2m 70cm antenna diy. (The 70cm gamma appears to be set pretty much square on out of the box.) I was able to get 2m SWR down to 1.2 @ ~50Ω Z. SWR/Z at 70cm was about 1.5/~52Ω. Once you get the physical dimensions of the 2m element balanced and the gamma slider adjusted to the band space you want, this antenna will serve very nicely for general 2m and 70cm SSB ...

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 …

2m 70cm antenna diy. A collection of 9 easy to build J Pole antenna projects for VHF UHF and also HF News. Top Amateur Radio Websites - Issue 2420. Top Amateur Radio Websites - Issue 2419 ... A J-Pole for 2-meters and 70-cm. KD6GLF. ... Build a 2 Meter 5/4 Wave Antenna. N1HFX. This antenna is unique in that it is enclosed entirely in 3/4" PVC .

This is post 2397 in a continuing series of simple ham radio antennas. Thanks to Dave Tadlock (KG0ZZ) for this simple 2m/70cm vertical dipole antenna project. This antenna is perfect for deed - restricted housing and field operations. Also, Dave provides a link for more details on the antenna:

So baut ihr Euch zB. mit Schweißdraht und einem PL-Stecker eine hocheffektive Viertelwelle in 10 Minuten. Die Antenne ist sehr simpel und zugleich sehr verlu...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 ...

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 ...AMSAT SA have made available a new dual-band 145/435 MHz Yagi antenna for amateur satellite operation. The Yagi has a unique element called an 'Open Sleeve' which is a director very close to the driven element. The driven element is sized for 2 metres. When operating on 70 cm the 'Open Sleeve' acts as part of the driven element on 70 cm ...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.How to build a 2 meter yagi antenna with a gamma match. Simple and easy to make using parts from an old TV antenna. You'll love this small high gain 4 element yagi beam antenna. ... 6m/2m/70cm Yagi Antenna Built from Old TV Antenna by KGØZZ This turned out to be a great little antenna. It works the 6 meter, 2 meter and 70 centimeter bands. You ...Dual Band Half-Wave Flower Pot Antenna. ... Dimensions shown are for the (basic) 2m half-wave Flower Pot. The modification involves placing a co-ax phasing sleeve around the outside of conduit, positioned as shown. ... Then check VSWR across the 70cm (430 - 450 MHz) band. Expected VSWR readings will be less than 1.2:1 at band edges and less ...Member. I'm looking for a suitable antenna for my Jeep, which I use almost exclusively off road. The need is a no ground plane dual band antenna that's capable of transmitting across all 2M, 70cm, and GMRS frequencies. I'll spend most of the time on the 70cm and GMRS frequencies, so 440-470 MHz. Ideally, I'd like an antenna no longer than 36 ...(The 70cm gamma appears to be set pretty much square on out of the box.) I was able to get 2m SWR down to 1.2 @ ~50Ω Z. SWR/Z at 70cm was about 1.5/~52Ω. Once you get the physical dimensions of the 2m element balanced and the gamma slider adjusted to the band space you want, this antenna will serve very nicely for general 2m and 70cm SSB ...Video on repurposing surplus 800mhz 5/8 wave antennas to VHF and UHF. These antennas have little resale value and as such are ready candidates for experiment...Homemade 2M/440 J-Pole Antenna. A 2m 70cm Dual Band J-Pole antenna for 35 USD. An excellent performing J-Pole type antenna, constructed from readily available materials. Category : Antennas/J-Pole.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.

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.The antenna is dual banded to operate on 70cm using the same sleeve technique as used on the dual-band basic Flower Pot. This results in the antenna operating with four half-waves in phase on 70cm and provides a theoretical antenna gain of 6dBd on 70. Dimensions shown are for a 1st build prototype from a concept drawing and have yet to …Easy 2 meter SSB Loop Antenna. Here is a great design and build instructions for a nice 2 meter SSB loop antenna. 2 Meter Halo Antenna by Mike Fedler N6TWW has the detailed instructions on his site. Here are some initial notes from the link... There are two previous versions of my loop antenna that were built before the antenna you see now.Apr 2, 2020 · I’ve always wanted to have a go at working the satellites but never wanted to pay out on a dual band antenna. I already have a cheap uv5r radio that’s I’ve s...

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.

Wireman-J-Poles for 2m-40m J-Poles with Wireman-cables for the quarterwave matching section, working on VHF and HF bands. 440 Mhz J-Pole Antenna plans Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. Author use 1/2 inch copper pipe, and the associated fittings necessary.

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 ...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 ...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.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 ...

Feb 27, 2015 · Here’s a small 2m / 70cm diplexer that is good for up to 10W of power, perfect for working satellites with a HT. The design comes from KI0AG and was originally published in the November-December 1997 AMSAT Journal. It consists of two Chebyshev low-pass / high-pass filters designed for the 2m and 70cm Amateur Radio bands.Welcome to an exciting new chapter in amateur radio technology! I'm thrilled to introduce the 'Fara-J' – a cutting-edge 2m-70cm ham radio antenna crafted from Faraday cloth.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.7 Jul 2020 ... HAM Radio, Antenna, the Flower Pot Antenna, a Stealth Antenna that you can hide in a plant pot and cover with plastic flowers and leaves, ...It is estimated that the Slim Jim appears to have about 6dB gain over a 5/8 wave antenna due to the extreme low angle of radiation. (Most of the radiation is directed toward the horizion making the "gain" appear much greater than other vertical type antennas it has been compared to with A/B testing) Editor's note: There are many gain figures ...This means I have 3 models of antenna available, so have added a dedicated web page for each antenna. If you require a pair for 2m and 70cm bands, these can be shipped together in the same box. If you need a coax feeder for your antenna, I can offer various options from stock. Full details are provided on this page.The resonant frequency can easily be tuned by cutting the monopole, while the impedance can be tuned by folding the radials. * Monopole antennas need a ground plane, so you shouldn't use them with a u.fl to SMA cable assembly. Dipole antennas can be used with u.fl-SMA cables. * Monopole antennas can be used with edge soldered SMA-connectors.The antenna can be mounted by clamping the PL259 to a mast or even passing the coax through a 3/4 ID PVC pipe and compression clamping the PL259. Either way let your creativity work for you. If you plan on mounting it outside, apply RTV or sealant around the center pin and PL259, and tape well, to keep water out of the coax.Duoband-Dipol 2m/70cm: 2m/70cm 2+2/3 El. 2m/70cm 4+5 El. ... Small Duoband-Antenna for 2 m . and 70 cm by DK7ZB. Sometimes a small two-band directional antenna is the first choice for portable operation or for the balcony under restricted conditions. It is not always possible to accommodate a larger directional antenna.Dual band Yagi for 2m and 70cm with 4 elements on 2m and 5 elements on 70cm and one feed point, designed by DK7ZB. A great antenna for amateur radio satellit...In this quick video, Jim (AG6IT) shows us how to change a piece of unwanted gear into something useful. Here are some comments from Jim: a 40 inch slot cut in a parabolic dish, fed with a so239 jumper about 4.5 inches from the end of a slot, yields a stealthy antenna which can be used for 2m and 70cm. Vertically polarized and blends in nicely.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. F4HWKMounted to the horizontal cross piece with 2 U clamps, long legged muffler type clamps. Top of antenna is about one inch below the ridge beam. Bottom of antenna is approx 25 feet above ground level. Using 400 flex type cable (ABR brand from HRO). Just try to keep it away from any metal, vents wiring etc.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.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 ...Oct 23, 2020 · This is post 2397 in a continuing series of simple ham radio antennas. Thanks to Dave Tadlock (KG0ZZ) for this simple 2m/70cm vertical dipole antenna project. This antenna is perfect for deed - restricted housing and field operations. Also, Dave provides a link for more details on the antenna: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 ...

13 Oct 2012 ... I made another antenna; a 70cm Quad antenna, and it works like a charm! The “bad” thing about quads is that they are full wavelength ...Easy to build antenna for 2 meters. Follow along as i show you how to build a Quarter wave ground plane for 2 meters. From start to finish i walk you thrual...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.This is the insides of a common dual band antenna 2m/70cm, made by diamond or nagoya. its generally labelled as: 1/2 wave radialless (144MHz), 2 x 5/8 wave radialless (430MHz) Its meant to be ground independant. Im trying to find the design name for the tuning/matching circuit at the bottom and how it works.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...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...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; Build the 5 Elements 2m VHF Yagi

VHF/UHF VSWR Meter & appropriate ≥5 watt transceiver(s) or MFJ-269 2. discarded TV antenna to use radials/tubes for spreader supports 3. wooden dowel 5/16" for spreaders 4. AWG 14-18, solid copper wire 5. wood 1 1/2 X 1 1/2 in. boom or re-enforced 1" PVC with "T"' and end caps 6. non-metallic or re-enforced PVC for the mast 7.11 Mar 2017 ... Final part of version two of my dual band vertical dipole antenna. A third version, for permanent mounting, will be built soon in order to ...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.My first dipole antenna with cost breakdown. It comes out to about $40 if you have to buy everything, $12 if you already have some electronic / hobby-type ma...The antenna was placed in a vertical orientation just outside my second-story window on a 6-inch bulkhead connector . I used a 6-ft RG8X cable indoors as well as an adapter and a short length of RG-316 to reach the HT conveniently. It was easy to tune to the center of the 70-cm band using the supplied hex wrench and my antenna analyzer.Odds are there are dozens of HD channels broadcasting over the air in your area right now. If you’re looking to cut the cable cord and save some money, all you need to view them is...You can actually make a good 2m/70cm antenna that way by using a 2 m dipole and a close spaced 70 cm 1/2 wave element, or two 70 cm 1/2 wave elements one on each side of the 2 m dipole. The radiation pattern on 70 cm will be similar to 3 1/2 wave collinear array and will have around 3 dBd gain.Attic antenna for 70cm/2m. ANTENNA. I am planning on adding a simple J pole antenna (something like I found here) into my attic. Do I just mount it as high as I can into the peak, and run coax to where I'll attach it to my HT (antenna --> coax --> wall plate --> coax --> HT)? Am I missing anything, or any suggestions?Build 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...(The 70cm gamma appears to be set pretty much square on out of the box.) I was able to get 2m SWR down to 1.2 @ ~50Ω Z. SWR/Z at 70cm was about 1.5/~52Ω. Once you get the physical dimensions of the 2m element balanced and the gamma slider adjusted to the band space you want, this antenna will serve very nicely for general 2m and 70cm SSB ...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.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 ...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...Lower Silesian Voivodeship. Lower Silesian Voivodeship (pl: województwo dolnośląskie [vɔjɛˈvut͡stfɔ dɔlnɔˈɕlɔ̃skʲɛ]) is a voivodeship (administrative province) in southwestern-Poland, encompassing much the historic region of Lower Silesia, from whose Polish name ( Dolny Śląsk) its name is derived.Slim Jim Antenna Project – VU2RMU. 2 Meter Slim Jim Antenna using 300 Ohm Twinlead. Slim Jim 2M Antenna – SV5BYR. L.B. Cebik web site – requires registration (free) Commercial 2M 70cm Slim Jim – N9TAX. 2M Slim Jim antenna using Aluminum Tubing. Some Notes on the Slim Jim Antenna – M0UXB. Slim Jim Build. Handmade Slim Jim Antenna by .n9taxHere 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 …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 ...Depending on the 2 meter and 70cm frequencies you choose for tuning your antenna, you might have to compromise a little. I got lucky, because I was using 147.060 MHz and 442.100 MHz, which just happened to both yield a length of 19.08 inches for the longer of the two 3/8″ rod elements.

Easy 2 meter SSB Loop Antenna. Here is a great design and build instructions for a nice 2 meter SSB loop antenna. 2 Meter Halo Antenna by Mike Fedler N6TWW has the detailed instructions on his site. Here are some initial notes from the link... There are two previous versions of my loop antenna that were built before the antenna you see now.

The antenna is dual banded to operate on 70cm using the same sleeve technique as used on the dual-band basic Flower Pot. This results in the antenna operating with four half-waves in phase on 70cm and provides a theoretical antenna gain of 6dBd on 70. Dimensions shown are for a 1st build prototype from a concept drawing and have yet to …

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!How to build a 2 meter yagi antenna with a gamma match. Simple and easy to make using parts from an old TV antenna. You'll love this small high gain 4 element yagi beam antenna. ... 6m/2m/70cm Yagi Antenna Built from Old TV Antenna by KGØZZ This turned out to be a great little antenna. It works the 6 meter, 2 meter and 70 centimeter bands. …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 ...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 meter amateur radio bands. ... 2m/70cm Ground Plane Antenna; The NE0U 160m EZ-L Antenna at WX0V; Tri-Band Fan Vertical for 40-80-160m; Ham Radio EME with a portable small dish; Rotating Tower at Jim Heath ...Duoband-Dipol 2m/70cm: 2m/70cm 2+2/3 El. 2m/70cm 4+5 El. ... Small Duoband-Antenna for 2 m . and 70 cm by DK7ZB. Sometimes a small two-band directional antenna is the first choice for portable operation or for the balcony under restricted conditions. It is not always possible to accommodate a larger directional antenna.Dec 14, 2011 · 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.htmlHere's another fascinating and easy-to-build antenna idea from Dave Tadlock (KG0ZZ). In this well-organized tutorial, Dave takes us step-by-step through the theory, design, construction, and use of a 2m/70cm vertical dipole antenna. This antenna is perfect for limited space areas or for portable/emergency use in the field.rials list. Regardless of how you put everything together, the result should be an antenna with a reasonably low SWR (less than 2:1) across most of the 2-meter band. Depending on where you install your antenna, it should allow you to reach most nearby repeaters and make some direct simplex contacts as well. 22 ON THE AIR A Copper Tape Antenna for

finn apartments nashvilletreyten discordtsa line lgastevens cooked chitterlings 2m 70cm antenna diy redwood falls county jail roster [email protected] & Mobile Support 1-888-750-2888 Domestic Sales 1-800-221-7988 International Sales 1-800-241-8937 Packages 1-800-800-5495 Representatives 1-800-323-8413 Assistance 1-404-209-7149. Slim-Jim Antenna 2m / 70cm This antenna is has a special name here in Austria, some folks call it "president's antenna" due to the fact that OE3MZC the president of the OEVSV did a presentation on the IARU YOTA meeting in 2017. This report documents my building project one day before a planned SOTA activation where I want to use it.. holster for ruger 357 revolver Video on repurposing surplus 800mhz 5/8 wave antennas to VHF and UHF. These antennas have little resale value and as such are ready candidates for experiment...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. russellville family funeraloceanana pier live camera Cubical Quad Antennas. If you want to get a real signal strength boost for your 2-meter and 70-cm activities, please consider a cubical quad antenna. In this video, Dave Tadlock (KG0ZZ) discusses the theory behind cubical quad antennas and shows us how to design, assemble, test, and use a simple 2-meter cubical quad. state journal obituaries frankfort kyrecord courier ohio obituaries New Customers Can Take an Extra 30% off. There are a wide variety of options. Now its time to add the additional elements to the top and bottom of the collinear array. First add a ¼ 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 ¼ wave element is calculated as follows: 1/4 wavelength radiator = 300 / F / 4.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!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 …