna for VHF” and [manuka’s] 70 cm band “433. Simple stacked J-pole for 2M & 70cm Following the death of my cheap fibreglass tri-band collinear, I decided to have a go at constructing a simple dual band antenna for use at home. Hello all and good morning, I am looking for some advice on how to run my lightning grounding for my base antenna that will be attached to my chimmney, my house is 2 stories tall and the shortest distance from the chimney to the edge of the roof down to the ground is on south side of the house but where my shack is is going to be on the. The testing was very simple. Use our simple calculator to determine approximate dimensions of materials needed to build a 3-element Yagi/Uda antenna, and then shop for your needs on our other pages and select from our inventory of aluminum, fiberglass, coax, connectors, and other parts and accessories for amateur radio and other radio applications. I was looking for something that was vertical, omnidirectional and with good gain that I could make quickly and easily. This sketch shows a semi-exploded view of the antenna. · Water Antennas · Yagi antenna design prg for 144 mhz and up WA2TIF · ZS6EZ: Amateur Radio Home Page. To scale this antenna for any other VHF/UHF frequency, read the ARRL article (. This is so I can use my 2m and 70cm handheld in the car. 3 GHz HB9CV 4el Yagi - note the antenna resonant frequency is 2. The G0̸KSC antenna on my roof. 75 dBd gain. You can use one common feedpoint or two seperate feedpoints depending on how you would like to connect this antenna to your transceiver. Satellite Yagi 2m 70cm Tape Measure Antenna Homebrew - First Built a Yagi 2m 70cm Tape Measure Antenna for amateur radio satellites but this video shows me having a QSO of a repeater Tape Measure Yagi Beam Antenna - Ham Radio Q&A - Duration: 9:09. Depending on the mounting location, coax used etc. 2-dB difference for 145. It was a lot of fun working hilltops, strictly FM though - I've never worked anything but FM on 2m or 70cm. Due to material, I decided on a 5 element Yagi built for VHF since all I would have to buy is more 3/8″ round stock. 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. This is reputed to be a re-badged Moonraker antenna (see above). The FT-817 is a bit short of power but maybe a decent portable antenna will help!. I needed two stainless steel selftapping screws and my eye fell on the 3 element yagi that I constructed for 2m operation. Aug 7, 2019- Explore centerfirenotw's board "homebrew antennas" on Pinterest. (Make sure the one end Female that can be mounted thru a hole. The 70cm yagi. No-compromise yagi for 2m and 70cm, consisting of a 3-element yagi for 2m range and a 6-element yagi for 70cm. 3 GHz HB9CV 4el Yagi - note the antenna resonant frequency is 2. Since an old 5 element version (v1) of my antenna was shown in the July 2011 edition of RadCom, a few people have contacted me asking for some information on how it was constructed. As the HF bands drop off, I have decided it is time to up my portable capabilities on VHF. The 70 CM band may be limited. Used, 14 el dual band YAGI for 2m and 70cm (144-14. Cushcraft 2M/70cm Wideband Yagi Beam Antennas. Having already tried out 6m with some enjoyable success, the option is to move to 2m or 70cm, the latter having shorter antennas but more critical dimensions, and the former being larger but more tolerant of…. 14 el dual band YAGI for 2m and 70cm (144-146 yagi 5el antenna in good conditions. SIMPLE ¼ WAVE ANTENNA FROM PL259 (SOT239) A VERTICAL ANTENNA FOR ALMOST NOTHING IN A FEW MINUTES. The problem with both antennas is that while they both work fine on 2m the 70cm band does not really cover the entire band. This makes the two invis- ible to each other. com: 2m 70cm base antenna. Pass the coax through the hole, leaving the BNC connector's base in the hole. A Five-Element, 2-Meter Yagi for $20 element to the boom and discard the ele-ment. So I narrowed it down to a simple half-size 2-element "Yagi". This antenna makes a thoughtful gift for the two-way radio enthusiast in your life. HT Antenna yagi. 75 dBd gain. schemas/yagi_vhf_antenna. HTEK Dual-Band 2m/70cm Yagi. Aug 7, 2019- Explore centerfirenotw's board "homebrew antennas" on Pinterest. The X-Quad is an improved design of the well known multi element quads. Shintaro Uda. To scale this antenna for any other VHF/UHF frequency, read the ARRL article (. 2 Ghz 10 element yagi antenna. Ground Plane Antenna Plans for 146 MHz, 220 MHz and 440 MHz Solder an inch or so copper tube into the center post of your connector. HYS Dual Band VHF UHF 2m/70cm Antenna with SO239 Connector for 136-174Mhz&400-470Mhz Ham Radio. 2+3 element 2m (145 MHz) and 70cm (435MHz) duoband ultra portable yagi’ by ok1cdj. R&L Electronics: 2m/70cm 3/5. DIY 5$ 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. My Arrow-Style VHF/UHF Portable Satellite Antenna By: Bertrand Zauhar, VE2ZAZ One of the pleasure of working the amateur radio satellites is making contacts in a portable application and with QRP power. Version 1: 144-146MHz broadband. Softening the Tubing 4. Virtually no ham antenna article today lists all the materials, tools and specific building instructions so that a beginner can build it. Cushcraft's multiband directional yagi is designed to provide hobbyists who have limited tower or mast space with directional antenna performance on three of the most popular bands. details about hoxin hb fox two band base beam antenna yagi 8 elements 2m 70cm ham radio. Following on from the 2m 7 ele Yagi, I want to start moving up in frequency. We have good repeaters, but assume they will go down. What it does is: A Yagi almost never has an impedance of 50 ohms. Picture shows bay of four Antennas. Since an old 5 element version (v1) of my antenna was shown in the July 2011 edition of RadCom, a few people have contacted me asking for some information on how it was constructed. So I narrowed it down to a simple half-size 2-element "Yagi". All the elements of this Yagi antenna are made of solid aluminium, only the dipole elements are made of aluminium tube, recycled from clotheshorse, so that in a moment, with a vice, I pressed the ends where I connected the cable RG58. Enter the desired frequency then click on Calculate and the optimum values for that combination will be displayed in feet, inches and fractions of inches, and in meters. Now it's time to step it up (just a little bit) and fabricate a bigger antenna. Above that are the VHF/UHF antennas. This page contains construction details on a 2 metre 144MHz VHF Yagi beam antenna, designed for portable use. You are eligible for a full refund if no ShippingPass-eligible orders have been placed. 42-43 Boost the range of your 2M/70cm handheld transceiver with this simple dual band Yagi--no soldering or coax connectors required! A Compact Multiband Dipole QST March 2016 pp. Recommendations for a dual band 2m/70cm balconey antenna? I also had a three element 2 meter yagi as well, and could talk 2 meter simplex with my friend 22 miles. 3 Element HF Yagi for 21 and 28MHz. What are the reasons for stacking anyway? 2. Many RASON members truly enjoyed last month's collinear antenna. Hi there I like to build a Homebrew 2m, 70cm mobile antenna with a BNC plug to put onto a magnetic base that has the BNC ready for it. com under. Your Ham Shack Pictures, Blogs and Projects. Cushcraft A-3S TRI-BAND HF BEAM ANTENNA. DBJ-1 Dual Band VHF/UHF 2 meter/70cm ham base antenna. Learn More. Though disappointed in losing, it did prove to Kent that the antennas can be easily replicated with consistent performance. Fortunately, I suspect more thanks to DK7ZB's design than to my skills, the antenna was right on the button when installed on my roof with SWR's of 1. Building and experimenting with antennas can be an interesting part of the radio hobby. 6 out of 5 by 129. The UHF Yagi RFI range of high gain yagi antennas feature standard aluminium, ruggedised aluminium or stainless steel construction. 2m and is equipped with a female UHF connector (SO-239). For quick and easy communications up to 200 miles or more, the new 2M HO LOOP provides an omnidirectional, HORIZONTALLY polarized signal ideal for mobile and base operations on sideband and CW. The moxon can be further simplified by also eliminating the yagi's boom support. I need to think what I "need" more at the moment. The main category is Antennas for 2 meters band that is about Antenna projects for 144 MHz. the 2 meter beam. The A6270-13S combines 6 meters, 2 meters and 70 centimeters on one boom. This VHF-UHF antenna measures approximately 1. 10W Micro-Diplexer for 2m / 70cm. Due to material, I decided on a 5 element Yagi built for VHF since all I would have to buy is more 3/8″ round stock. HT Antenna yagi. If you mount QST Deva'úžd January 2012 37. What does this mean? Remixing or Changing this Thing is allowed. Having already tried out 6m with some enjoyable success, the option is to move to 2m or 70cm, the latter having shorter antennas but more critical dimensions, and the former being larger but more tolerant of…. Dual Band Yagi antenna 2m/70cm This antenna already keep it in my store for long time, It is time to "make up" Hi hi. The AIS antenna is aligned with the two other antennas to minimize any pattern disturbance. 2m and is equipped with a female UHF connector (SO-239). 5 MHz, and within 0. The duplexer will permit instant band chages. homebrew j pole | Tuned for 89MHz in the FM broadcast band. Match the end with the raised circular portion of the connector. Most Comet mobile antennas over 29″ length have a fold-over hinge built into the base section of the antenna. This VHF-UHF antenna measures approximately 1. This method can be used to improve several common amateur antennas: the dipole, monopole and the yagi. For contests, I mount a 6m Moxon, 2m, 1. All boom beams and items are surface-hardanodized. So, what is everything else I need, and instructions on. Pass the coax through the hole, leaving the BNC connector's base in the hole. Right now it is super 2m+70cm+antenna: 2m+70cm+antenna. A single antenna can cover the entire amateur 2m/70cm allocation with more than acceptable SWR. So why not mix the two up and make a nice Yagi driven with a folded dipole? This 12 element monster is easy to make and produces a theoretical 12. hoxin hb fox two band base beam antenna yagi 8 elements 2m 70cm ham radio |. (Some other designs have two feeders which would be a pain with my rigs. 6 out of 5 by 129. Since satellite work is concentrated in the 145. The main part of the antenna is all one piece. 2 Ghz 10 element yagi antenna. This is designed for stationary use. Now it’s time to step it up (just a little bit) and fabricate a bigger antenna. 4 GHz DL6WU Yagi WA5VJB 2. Dual Band Antenna V~UHF (High Gain) VHF Vertical Antenna; Portable Yagi for 2M and 70cm. VHF and UHF antenna fundamentals Almost all of the fundamentals we have discussed so far are equally true for all the HF bands and VHF up to about 70 mHz. 3g/4g/lte low profile/phantom antenna; yagi antennas. New Home of the Force 12 Antennas. While this antenna is designed for VHF two-meter operations, it can easily be redesigned for other frequencies like 1. Software modeling programs show that this antenna should have a gain of 7. Multi-Band Yagi. Pass the coax through the hole, leaving the BNC connector's base in the hole. A627013S 6 Meter / 2 Meter / 70 CM Cushcraft's multiband directional yagi is designed to provide hobbyists who have limited tower or mast space with directional antenna performance on three of the most popular bands. Picture shows bay of four Antennas. This makes the two invis- ible to each other. Quick View. Typical tubing diameters for the 2m and 70cm bands are from 0. This is reputed to be a re-badged Moonraker antenna (see above). Ignore the ruler — it should read 22-¼ (from the top), not 19 (photos taken on first try). I am working with others in my area on a 2m/440 simplex network for emergency situations. If you have any questions about this project, contact [email protected] Moxon 2m + 5el yagi 70cm , dualbander I am operating via satellite SO50 for a week using Baofeng UV-5R plus two band Moxon-Yagi antenna with very good results: ES5CC ES6SW ES6DO LY2SS G6AHX ON5NY OM7OM DG0ER F0EQE RX3QQL RW3ADB F5HO LZ1KG ON2VHF. this is the best dual band j-pole ever built 2m - 70cm direct connection beam dimenisions. For the best results and lower flat SWR throughout the bands, use RG213 or better and cable lengths to match your frequency. right, circ. 20 ft of window line provides a low SWR on 10 and 20 meters. You are eligible for a full refund if no ShippingPass-eligible orders have been placed. Pen shows the point where the PVC Radome will be cut. Antenna plans is available at my website @ https://dw1zws. The A627013S combines 6 meters, 2 meters and 70 centimeters on one boom. Covering 144 Mhz - 146 Mhz and 430 Mhz to 440 Mhz. Here I used Brass strap for the Radials. SIMPLE ANTENNAS - MY HOMEBREWS; 3 ELEMENTS YAGI (you can see and try to make it) All Bands Vertical Antenna-HF (homebrew) MY DX FOR FEBRUARY 2011; My 4 element monoband Yagi ( 28Mhz) My Homebrew 3 Elements 20m Monoband Yagi; EASY ROTARY DIPOLE FOR 10m, 15m , 20m; My 2 elements 15m and 20m monoband Yagi. Product Description. Since an old 5 element version (v1) of my antenna was shown in the July 2011 edition of RadCom, a few people have contacted me asking for some information on how it was constructed. Efficient 2 meter Disguise Antenna. Today's favorite home-built two-meter radio-orienteering beam among newcomers is the 3-element yagi documented at WB2HOL's Web site. 11 element 144 MHz Contest antenna, 6 meter boom. Introduction 2. Build a Yagi (dual band is tricky) or a Log Periodic for a beam, or try a quagi. Posted on September 25, 2012 by aaronrryan. This antenna seems to work ok. · Water Antennas · Yagi antenna design prg for 144 mhz and up WA2TIF · ZS6EZ: Amateur Radio Home Page. Can also operate in reception only, from 100 to 200Mhz and 400 to 500Mhz. 1/2" measuring tape is used and boom/element spacing is adjusted. See more ideas about Ham radio antenna, Ham radio and Ham. 2-Meter antennas by ARRL:. We have good repeaters, but assume they will go down. If antenna is expensive no problem home brew it yourself. Dual-Band 2m and 70cm Yagi antennas. 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. J-Pole Antenna Dual Band Antenna for 70cm and 2M. Matching is excellent on all three bands and can be tuned independently. Found a simple plan online and I used a piece of scrap wood for a boom and some 12 gauge copper wire that I had left over from another project for the elements. (70cm) + 7 El. If you decide to make a 2m antenna, you’ll end up with 1. What are the reasons for stacking anyway? 2. pdf) by W1TRC HERE. 5 MHz, and within 0. (Step-by-step instructions with photos can be seen below, following the project description and safety disclaimer. 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). Starting out in the HAM radio craft is challenging, mostly rewarding but can be aggrievating and disappointing when trying to make the little 2 Meter work outside its parameters. All boom beams and items are surface-hardanodized. Okay, enough of UHF/GMRS antennas. HT Antenna yagi. Each antenna was tested at the same height and using the same radio. Depending on the mounting location, coax used etc. A computer optimized UHF 70 cm Yagi antenna for radioamateurs, transmitting and receiving on 420 Mc - 430 Mc - 440 Mhz to 450 Mc with this beam in high gain Db's! ON6MU: UHF 4/6/10 Element Yagi Antenna for 70-cm. The Multiband Yagi RFI range of high gain yagi antennas feature standard aluminium, ruggedised aluminium or stainless steel construction. MFJ-1760 Yagi antenna, 2m/70cm, 3+5 element Ailunce AY01 Yagi Antenna Base Station High Gain UHF-Female Walkie Talkie Antenna for Retevis H-777 RT-5R RT83 Ailunce. 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. Independent element type ensures good gain and performance in comparison with mono band beams. 25 meter, 70 cm or 33 cm. While not as good as the first , it still shows promise and anybody could build it. The Elmer that checked this antenna for me said "don't touch it, put it up". A long time ago I did build a small Yagi for 2m using a wood boom. Go to the remaining wire on the 58-inch element; its opposite end at-. Yagi's name appeared on the 1926 US patent application. I am working with others in my area on a 2m/440 simplex network for emergency situations. Find Amateur Antennas & Accessories by Comet, Diamond Antenna & ZeroFive Antennas at GPSCentral. com: 2m 70cm base antenna. Dual Band Antenna V~UHF (High Gain) VHF Vertical Antenna; Portable Yagi for 2M and 70cm. 70cm 10 el Yagi. Moonraker was established in 1978. This is truly a game changer, revealing those yagi antenna designs that really are low noise. Search Results for MULTI BAND VHF UHF BASE. What does this mean? Remixing or Changing this Thing is allowed. I decided to build the simplest of our four Yagi antenna first - the M2 Antenna Systems 440-21 ATV. A Five-Element, 2-Meter Yagi for $20 element to the boom and discard the ele-ment. F23A 2M Base Vertical: X220A 2M/1. view all yagi antennas; vhf yagi antennas; uhf yagi antennas; 900 mhz yagi antenna; quarter wave antennas; das antennas; two way radio antennas; vehicular multiband antenna. I'll include a link to the ebay listing I purchased. New Home of the Force 12 Antennas. Multi-Band Yagi. Ultimate design with with latest professional full-3D electromagnetic modelling software. I've seen designs in which they are in the same plane. This antenna is unique in that it is enclosed entirely in 3/4" PVC which makes the design a little more complicated. Since then we have become the largest manufacturer of Amateur, CB, and Scanner antennas and accessories in the UK We are also the largest local authorised dealer for Alinco, Kenwood, Icom, Yaesu and Wouxun. Welcome to Elk Antennas! Log Periodic Antennas for the Radio Amateur 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. Dual Band VHF/UHF Slim Jim Antenna. Here, you'll find links for high gain antennas covering vhf-uhf. We will briefly discuss. Both are installed in the attic and I was hoping to replace the jPole with this antenna. This pattern is ideal for accessing LEO satellites and can often eliminate the need for beam antennas and Az/El rotator systems. Using the nut that came with the BNC connector, affix the connector to the bicycle hand grip. 2m/70cm Dual Band J-Pole by KK4ICE. Add to Cart. Since an old 5 element version (v1) of my antenna was shown in the July 2011 edition of RadCom, a few people have contacted me asking for some information on how it was constructed. HOMEMADE ELECTRONICAL CIRCUITS AND ANTENNAS homebrew projects Home made No frames supported page. details about hoxin hb fox two band base beam antenna yagi 8 elements 2m 70cm ham radio. 2m and is equipped with a female UHF connector (SO-239). The 2m/70cm yagi is now fully operational. Made From a TV Satellite Dish. GAMMA MATCH. 92 MHz Yagi Antenna - Unknown Author Drill or cut a small hole in to the bicycle hand grip so that the BNC connector will fit. Typical tubing diameters for the 2m and 70cm bands are from 0. Or one can build a simple dipole or ground plane for omnidirectional work. TAPE MEASURE YAGI #3 Same basic design as #2, but cut for 70cm. (Some other designs have two feeders which would be a pain with my rigs. Depending on the mounting location, coax used etc. Dual band 2m/70cm yagi and 13cm yagi. The pattern will be circular within under a 0. By the way, the 2 meter 3 element Quad homebrew version is described here very nicely. My main shack location has a commercial J-Pole Dual band mounted on a short mast. Directional antennas for bands from 6m to 70cm by EAntenna. They also make a great educational project to demonstrate antenna concepts like gain and front to back ratio for an amateur licence study class. But if you’re the crafty type and enjoy a good challenge, you may want to homebrew your own antenna. Portable 4 element 2m (145 MHz) DL6WU Yagi for SOTA weighing 460 grams (1 lb) Materials: 4 metre length of 3. Learn More. HYS Dual Band VHF UHF 2m/70cm Antenna with SO239 Connector for 136-174Mhz&400-470Mhz Ham Radio. I didn't have to worry too much about the weight of the antenna, since I was driving, not hiking. Homebrew Antenna. For a typical dual-band “base” VHF/UHF antenna designed for exterior mounting on a structure or mast you can expect to pay from $35 to $300, depending on quality, durability, and performance factors such as gain. It's a lightweight beam for 2m and 70cm. org The … K6MYC on Antenna Testing. The Antenna Farm : 2 Meter Yagi Antennas - VHF & UHF Mobile Radios Radio Accessories VHF & UHF Hand Held Radios Antennas Mobile Antenna Mounts SWR/Power Meters Adapters Coaxial Cable Two Way Accessories Antenna Accessories DC Power Supplies Coax Cable Accessories Amplifiers Connectors Aviation Radios Repeater Systems Towers & Accessories Scanners & Receivers Duplexers Diplexers & Triplexers. 14 el dual band YAGI for 2m in Good condition, no damage. Also, it makes an excellent school, club or Boy Scout project. That includes UHF CB. fers the fixed-antenna user the chance to build a successful beginning satellite an-tenna. DBJ-1 Dual Band VHF/UHF 2 meter/70cm ham base antenna. SIMPLE ANTENNAS - MY HOMEBREWS; 3 ELEMENTS YAGI (you can see and try to make it) All Bands Vertical Antenna-HF (homebrew) MY DX FOR FEBRUARY 2011; My 4 element monoband Yagi ( 28Mhz) My Homebrew 3 Elements 20m Monoband Yagi; EASY ROTARY DIPOLE FOR 10m, 15m , 20m; My 2 elements 15m and 20m monoband Yagi. The Yagi has three forward lobes (according to the three current maxima in the 3/2-lambda-radiator) with 5,39dBd - 4,35dBd -5,39dBd gain. 6 MHz), 70 cm (420-450 Mhz), and post February 2009 UHF-TV bands. There are many websites that will calculate the length of and length between the elements on a Yagi-Uda antenna. This page covers 3 element Yagi Antenna calculator. Antenna plans is available at my website @ https://dw1zws. Although originally designed for 137. 3 elemente 2 Meters and 5 elements UHF. The 2-7-20 is quite literally it's title, it is a 2M antenna that should cost less than £20. It is important to note that …. Welcome to the Diamond VHF/UHF Yagi/Beam antenna page. This antenna meets the demands set by ARES/RACES group for ruggedness, easy deployment, and performance. DIY 5$ 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. Dimensions for building a Homebrew Sirio Gain Master using RG‭58. A Quagi antenna is a variation on the venerable Uda-Yagi, which dates back 1926. No physical connection between the 2m and 70cm elements. I like making antennas so here is the oportunity to make one and probably operate something (don't expect that 5w will be enough but since they have big ears we never know) since I never operated SSB on 70cm band. will become the base for your. 2m/70cm Dual Band J-Pole by KK4ICE. As the HF bands drop off, I have decided it is time to up my portable capabilities on VHF. A portable 2-element VHF yagi May, 1997 Here's a simple Saturday project: build a portable VHF yagi antenna for 2 meters. 3 elemente 2 Meters and 5 elements UHF. HRO catalog lists the mobile one at unity gain, but no figure on the base job. The 2nd 432 element is a parasitic driven element. Will be sent by insured courier service from Glasgow. homebrew j pole | Tuned for 89MHz in the FM broadcast band. It's a lightweight beam for 2m and 70cm. If you decide to make a 2m antenna, you’ll end up with 1. Recently I started to operate in the VHF band with all the limitations due to the urban life­style, as the lack of free access to the roof… the enemy number one of ourselves OM!. Tuned to 445 MHz, the UHF band J-Pole antenna covers the upper half of the 70cm amateur radio band, which includes the repeater, remote base, link control, and simplex allocations of this band. The parts below are what I used to build the antenna, but you can substitute most of these parts with whatever you have around your house. "Local" in Crosby, North Dakota, means 50. 50 watts into a 10 dB gain yagi yields an ERP of 500 watts, and it will. Diamond antennas make great vertical antenna for 2m/70cm/6m, High gain antennas made from the best materials made to last and the market leader in ham radio antennas,We sell Diamond Anteenas at the best prices with large stocks and fast wotrldwide delivery. For the best results and lower flat SWR throughout the bands, use RG213 or better and cable lengths to match your frequency. In addition, specific models mentioned in the Antennas forum Like diamond antennas,and more are here for future reference. The antenna has a UHF connector and accepts a mast diameter of 1. to turn it on top of a 25 foot TV mast. Your Ham Shack Pictures, Blogs and Projects. I'm thinking to do a 3-element 2M and a 5-element 70cm design, and I'd like to make the entire thing no more than 36" long. J-Pole Antenna Dual Band Antenna for 70cm and 2M. Homebrew 70cm Yagi I built a simple six element 70cm Yagi antenna today in hopes of hearing some of the mounbounce signals from the Arecibo radio telescope in Puerto Rico on Apr 16, 17, 18. 4 GHz 10 el. for emergencies (like Hurricane Isabel), as I could point the antenna towards the repeater/net control, and if I don't need the extra gain, I can just cut back on my power output and conserve battery power. com - The full service computer and amateur radio store. A really ‘Hen’ double band 2m­70cm wire hentenna. SIMPLE ANTENNAS - MY HOMEBREWS; 3 ELEMENTS YAGI (you can see and try to make it) All Bands Vertical Antenna-HF (homebrew) MY DX FOR FEBRUARY 2011; My 4 element monoband Yagi ( 28Mhz) My Homebrew 3 Elements 20m Monoband Yagi; EASY ROTARY DIPOLE FOR 10m, 15m , 20m; My 2 elements 15m and 20m monoband Yagi. This antenna seems to work ok. I love a good Yagi. The N5WVX 2 Meter 7 Element Yagi with a "Twist" ( Cool Elements) Based on the 2 Meter Beam Project by Larry Morgan, AG5Z.