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.I need plans and specifications for this build with respect to the below frequencies. I'm not really interested in the 1/2" copper pipe build but would prefer solid round aluminum, copper stock or perhaps plated 5/8" grounding rod. Transmit Power 50W. * Receive (RX) Frequency Range: 136-174.995 MHz VHF.About Mobile Dual-Band 2m/440 -- Roger K6XQ advises-Can I build a 2m/440mhz 5/8 mobile antenna? A 1/4 wave on 144 MHz is 3/4 wave on 440. The SWR is usually acceptable on the 3rd harmonic, although that is partly due to the increased feeder losses on 440.Build a 2m VHF lightweight sleeve dipole antenna. A compact portable antenna and easy for deployment. You can even operate the dipole while holding it. Building it is easy just follow the antenna plans below. The antenna specifications are below including the testing video. Wiring the Feedpoint. Antenna Measurements.You could go higher with yours and get better performance. And if you want a better antenna, and you want to make it, you can't go wrong with a collinear. (Or even store-bought, your choice.) Build a tape measure beam! …

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...Mhz so it can generally covers the whole VHF amateur band. -Connect a SWR meter to the antenna and to the radio, making sure you attached it to the right connector posts. -Take a SWR reading, and if it is beyond 1.5, cut the 19.5" VHF element rod 1/8" at a time until the readings is in between 1-1.5. -Theoretically , a reading of 1 is the best ...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. dummy. SMA-24 SMA24 SMA 24 SMA/24 SMA(24) Original Comet Dual-Band 2M / 70cm HT Antenna SMA-Male. dummy.

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Satellite Yagi 2m 70cm Tape Measure Antenna - Hombrew DIY Cheap - KM6JUR. 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 for design was a blendDual 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 achieve a ...5 Element 2M / 70cm Yagi. On this page is the design for Dual Band 2M / 70cm antenna with 3.2mm elements. The antenna has a 50 ohm designed driver. This Yagi has a unique element called a Open Sleeve.There are exactly two ways to pick up digital channels on your television set: You can use a digital antenna, available at most major electronics retailers, or you can sign up for ...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.

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The first reference that caught my eye was the $4 Ham Radio Satellite Antenna. I saw this web page a couple months ago, and was thinking about building it, but haven’t gotten around to it yet. It looks like a very cool and easy project. One thing I was wondering about is why the 2m and 70 cm elements aren’t perpendicular to one another …

309,00 €. Add to basket. SKU: 1370. Reviews (0) 2m-70cm The Best Dual Band Antenna 2m70DX37-2Conn with two separate connectors. Two separate antennas on the same boom. Behaves as two extreme gain monoband antennas. 1500W on 2 meters and 850W on 70cm. 12 elements on 144 MHz and 25 elements on 432 MHz. 2 meter and 70 cm Longest Dual Band Yagi ...Note: Just to be clear, most of the images show for the 2-meter band. In this case there is seven 1/2 half wave elements, plus 1/4 wave ones on the top and bottom. For other bands (i.e. 1 1/4 meters) there will be a few more 1/2 wave elements in the middle. ... Take apart the old guts of the commercial antenna you got and put the new antenna ...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.The resource is currently on dxzone.com in just one category. Main category is 2M that is about Antenna projects for 144 MHz. This link has been on our site since Saturday Feb 22 2020, and it has been clicked on 387 times. So far it received 1 votes for a total score of 5.00/10. The scale is 1 - 10, with 1 being poor and 10 being excellent.Jul 30, 2023 · HAM RADIO: Easy SlimJim / J-Pole Dual band Antenna Build for 2m/70cm . Thanks to Mike (M0MSN) for this "Slim Jim"/"J-Pole" antenna idea. This 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" antenna is suitable for both home and field use.Jul 30, 2023 · HAM RADIO: Easy SlimJim / J-Pole Dual band Antenna Build for 2m/70cm . Thanks to Mike (M0MSN) for this "Slim Jim"/"J-Pole" antenna idea. This 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" antenna is suitable for both home and field use.Some simple portable antennas for 10 & 6 metres. Super simple 2m & 70cm antennas for FM, SSB & digital modes. Build a hanging dipole for 2 metres. 4 element portable yagi for 2 metres. Importance of inspecting and maintaining antennas used in the salty air (video) 3. Pedestrian mobile and ultra-small antennas

#baofeng #pmr #radioprepersWitam!W filmie prezentuję spontaniczne wykonanie super prostej anteny na pasma które. Możemy znaleźć w najbardziej popularnych rad...Not so long ago I built my version of The Home-Brew SKYLAB Starduster for 26 - 30MHz, Super simple to build with just 10 metres of wire and a length of coax....This is post 2311 in a continuing series of simple ham radio antennas. Thanks to "Prepping Ohio" for this tutorial on how to build a simple 3-element 2 meter beam antenna. The antenna is vertically polarized, allowing for distant repeat contacts. Most of the materials are available at the nearest hardware store or building supply outlet.In this video I give an overview of the design and use cases for 2 distinct eggbeater antennas, a DIY eggbeater V2 antenna and a commercially produced eggbea...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...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.

On most of the J Pole designs out there, a choke should be used as close to the feedpoint of the antenna as possible to help prevent rf on the feedline and creating difficulty with SWR readings. For 2 meters, the coil is 4 turns of coax at 5 inches in diameter. You should get good results with the choke within 3 or 4 inches of the feedpoint on ...

I used 1″ thin-wall PVC pipe, aluminum tape, and RG-8X coax. The goal here is to put up a cheap, easy, and quick 2-meter antenna that is simple and unobtrusive, but works quite well. If you have the materials handy, you can build and install this antenna in a couple hours. This dipole was constructed as follows: Cut 6 or 7 feet of 1″ thin ...The Diamond X-200N 2m/70cm Fixed Station Vertical antenna is constructed from fibreglass, ensuring durability and longevity. This model comes pre-tuned and fully weatherproofed, making it suitable for various environmental conditions. Installation is made easy and efficient with a coax connection via an 'N' socket, which includes mast mounting brackets.Operating on frequency bands 2m/70cm, the ...Many antenna manufactures have their own version of a 2m/70cm antenna that is 1/2 wavelength on 2m, and they all are similar in height, have some type of coil in the middle and a coil at the base. The tram/browning 1180 is inexpensive, but IMHO effective copy. Regards, JB.The SWR on 2m is 1.6 @ 144mhz and 2.2 @ 148 mhz following your measurements. Although I can not get anything out of the 70cm side. There is a repeater I can open with a HT with a rubber ducky antenna standing at the antenna location but it will not open it up through the antenna.. I do not have the equipment to check the SWR @ 70cm though.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.In the video I incorrectly state 440cm, this is intended to mean 440 band or 70cm!In this video we will make a yagi for 2 meter and 70 cm ham bandsLink to In...So I built a simple flower pot antenna from PVC pipe and coax. My First Antenna - A Dual Band (2m / 70cm) Flower Pot Antenna. I've bought a few whips for my HTs and thought it was about time I made an antenna of my own. Obviously, the place to start was a dual band UHF / VHF antenna. Design. I picked the flower pot antenna based off the designs ...

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HYS 771Q 2m/70cm SMA-M Tactical Antenna Dual Band Foldable Portable Aerial Compatible with BF-UV3R YAESU VX-1R VX-2R VX-3R TYT 2 Way Radio (Camouflage) 1. £899. FREE delivery Mon, 29 Apr on your first eligible order to UK or Ireland. Or fastest delivery Tomorrow, 27 Apr.16 Jun 2021 ... 70cm/2m antenna build, method of how I built it and tested it. #hamradio #satellite #FM #moxon #yagi #SO-50 #ham #2meter #70cm.Section 1: antenna tutorial How to build a turnstile antenna for a 70 cm band (~435 Mhz)? Materials: pipe for the body - I used casual hydraulic PCV from the construction shop; holders for the rods - for me, the 3D print from ABS was the most convenient (if you want to reuse the project, you can find it on GitHub)UAYESOK Dual Band Magnetic Mount Mobile Antenna 2m/70cm VHF UHF Heavy Duty Mag Base Antenna PL-259 Plug for Vehicel Truck SUV Mobile Radio Transceiver HT Scanner. 4.5 out of 5 stars. 11. $29.99 $ 29. 99. ... Protect & Build Your Brand; Become an Affiliate; Become a Delivery Driver;The Satellite feature allows split channel and (2m&70cm), so I wanted a solution to use the 9700 at the QTH. I didnt want to spend a fortune on antennas, so I hunted out a reasoniibly priced 2m and 70cm antenna. For today will talk about the 70c antenna, the DUAL PA432-8-1.2RA. I got mine from Nevada Radio, other places sell them, but I've ...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. F4HWKHere are some comments from "electronics unmessed": This video is about building a loop antenna for the 70 centimeters amateur radio band. What I particularly like about this antenna is that it implements a bandpass and a powerful antenna at the same time. The principle of this antenna is actually very simple: A ring with the circumference of ...2m/70cm dual band antenna build. This Antenna is based on VK2ZIO's Flower Pot Antenna. Main Parts. - Antenna is a vertical collinear design. Made up from two half wave sections separated by a coaxial phasing coil. The bottom half of the bottom section radiates from the coaxial cable braid so a choke balun is required to stop currents flowing ...

The product I chose to construct the j-pole antenna was 3/4 inch copper pipe used for plumbing. Here are the plans to develop a 2 meter J-pole antenna: The above measurements for the J-pole remain in inches. Measurements on overall length, as well as stub length are from the centerline of the splitting up pipe (horizontal) to the top of the ...4 Nov 2021 ... The FBK2 / 70 is in its basic form a 2-meter half-wave antenna, and will behave like that, in the middle of the 2m band (145MHz). The half wave ...24 Apr 2020 ... 2.6K members. Join. Antenna Building Novice & Expert. 29K members. Join. FT-991A. 3.1K members. Join. Ham Radio Swap - Online Hamfest. 16K ... llamas cousin crossword clue Simon Küppers designed an antenna by using a "standard" dual-band Dipole design (using sleeving bars). The antenna acts as a dipole at 2m, and as a dual-ended half wave at 70cm giving about 3dB of gain. Dipole wires are just 2mm diameter spring steel held in place using 3D prints. I feed the dipole from a single-ended coax using a marchand ...W7LPN 2m/440 vertical dipole. The project below is my own design for a dualband vertical dipole for 2 meters and 440. It requires a balun and works very well. I like to tinker, so when I finish one project, I go on to another, even if it works well. There are several methods of constructing a vertical dualband dipole and a simple method is ... singleton funeral home in cedar bluff Cut the tape at 35 1/8". This will be the director of the antenna and will attach to the front of the antenna. Cut two 17 3/4" long pieces of the tape. These will serve as the driven elements. Cut an additional element from the tape. This will need to be 41 3/8". This is the reflector element. orange colored fruit pastry nyt crossword clue 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. chilis doordash promo code The GMRS uses approx. 460-470Mhz range of the 70cm, so I assume that a dedicated GMRS antenna would be better. For Ham, I would be using my HT, so I would want a 2m/70cm dual band. There are so many antennas, I am hoping that a fellow RV /ham user has already found the antenna that would work for me. medfusion usmd Don Murray W9VE Building a Dual-Band Antenna Mentorfest 10/23/04 1 How to Build a Dual-Band Antenna for 2M/70cm. Don Murray W9VE Building a Dual-Band Antenna Mentorfest 10/23/04 ... 10. Finally, adjust position of bracket on conduit for best 2M SWR. 11. Tighten and check all hardware 12. Weatherproof entire area above and between conduit and judy woodruff interview michael luttig A 1m length of 19mm x 9mm cross-section wood. 12 aluminium welding rods, approx. 3.2mm diameter and 50cm long. A A 90-degree corner brace. Wood screws and two 6 x 50mm bolts with washers and nuts. Cut a 40cm piece from the 21mm x 21mm cross-section wood. Drill five 3.5mm holes in this piece, 8cm apart (from centre to centre), starting 1cm from ... warrant check memphis tn If you build the antenna as shown, the computer model predicts 11 dBi gain and a front-to-back ratio of 20 dB. ARRL Lab measurements confirmed the computer-predicted antenna pattern. You may wish to read further about tuning adjustments in The ARRL Handbook. It describes how to check the antenna with a field-strength meter, or by using24 Oct 2019 ... Slim Jim and J pole both DIY builds and give quite different results. X30, X50 are very generic and forgiving, X200 X300 etc are longer and have ... 380 fahrenheit to celsius oven N6TWW. 2 Meter Halo Antenna project by Mike Fedler with many detailed pictues and detailes homebrewing instructions so you can build your own. This is a series of videos showing how to build an Omni directional horizontally polarized antenna for 2 meter single side band operation. This antenna is called a 'Halo Antenna' due to its circular shape.Age : 71. Subject: Homebrew 2m/70cm Dipole Antenna Sun Mar 19, 2023 9:35 pm. Following on from my PMR446 Antenna I decided to try my hand at constructing a 2m/70cm Vertical Dipole Antenna. 3mm stainless steel rod was used for the antenna arms and various other bits and pieces I had laying around in my shed were used to complete … quest diagnostics brooklyn bayridge Here is a simple 2-element quad for 2m that is easy to build and does a good job. It works well for extending the range of an HT, transmitter hunting, SSB, or general use. When not in use it comes apart for storage. The SWR is less than 1.5 : 1 across the band from 144 to 148 MHz without any tuning. The boom can be rotated for …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 ... korean supermarket sacramento 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. edgenuity bot chrome extension In this video I show how to make a 2 meter dipole Antenna for use with a HT for a SOTA activation. You don't even have to know how to solder!Check out the Ha...This 2 Meter 300 Ohm Slim Jim antenna is constructed from regular 300 ohm twinlead. (The same type used for TV antenna installations.) It is very easy to build and does not take days to construct. The measurements above are not extremly critical but may have to be lengthened or shortened for your particular operating frequency.