2m 70cm antenna diy. The $4.00 Ham Radio Satellite Antenna by KGØZZ It's a dual band 2m/70 cm yagi antenna made with common materials and cost very little to make. Also, the antenna is fed with only one coaxial cable and does not use a duplexer. ... I used the formulas to build it for 6m. It also happens to work out really well for 2m & 70cm use as well. https ...

Re: Homebrew 2m, 70cm mobile antenna. by knight » 11 Feb 2010, 17:17. First the photo is a heldhold mobile radio and the antenna is for a mobile radio. I am trying to build a antenna for the roof of a car which I did say a mobile car antenna for the roof of a car not heldhold. knight.

Fig. 1: (Left) AN-SOF model of dual-band vertical dipole with segmentation density. (Right top) Radiation pattern at 145 MHz (2m band). (Right bottom) Radiation pattern at 433 MHz (70cm band). Model files courtesy of Keith Rawlings (G4MIU). As articulated in Keith's article, this antenna emerges as an optimal choice when confronted with ...This set me back about 50 euro cents per 2 meter (which means about 0.65 USD for 6.6 feet). I needed 50 cm of pipe in this antenna (2 times 25 cm). Next to this I used 70cm of speaker wire I had laying around and a few tie raps to strap it all together. I checked the SWR with the build in SWR meter of my FT-817. It was all 1:1.1 so perfect!

The Connect at measurement is 1 1/2 inches from the top of the horizontal member to the point of connection. The distance between the main element of the j-pole centerline and the tuning stub centerline is 0.75″. Pages: 1 2. Filed Under: antenna, Ham Radio, WB8ERJ Tagged With: 70cm, Antenna, DIY, Ham Radio, J-pole, jpole, wb8erj.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 ...Jun 29, 2018 · Dave shows how an old coffee can can be repurposed as a home made 2 meter/70 cm antenna. All you need is a vertical element cut to the correct length and some kind of metal ground plane or counterpoise to complete the antenna. The shield of your coaxial feed line might serve this purpose. A clearly explained, step-by-step procedure that will ...=====http://fuzzthepiguy.tech/yagi-2/=====#hamradioporn #antennas #cw #dx #pl #radioamadorism...Dualband Antenna’s. 2×4 2m/70cm Compact Satt Comm Antenna; 2×3 2m/70cm Cross Yagi – compact build; Build 3 x 5 2m/70cm Cross Yagi 145-435Mhz; Build the 3 x 5 Elements 2m/70cm Yagi; VHF antenna’s. 2 Elements Yagi 144Mhz; 7 Elements Yagi for 146Mhz band build; 2 Elements Yagi build for 107Mhz FM Band; …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 ...This video shows my dual band antenna that I made for use on the 70 centimeter band (432 MHz) and the 2 meter band (144 MHz). It is horizontally polarized an...2 meter antenna tuner project. October 05, 2022. 2 METER ANTENNA TUNER , ONE EVENING 2 METER TUNER PROJECT, Most active radio amateurs have an antenna transmatch (i.e. "tuner") to reduce swr and provide an impedance match to their transceivers.This is post 2241 in a continuing series of simple ham radio antennas. Thanks to Paul Foulkie for this great antenna idea. This portable 2m/70cm antenna is suitable for both portable and home operation. You should be able to find most of the materials at the nearest building supply center or neighborhood hardware store.

Step 4: Measurements. The developed antenna has been measured with a VNA in terms of SWR and S11 parameters. The result shows that antenna has a bandwidth between 419.5 and 451.2 MHz with the respect of SWR of 2:1, which is more than enough for the 70 cm band (430-440 MHz). F4HWK.It's a multi-band 80-6 meter wire dipole. ZS6BKW started with the G5RV and then conducted extensive computer modeling to increase the gain, flatten the SWR a bit, and smooth out the lobes. It's also about 10 feet shorter than an equivalent G5RV. The antenna must be fed with 39 feet of 450 ohm ladder line and also must have at least 70 feet of ...A Simple 2m/70cm Vertical Dipole Antenna I have to seal the coax ends before it goes outside. I used all brass to build mine instead of stainless for the elements. ... I am also going to build another one to mount on the overhang on the front of the house so I can use my HT in the living room. My shack is in the opposite corner of the basement ...The basic "J" is reported to have >3dB of gain over a ¼ λ ground plane antenna and 6dB over an isotropic (theoretical) antenna. The "J" can be made from almost any material: copper pipe, steel whips, TV twin-lead, ladder-line or metal rods. Technically, the "J" antenna is an end-fed ½ λ antenna that uses a ¼ λ matching stub. Old-timers

2 meter 70 CM or 440 Mhz antenna building parts I found were cheap and the antenna did pretty good! I love the SWR. The SWR was Low. The 2 meter antenna...

Find VHF/UHF Base Vertical Antennas 2 meters Band Coverage and get Free Shipping on Most Orders Over $99 at DX Engineering! Amp up Your Operation with the DX Engineering Super Card – Apply Now! ... Antenna, Vertical, Dual-Band, Base, Fiberglass, 2m, 70cm, 200 W, UHF Female/SO-239, 8.3 ft Height, Each. Part Number: DMN-X200A. 4.95 out of …

Transceivers offering SSB mode on VHF/UHF bands include the Kenwood TS2000, Yaesu FT-897D, and Icom IC-9100, as well as many others. Equipment The required equipment for getting started on 2M SSB is pretty basic - a transceiver capable of 2M SSB and a 2M antenna. The 2M antenna you already have is probably vertically polarized since that is ...I am trying to make my own arrow antenna (the split boom 2m/70cm combined model) but I hit a snag. The manufacturer provides quite detailed assembly instructions which even seem to contain all dimensions of all the element lengths and spacing. But those dimensions seem to be inaccurate, as they don't match photographs of the antenna found on ...I was surprised to discover the 70cm band workable, while this makes sense since 70cm is the 3rd harmonic of the 2m band, the simulation did not hold promise. But sometimes you get lucky if you try. You too can build this 3-element Yagi antenna without fancy test equipment by using accurate dimensional measurements and good construction technique.Shop for 2 Meter Antennas here. 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. 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 ...DIY Antenna question (2m 70cm) Jump to Latest Follow 3K views 9 replies 7 participants last post by firewallsrus Feb 12, 2018. CPLSeraphim Discussion starter 670 posts · Joined 2015 Add to quote; Only show this user #1 · Feb 5, 2018. I have a question I have been wondering about for making an HT antenna. ...

2 Meter & 70cm UHF VHF Dual Band 144/430MHz NMO Mount Antenna with 16.5 FT UHF PL259 Male Plug Kit for Trunk Vehicle Car Mobile Radio Transceiver Two Way Radio, Eifagur ... with good signal reports. They also appreciate the solid build and performance. Some say it'll work well for 2m and 70cm bands, and is small and efficient. Overall, most are ...The $4.00 Ham Radio Satellite Antenna by KGØZZ It's a dual band 2m/70 cm yagi antenna made with common materials and cost very little to make. Also, the antenna is fed with only one coaxial cable and does not use a duplexer. ... I used the formulas to build it for 6m. It also happens to work out really well for 2m & 70cm use as well. https ...DualBand 2M/440MHz mobile antenna. This is the most popular antenna in the Comet line for several reasons: Mid-size / mid-price range / open coil flexs to absorb brushes with tree branches / black color fades into the skyline - ground independent. Gain & Wavelength: 2M: 3.0dBi 1/2 wave. 70cm: 5.5dBi 5/8 wave x 2.permits the antenna to achieve high performance, high power rat-ing low vswr, and broader band coverage on both 2m and 70cm bands. 2. Direct element joint structure with two interconnected FRP outer-shells. Enables the antenna to maintain the same strength as one with one piece structure. The ring gasket makes the antenna water-proof, and ...This time I found an old fence wire, a piece of wood, and decided to make a yagi antenna. I already made an antenna like this a few years ago. Very simple. T...Business education is, let’s face it, finding it hard to keep up with a $3 trillion global tech startup economy that’s booming right now. High-growth companies are time-starved and...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...2m-70cm antennas - map of st.lucia - about me - contact me . 2m-70cm antennas. 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. this is the best dual band j-pole ever builtAug 13, 2021 · HAM RADIO: Easy SlimJim / J-Pole Dual band Antenna Build for 2m/70cm, Thanks to a book I purchased many moons ago, I have found the perfect way to pass a ra...A DIY lightweight 2m Moxon antenna. Here is a rough guide to my home brew 2m Moxon (According to some old kitchen scales it weighed in at around 160g, my luggage 'scales' said .2kg, but it only shows up .1kg units ) I built it to take to ZL and VK, so the dimensions were for frequencies a little higher than the UK, although it seems to work ...Shop dual-band, monoband, and tri-band VHF/UHF vertical antennas at DX Engineering. We offer the top names in Ham Radio antennas, including Comet Antennas, Diamond Antenna, Larsen Antennas, MFJ, and Hustler Antenna. Our selection of antennas handles from 10 watts to 350 watts of power and covers a wide range of frequencies.My SWR reading was 1.2 on ch 1,1.1 on ch 20, and 1.2 on ch 40. But when I raised it up to full height the readings went up to 1.4 on ch 1, 1.3 on ch 20 and 1.4 on ch 40. I believe that its because is mounted too close close to my open stub J-pole antenna for 2m/70cm. But they are readings I can live with.The antenna length formulas used in our dipole length calculator are as follows: L = 468 / f. l = L / 2. where: L — the length of the total dipole antenna in feet (ft); l — the length of the arm of the dipole antenna in feet (ft); and. f — the desired frequency. We also used the simple wavelength formula: Wavelength = c / f.The resource is currently on dxzone.com in 2 categories. Main category is 6M that is about 50MHz antennas plans, homemade antennas for the six meters. This link has been on our site since Friday Nov 21 2008, and it has been clicked on 5477 times. So far it received 12 votes for a total score of 4.66/10. The scale is 1 - 10, with 1 being poor ...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 as ...40m/20m/15m/10m/6m. Trapped Dipole. 150W/200W SSB. 13.1'. 4.3. Diamond ® Antennas are sold through authorized dealers. Contact one of your local Diamond ® Dealers for current price & availability.Oct 31, 2015. #2. 2 meter antenna. If you want a 2 meter buy or make one. Cut five 19 inch coat hangers, get a male pl 259 and make a ground plane.. One in the top and 4 radials in the other holes at 45 degrees.Hi there, here's a brief overview of my 70 cm colinear antenna, constructed for me by a very nice chap: G1ZMA.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.

In this video I go through the steps to build a very simple, inexpensive multi band dipole antenna for the 40 and 20 meter amateur radio bands which can be used either at your home or in the field for off-grid emergency communications. Additionally, this DIY wire dipole antenna will also work on the 15, 12, 10 and 6 meter bands if your radio ...I tested my antenna on the local N4NRV input frequencies for our two repeaters. With a 50 foot length of RG8, and the antenna 20 feet in the air, SWR was a respectable 1.13:1 for the 147.780 MHz input frequency, and 1.01:1 for the 449.650 MHz input frequency. I was so pleased with my results that I purchased enough materials to construct ...7 Nov 2019 ... First up is this dual-band (2m, 70cm) "Arrow" style "satellite" antenna. While it's meant for using for AmSat contacts, it can be modified fo...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.Review Summary For : Diamond MR77 2m/70cm Mag Mount Ant. Reviews: 30. MSRP: 39.95. Description: 2m/70cm Antanna with Magnetic Base. 19.5 Inches (0.5m) high, 13 Feet RG58C/U and terminates to a PL-259 plug. 2m = 1/4 Wave, 70cm = 1/2 wave. Max Power = 70 Watts. The Diamond MR77SMA is the identical, but terminates to an SMA plug.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 ...Mike calls this antenna the "perfect stealth antenna" for 2m/70cm. Mike does an excellent job of taking us through the design, construction, and testing process for this remarkably simple antenna. ... In this video, members of the Stamford Amateur Radio Association W1EE, show us how to build a ZS6BKW antenna capable of covering the 80 to 6 ...

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...I show how to use stainless steel TIG welding rods (can be done with other materials as well) to make antenna elements for home built 2m / 70cm antennae such...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. [e.g. 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 ...An antenna for frequency F will also be resonant near F*3, so you may not even need 70cm elements. The different length conductors show different impedances at different frequencies; at a given source voltage you can drive the most current into a conductor when the impedance (AC resistance) is low. The lowest impedance is offered by 1/4 wavI 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/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 …24 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 ...How To Build A DIY 2M Roll-Up Slim Jim Antenna (Including How To Crimp A PL-259 UHF Connector Onto RG8X Coaxial Cable): Step-By-Step Instructions. March 1, 2022 by …Just got my General license to operate on the entire 10 meter band, so I went for a four band antenna such as this and gave it a shot. it's useable on 70cm except near the end of the band, useable on the entire 2m band, but it's not very efficient, useable towards the CW portion as a terrible 6m antenna, and a very narrow bandwidth on 10m ...In this video, Dave shows us a simple step-by-step procedure to make a dual-band 2 meter and 70 centimeter ground plane antenna. This antenna will let you connect with both 2 meter and 70 cm repeaters in your area. The antenna is fairly easy to make with locally available materials. This homebrew dual-band antenna is suitable for both home and ...Not flat but not hilly either. Tall pines sourding three sides but are 200 ft away. The repeater I connect to is 160 feet above my antenna, 20 miles away.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.The Slim Jim antenna is a flexible antenna made from ladder line. The two ends are soldered together to make a loop and a small gap cut out of one side of the ladder line, the Coax feeder is then soldered to the ladder line to make a flexible antenna. Designed normally for 70CM (UHF - 440Mhz) and 2M (VHF - 145Mhz), these cheap, easy to make ...30 Aug 2016 ... The antennas that Kevin AG6YO describes are single-band antennas. If there aren't many 70cm repeaters in your area, then a single-band 2m ...Apr 1, 2024 · April 01, 2024. HAM RADIO: The Coat hanger Antenna 2m/70cm dipole. If you have some unused metal coat hangers in your closet, you can convert some of them into simple, efficient antennas for the 2m/70cm amateur radio bands. In this video, Tim (M0MSN) combines two metal coat hangers and a few spare parts from his ham shack to create a remarkably ...April 01, 2024. HAM RADIO: The Coat hanger Antenna 2m/70cm dipole. If you have some unused metal coat hangers in your closet, you can convert some of them into simple, efficient antennas for the 2m/70cm amateur radio bands. In this video, Tim (M0MSN) combines two metal coat hangers and a few spare parts from his ham shack to create a remarkably ...The Diamond 2m 70cm vertical antennas are a type of antenna designed for use in the 2 meter and 70 centimeter frequency bands. These antennas are vertically polarized and are commonly used by amateur radio operators for communication on VHF and UHF frequencies. They are known for their compact size and ease of installation, making them a popular choice among radio enthusiasts. The Diamond 2m ...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...

The 70 cm phasing line is (13.5 cm) long and the 2 meter phasing line is (41.5 cm) long. Cut the RG-62 about (5 cm) longer than these measurements and leave (2.5 cm) at each end to strip the insulation, peel back the braid, strip the center conductor, and attached the ring lugs.

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 ...

Begin by placing the Reflector elements one inch from the end of the extrusion. Asseble the antenna to the dimensions you chose building off of the first reflector. For the 2 meter side leave 1 inch between the driven elements. For the 70cm side leave 1/4 in between the driven elements.7. rjm27trekkie. • 4 yr. ago. You may notice that you have a 78:1 ratio for wavelength to tape thickness on 2M and only a 28:1 ratio for 70 cm using these inch thick tape measures. I have had much better results (without having to make corrections) using a 1/2 inch tape measure for the 440 side.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" …Sep 24, 2020 · This time I found an old fence wire, a piece of wood, and decided to make a yagi antenna. I already made an antenna like this a few years ago. Very simple. T...permits the antenna to achieve high performance, high power rat-ing low vswr, and broader band coverage on both 2m and 70cm bands. 2. Direct element joint structure with two interconnected FRP outer-shells. Enables the antenna to maintain the same strength as one with one piece structure. The ring gasket makes the antenna water-proof, and ...The principal concern with feed lines is loss, and every feed line has it to some degree. That is, if you insert 50 Watts into a feed line at your station, you'll have less than 50 Watts once your signal gets to your antenna. The rest of the power is lost somewhere in the feed line, usually in the form of heat.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 .Review Summary For : Diamond NR72BNMO 2 meter and 70 cm mobile antenna. Reviews: 22. MSRP: 41.95. Description: It is a 1/4 wave on 2 meters providing 2.15 dBi gain and a 1/2 wave on 440 providing 2.15 dB gain. This antenna can handle up to 100 watts. VSWR is less than 1.5:1. Product is in production.

sam hyde girlfriend2011 honda odyssey sliding door cabletyler1 emoteswho is the lady in the lenscrafters commercial 2m 70cm antenna diy iready diagnostic scores 2023 florida [email protected] & Mobile Support 1-888-750-6630 Domestic Sales 1-800-221-4480 International Sales 1-800-241-2720 Packages 1-800-800-8515 Representatives 1-800-323-2954 Assistance 1-404-209-8601. A simple ham radio 2 meter and 70 cm antenna for fixed or portable use. For details: http://www.amateurradio.bz/2m-70cm_vertical_dipole_antenna.html. section 430 citizens bank park Your First HF Antenna-how to work out what you can... Antenna Book Face-Off: Rothammel vs ARRL-which re... Portable With Hamsticks; 15m Moxon Ham Radio Antenna you can build from ten... Build Simple Effective Common Mode Choke For Anten... DIY 2m 70cm Rollable J Pole Antenna; Yet Another 10 Meter Moxon; A Thirty-Foot …In order to connect a 2m/70cm radio and a 1.25m radio to a triband. antenna (2m/1.25m/70cm), one requires a triplexer and diplexer. I'd. like to cut down on the number and size of equipment to do this. I asked Comet about making a single compact unit that takes 2m/70cm on. one port and 1.25m on the other. servsafe 90 question testwas king von a crip However, if the only repeater you intend to use from your home is a 2m machine, and you have no interest in other VHF/UHF band operations, then a single band VHF antenna may be your choice. (Ditto for only 1.25-m, 70-cm, or 6-m band ops). Consider the local radio resources available to you and how you wish to use them, and then decide what band ... merced inquirybaddies west slim New Customers Can Take an Extra 30% off. There are a wide variety of options. Adjust the tuning screw for maximum reading on the 415 meter. Remove the cavity and connect point X to Y. Set the signal generator to the repeater output frequency and adjust the 415 for a 0 reading on the 20 dB scale. Reinsert the cavity between X and Y and adjust the cavity tuning for minimum reading on the 415.I'm confident you will find this portable "J" to far exceed any other antenna, in the same setup, to more than tripling your 2m & 70cm (440MHz) performance! Here is a step-by-step to make a portable (or base) 3/4 inch copper-pipe "J" that breaks down into four (~24" long) pieces for easy transporting. This design uses a Bungie-cord to keep all ...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.