This is post 2385 in a continuing series of simple ham radio antennas. If you want a basic two-element curtain array, try this "Lazy H" antenna from Hiram Vazquez. The "classic Lazy H Antenna" consists of two horizontally-polarized dipole elements which, under excellent conditions, can deliver up to 3.42 dBd over a standard dipole antenna.For your situation, a Diamond X50A is a good choice and a simple duplexer from Diamond or Comet should do the job. Another option is to use a tri-band vertical so you can work 23 cm, as well. These may be too tall for your attic. Another 2m / 70 cm option is the Diamond X-30A, about one foot shorter than the X-50A. Some folks like the dualband ...To make it more durable, I decided this time, I would build the antenna from a piece of wood for the backbone, and with copper pipe for the elements as it is easy to cut. A trip to my local Bunnings, and I had left with: Porta 40 x 18mm 1.2m Pine DAR Clear Solid AU$7.58. Porta 12mm x 0.9m Clear Pine Dowel AU$2.45.Dual band antenna 2m 70cm applications: The big wheel is a horizontal polarized omni directional antenna. Perfect gain and swr on both bands. 2m shows a 38.5in driven element but with the bent part the wire would be 57.75in long? It's a really great omni antenna for the 2m band. Source: img.17qq.com. Stacking of big wheel antennas to …•Cut the 70cm rod at 432 𝑖 𝑀𝐻𝑧 ×6for inches length (starting point) •Start the bracket down the EMT at 705 2 𝑖 𝑀𝐻𝑧 ×12–1 for inches from top (starting point) You will then need an antenna analyzer or a VNA to measure SWR and do trimming and adjusting 12A while back I purchased an Ed Fong dual band (2M/70CM) DBJ-2 antenna for field use. Roll up "slim jim" antennas are an excellent choice for your go bag. ... Not finding anything on the market, I decided to build my own packable PVC antenna. You should be able to figure out how to assemble the mast from the parts list below. All of this ...For use on 2nd story balcony with an HT radio (DMR + Analog). Seeking something capable of at least a 12 mile radius and in a suburban area. Other buildings in the complex are two stories as well. Three antennas on my short list are the Ed Fong 5ft antenna, a J-pole, and a 17in Chinese dual bander from eBay.TWAYRDIO Yagi Ham Radio Antenna,Dual Band 2m 70cm VHF UHF Yagi,High Gain 8 Elements GMRS Vertical Base Antenna for Repeater System,HT Scanner,Satellite Work . Visit the UAYESOK Store. 4.0 4.0 out of 5 stars 74 ratings | Search this page . $98.99 $ 98. 99. FREE Returns .Six Meter Folded Dipole Antenna; 2 meter/70 cm telescopic dipole, homebrewed; Simple to make 2m/70cm antenna project for portabl... Homemade Full Wave Dual Band Antenna for 2 meter a... MFJ Duplexer-two radios one antenna or vice versa; Idiot's Guide to Wire Antennas; My low cost 10 meter DIY; Ground Radials for Vertical AntennasBuild it yourself a Dipole for 2M/70CM - Got time on your hands because of the Covid19 lockdown well time to build.. You can build this anytime Ham Radio 14...This antenna is perfect for those hams living in the primary coverage area of the repeater for 2 meter use. This antenna is nothing more than the old standby "Droopy Groundplane" and can be used on any band where it's physical size does not pose a problem. Remember that the vertical radiator is 1/4 wavelength long at your operating frequency.Ham Radio 2m/70cm Vertical Dipole Antenna; 15 Metres Simple DX Antenna; Windom Antenna; Is the J-Pole the ultimate 10 meter band vertical ... The Amazing Delta Loop Antenna. DX-Mass Tree Light Dipole; Top 10 easy to build HF wire antennas; How to design and build a 70cm DIY loop antenna; Loop on the ground antenna, is it any good?I came up with the idea after building several simple outdoor 2m/70cm yagi-style beam antennas (using a 1″x2″ wooden boom for support) and realized it could be adapted for indoor use. ... the supplied rubber-duckie antenna, (2) a top-rated 15" whip antenna (Nagoya NA-771 15.6" dual band) , and (3) this homemade antenna, the results were ...Rated 5.00 out of 5 based on 13 customer ratings. ( 13 customer reviews) $ 65.00. The Signal Staff is a dual band 2 meter / 70 cm Open-Stub J-pole from S&K Antenna Systems! This is a new antenna for us here at Signal Stuff made by S&K Antenna Systems who are friends of ours and have assisted in many aspects of Signal Stick manufacturing!Here i present the measured SWR of the antenna. As you can see, the impedance of the antenna is very well matched to a 50 ohm system. Between 144 MHz and 146 MHz, antenna has an SWR less than 1.2 . For an SWR of 2, the antenna has a bandwidth from 138 MHz to 151 MHz which is a pretty good result. F4HWKA coaxial Collinear antenna for 2m and 70cm mostly made from junk bits and pieces for less than £1 - YouTube. Oxford Shortwave Log. 9.13K subscribers. Subscribed. 100. 10K …The 2-m/70-cm combination presents a different challenge because the frequency ratio is about 3:1. Consider two dipoles, cut for 20 and 10 meters. We can easily use both dipoles with a common feedpoint. The reason is fairly simple: when one dipole shows a low impedance, the other shows a high impedance.The antenna has an SWR of roughly 1.8:1 at resonance (see Figure 2). However, the SWR stays close to 2:1 across the entire 2-meter band. Modern 2-meter rigs can handle this easily, and the losses are quite small at an SWR of 2:1. In the true spirit of homebrew simplicity, matching is not called for,One could always build a multi-band antenna with LC "band traps" which is commonly used in the 80-10 meter bands. Even at HF, experience builders of LC traps ... (2 meter, 220 MHz and 70cm meter) antenna by J.L. Harris [3]. It was a stacked Tri-band J-pole antenna as shown in Figure 4. It is basically 3 parallel J-poles where the coax for70cm/2m antenna build, method of how I built it and tested it. #hamradio #satellite #FM #moxon #yagi #SO-50 #ham #2meter #70cmHow to build a ham radio tri-band 6 meter, 2 meter & 70 cm yagi beam antenna using an old TV antenna for parts. A simple design using dipole driven elements....The Diamond Antenna X50A / X50NA is a dual band 2m/70cm high performance gain vertical base antenna for base/mobile two way radios. Diamond Antenna X50A and X50NA mobile antennas for dual band UHF/VHF transceivers; Bands: 2m (144-148MHz), 70cm (440-450MHz) Gain (dB): 4.5/7.2; Watts: 200W; Available with either UHF female (SO-239) or Type N ...Hi there, G1ZMA kindly decided to build me another antenna for 2m and 70cm and here it is. Amazing what you can achieve with a metre and a bit of old RG58 an...As far as the radiating elements they are. 2M=19.5” 70cm=6 5/8”. This is measured from the lowest point of the U to the tip. Where your coax splits and connects to the elements is where the antenna length will be. Leave about 1” gap so you can move them in and out to tune with swr meter. Awesome, thank you.Includes Ground Plane Radials. The Laird MBCN is a Mobile to Base Station Antenna adapter for use with VHF and UHF antennas. The kit includes NMO to N-Female adapter and (4) 22 inch long ground plane radials. NOTE: Whip antenna, mounting pole and coaxial cable are NOT included. www.arcantenna.com.Here are some of Mike's comments. A really quick antenna for 2 metres and 70 centimetres, made from just 2 metal coat hangers and a small length of strip connector just add the fun. Next time coax traps on the DX commander I do hope you enjoy it and subscribe for more.. Many thanks Mike - M0MSN To get notified of the next upload .click that ...Building a high performance 3 Elements lightweight end mount Yagi antenna for 70cm UHF band centered at 435 Mhz. This Yagi build exhibits a gain of 7.66dBi at the center frequency 435Mhz for use in the Philippine UHF amateur band. Front to back ratio is 18.5dB, Vertical Beamwidth 106°, Horizontal Beamwidth 64°. Just like my […]This is post 2441 in a continuing series of simple ham radio antennas. If you want a fun and educational antenna experience, please try this 2 meter Halo Antenna Kit from Moonraker.eu. Matt from "Tech Minds" takes us step-by-step through the assembly and testing process for this omnidirectional, horizontally polarized VHF antenna.An upgraded version of the Vhf dipole antenna. Now made dual band vhf/uhf by 2 dipoles in parallel. Reflector elements can be added if slight directivity is...DIY Build instructions Dual Band 2m/70 cm Vertical Ground Plane Antenna Coastal and SLV ARES Amateur Radio Emergency Service Page | 1 The operational frequencies for …The new 2M/70cm has higher gain and is mounted 10 feet higher than the previous antenna. The 6M HO Loop is very narrow-band, but the SWR is nearly perfect at 50.3 MHz, so it will be great for digital and CW work. I did tune to 50.313 MHz and could hear and decode lots of FT8 from stations participating in the ARRL June VHF Contest.Step 2: Design. A: 275.7mm. B: 746.2mm. C: 103.7mm. D: 29.8mm. E: 142.2mm. The construction itself is very simple; measure and cut all pieces to length, sand down the ends lighty to remove any burr, apply solvent and pressure fit. It is worth doing a dry run to make sure all measurements meet above figures before gluing and you may find the ...One could always build a multi-band antenna with LC "band traps" which is commonly used in the 80-10 meter bands. Even at HF, experience builders of LC traps ... (2 meter, 220 MHz and 70cm meter) antenna by J.L. Harris [3]. It was a stacked Tri-band J-pole antenna as shown in Figure 4. It is basically 3 parallel J-poles where the coax forThis dual band (2m/70cm) antenna is easy to build and will give you a bit more gain than a 1/4 vertical whip. This variant of the popular "Slim Jim"/"J-Pole" …The antenna is constructed from M4 stainless steel threaded rods, as they are relatively inexpensive and common place at most DIY stores. Additionally, it is an easy material to work with and does not require any special tooling. The boom is constructed it from 10mm2 aluminium box section, again it’s cheap and stocked in most DIY stores.Today we’re going to build a simple ground plane for the VHF 2 meter band. Ground plane antennas are easy to recognize by their appearance. First off you’ll notice the radiating element. This element is 1/4 wavelength long, or about 19 inches for the 2 meter band. Next up are the ground radials. a ground plane will often have three or four ...52-1BP. Dipole for 6m with split boom. With holes and optional elements for 6m, 2m, 1.25m and 70cm. This allows one boom to be carried for all those bands. This antenna was designed for SOTA. 10W. Micro Duplexer for the 146/437-10 Satellite Antenna (10 Watts) (fits inside the handle) 437X14.I show you how to quickly build a DK7ZB yagi with 4 elements on 2m and 5 elements on 70cm with minimal tools.Plans are available from https://www.qsl.net/dk7zb/DIY - 2m/70cm Groundplane im Selbstbau. Da es mir aktuell an Antennen mangelt, ich aber die Relaissteuerung bzw. auch die Funkgeräte für das Relaisvorhaben testen möchte, habe ich nach einer einfachen und kostengünstigen Antenne gesucht, die insbesondere für den Empfang gedacht sein sollte.Six Meter Folded Dipole Antenna; 2 meter/70 cm telescopic dipole, homebrewed; Simple to make 2m/70cm antenna project for portabl... Homemade Full Wave Dual Band Antenna for 2 meter a... MFJ Duplexer-two radios one antenna or vice versa; Idiot's Guide to Wire Antennas; My low cost 10 meter DIY; Ground Radials for Vertical Antennas2m/70cm is pretty easy... almost anything that works well on 2m will work fine on 70cm, and a lot of designs are balanced between the two. To get all three though, it gets a bit trickier. Easiest solution is to build/buy a discone. The biggest issue with moving your VHF+ antenna further away is that coax losses are pretty high on UHF.I've been wanting to make this video for a while. This little handheld 2m/70cm Yagi is an easy build, and it performs really well on both bands. I've worked ...This is a really easy, fun antenna to build. If you are new to Amateur Radio, or just want an easy to deploy 2 Meter antenna for out in the field, this is a...Dual Band 2m/70 cm Vertical Ground Plane Antenna. The operational frequencies for this antenna are within the VHF/UHF amateur radio bands; 2-meter band including frequencies from 144 MHz to 148 MHz, and the 70-centimeter band including frequencies from 430 to 440MHz. Because of the dual band capability, this antenna could become your primary ...Authentic Genuine Nagoya NA-320A Triband HT Antenna 2M-1.25M-70CM (144-220-440Mhz) Antenna SMA-Female for BTECH and BaoFeng Radios. 17,720. 500+ bought in past month. $2098. List: $26.99. FREE delivery Tue, Apr 2 on $35 of items shipped by Amazon. Or fastest delivery Wed, Mar 27. Only 6 left in stock - order soon. Small Business.Includes Ground Plane Radials. The Laird MBCN is a Mobile to Base Station Antenna adapter for use with VHF and UHF antennas. The kit includes NMO to N-Female adapter and (4) 22 inch long ground plane radials. NOTE: Whip antenna, mounting pole and coaxial cable are NOT included. www.arcantenna.com.Is this dipole antenna be afective on 70cm? It will resonate and show good SWR, but the emitted pattern will be more like a 4-leaf clover, with a null near the horizon (if vertical) or directly broadside if horizontal. I built the exact same thing and had an swr of nearly 1 on 2m but it was about 3 on 70cm.Ham Radio 2m/70cm Vertical Dipole Antenna; 15 Metres Simple DX Antenna; Windom Antenna; Is the J-Pole the ultimate 10 meter band vertical ... The Amazing Delta Loop Antenna. DX-Mass Tree Light Dipole; Top 10 easy to build HF wire antennas; How to design and build a 70cm DIY loop antenna; Loop on the ground antenna, is it any good?Built a Yagi 2m 70cm Tape Measure Antenna for amateur radio satellites but this video shows me having a QSO of a repeater about 20-30 miles away. Inspiration...The more common coax collinear requires a PVC radome to give it rigidity and weather proofing, and assembly can be difficult. The 2 - 440 Collinear vertical in this project is simple to build and expand, semi rigid, self supporting, water tight, electrically sound, and a professional appearance when completed.Based on HB9CV, F6ITV decribes how build a swiss quand antenna for 28 and 50 Mhz. Quad vs. Yagi Why go for a quad rather than a yagi 2-Element-DK7ZB-Quad for 5 Bands 10-12-15-17-20m A description was in the German Ham-Magazine "Funkamateur" in Issue 11/2003 2 meter cubical quad antenna W7SIR cubical quad antenna for 146 mhz EI7BA's Amateur ...Now its time to add the additional elements to the top and bottom of the collinear array. First add a 1⁄4 wave element to the top of the antenna as shown in Figure 3. Use #16 solid wire or similar and solder it to the center conductor only. The length of the 1⁄4 wave element is calculated as follows: 1/4 wavelength radiator = 300 / F / 4.=====More information on my website at http://www.fuzzthepiguy.tech=====Here are the measurem...Either get/build an antenna for each band or find a design that is resonant on multiple bands. Those are common for VHF+UHF, not sure if GMRS+VHF+UHF is generally available. I've got the Comet GP-6NC for GMRS. It's a really great antenna. I also have the ham version Diamond X-300 for 2m/70cm. While either antenna will work for the other ...I had the opportunity to find some old Camping stools from SAVERS, a local thrift store, so I destroyed them and made a Moxon antenna!I have heard the storie...Two Connector (11) 2m 70cm Dual-band antennas. Common connector for both bands or with separate connectors for 2m and 70cm. Excellent gain on both bands and wideband operation.3 Reviews. US$92.13. Quantity. Add to Cart. About Diamond X-200 2m/70cm Dualband Base Antenna. 2m/70cm Dual band Base Antenna. Diamond Original base antenna-Japan double band. Key Features. Fiberglass construction.An Improved Version. (See older version here) 3 element = 7 dBd Gain. 5 element = 9.4 dBd Gain. 10 element = 13 dBd gain. These Collinear antennas are " 4 " Megs wide and "must be supported" at the top by a yard arm or tree limb. Building instructions for the NEW WB3AYW Collinear Antenna. This is for Two Meters only 02/11/2014.We built a 2m dipole antenna out of a broom handle, pvc and some other small pieces that we had laying around the house. Ham radio is such a wonderful hobby .... Slim Jim Antenna Project – VU2RMU. 2 Meter SlReview Summary For : Diamond NR72BNMO 2 meter and 70 cm mobile antenna Raise your hand if you thought pointing both of a router's antennas straight up was better for Wi-Fi reception. Yeah, us too. According to a former Apple Wi-Fi engineer, however, t...Includes Ground Plane Radials. The Laird MBCN is a Mobile to Base Station Antenna adapter for use with VHF and UHF antennas. The kit includes NMO to N-Female adapter and (4) 22 inch long ground plane radials. NOTE: Whip antenna, mounting pole and coaxial cable are NOT included. www.arcantenna.com. Details. The resource is currently on dxzone.com in just The yellow trace is the VSWR reading from the antenna analyzer. One pink asterisk is at 2M, and two pink asterisks is at 70cm ham bands. Zooming in on 2M shows a slightly better SWR than the full spectrum, at between 1.5 and 3 across the band. The VSWR of 70cm was below 2 across nearly the entire band. STEPS #22 to #25: COMPLETE THE ANTENNA. 22. Build your own 2m/70cm 3 Elements VHF by 5 Elements UHF ...
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