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.Antenna DIY Builders, Welcome to the third antenna build of this DIY Antenna project. The selected antenna is a Dual Band 2m- 70cm J-Pole "Roll-up" Antenna. This is Dual Band 2m-70cm J-Pole Antenna that can be "Rolled Up" and conveniently transported in you Go Kit and un-rolled when on site. At you station atThis 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.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 ...Amazon.com: Diamond Antenna SRH770S Dual Band 2m 70cm Antenna with SMA-M Connector, 27.6" Long, 10W Max Power Handling : Electronics ... Build quality is very good. 73's. Read more. One person found this helpful. Helpful. Report. Ev. 5.0 out of 5 stars First one broken. Replaced and going great! Reviewed in the United States on May 10, 2020.Feb 22, 2017 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...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 blend2 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.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 ...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.Ladder Line 2M J Pole Antenna - Easy to Build. Ladder line is heavy duty and can easily handle the 50 watts put out by most mobile radios. A ladder line 2M j pole antenna is a perfect antenna to hang from a tall tree branch to boost your outgoing transmissions and to help you hear weak stations. Watch these videos to get an idea of how to ...Dipole Antenna Calculator. How to build a 2-meter cubical quad antenna. Tri-Band Fan Vertical for 40-80-160 meters. My 5-band attic antenna for Ham Radio. Ciro Mazzoni Baby Loop Antenna. DP200 7-54 MHz 500w Portable Dipole HF Antenna. High Quality Dual Band Antenna for on-the-go ops. Ham Radio: The Coat Hanger Antenna 2m/70cm dipole. Ham Radio ...A ground plane antenna for 2m or 70cm is one of the simplest antennas to build and get working, and it can work quite well for repeater or simplex operation. It is easy to build for other bands as well. I’ll show you several different construction methods that you can use, based on the materials you have available.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 ...Members of LEARC gathered to build a variation of a Moxon 2m/70cm antenna, which will later be used to track and communicate with others over satellites. Herbie, GI6JPO, had prepared the build materials in advance to speed up the assembly of the antennas. Lengths of PVC conduit were cut to length, with the holes for the elements …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)My homebrew 2m/70cm coax dipole antenna, made from 5 meters of rg8x coax cable, works pretty well.DIY 2m/70cm Antenna That is Better than What I Have? Right now I have a TWAYRDIO 20m/70cm Yagi that the manufacturer claims to be +9.5 dBi for VHF. I'm not sure how accurate that figure is, it seems a tad optimistic; but I'm happy with the antenna overall. I can hit all of the nearby repeaters near me, except one.Halbwellenstrahler auf 2m. b schwingt bei 70cm und verhält sich daher wie eine koaxiale Kopplung zwischen a und c, die bei 70cm ein Halbwellenstrahler sind. Zur optimalen Anpassung an 50 Ohm gibt es den Impedanzwandler, bestehend aus d und e. Die Länge von d und e ist eher kritisch, durch Variieren kann man ggf. das SWR verbessern.Both having YAGI and 25 watts or greater would be best. The j-pole will do that range in level terrain. 2m Slot antenna made with sewer pipe and aluminum tape. Tuning is easy. Moxons or quads - At those freqs, you can use dowel rods & wire for construction.A 2M/70Cm antenna should cover the popular 2 Meter VHF and 70CM UHF bands. Make sure to double check the specifications to ensure you’re getting the right antenna for your needs. ... Ham Radio: 2M/70Cm Skylab Build. Home-Brew 2M Antenna 143 – 148 Mhz. Final Thoughts On Selecting The Best 2M/70Cm Base Antenna. When selecting a …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 ...A Homebrew Four Element 2 Metre Portable Yagi Antenna; Build your own roll up slim jim antenna; DIY 2M Ground Plane Antenna; The Coat Hanger Antenna; Ham Radio Travel Kit (TSA compliant) 3 Easy Multi-Band HF Antennas You Can Build; Solar Cycle 25 is here--bands are heating up; Simple portable HF antennas with Tim (G5TM)How to Build a Dual-Band Antenna for 2M/70cm. Rubber Ducks are Kinda Like Rubber Chickens. Rubber duck nearly an isotropic source, but not as good. Victim’s head absorbs some of the RF (maybe that explains a few things...) Capacitance to body makes a “sortaground” that supplies half of the antenna plus a decent dummy load.Is your Ham Radio HT rubber ducky letting you down? Do you want to transmit a stronger signal to the repeaters? If so, I'll show you how to build a two meter...Practical 2m-70cm Antenna, Amateur Radio, Amateur Radio Innovations, Antenna Design, Antenna Design Techniques, DIY Antenna, DIY Antenna Projects, Duct Tape Antenna, Emergency Communication Antennas, Faraday Cloth Antenna, Faraday Material in Antennas, Ham Radio, Ham Radio Antenna, ham radio DIY, Homemade Radio Antenna, Lightweight Antenna ...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 ...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...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...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.Build your own 2m/70cm 3 Elements VHF by 5 Elements UHF Yagi antenna with excellent gain for both VHF and UHF operation. This antenna is designed for amateur band frequency for both VHF (2m) and UHF (70cm). The antenna has good reflection coefficient and VSWR ratio @ 1.2:1 at center frequency and 1.7:1 at band edge.Those work ok on 2 m but on 70 cm the radiation pattern is terrible. The YT clowns have probably never heard of antenna modeling. A better design is to make a 2 m dipole with one (or two) closely spaced (about 1 inch) 70 cm 1/2 wave parasitic element (also called coupled resonator).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?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.Aug 29, 2017 · 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...DIY 2m/70cm Antenna That is Better than What I Have? Right now I have a TWAYRDIO 20m/70cm Yagi that the manufacturer claims to be +9.5 dBi for VHF. I'm not sure how accurate that figure is, it seems a tad optimistic; but I'm happy with the antenna overall. I can hit all of the nearby repeaters near me, except one.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 ...Both having YAGI and 25 watts or greater would be best. The j-pole will do that range in level terrain. 2m Slot antenna made with sewer pipe and aluminum tape. Tuning is easy. Moxons or quads - At those freqs, you can use dowel rods & wire for construction.2 m 6.7 dB3.9 o. 70 cm11.0 dB1.4 o. The Centre Frequencies for the antenna shown is 145 MHz and 435 MHz. Comparison of Far Fields for the antenna at 435 Mhz and 145 Mhz. The antenna shows an SWR less then 1.3 between 430 and 440 Mhz and less than 2:1 between 140 and 150 MHz according to the Model.Members of LEARC gathered to build a variation of a Moxon 2m/70cm antenna, which will later be used to track and communicate with others over satellites. Herbie, GI6JPO, had prepared the build materials in advance to speed up the assembly of the antennas. Lengths of PVC conduit were cut to length, with the holes for the elements …Amazon.com: Delta2 Coms - Portable 2-Meter 144-148MHz VHF High-Gain Ham Radio Yagi Antenna - Made in USA : Electronics ... Quad Band Mobile Radio Antenna 29/50/144/430MHz 10m/6m/2m/70cm for TYT TH-9800 Plus,TH-9800D Includes 16.4ft Coaxial Cable and Bracket Clip. ... Protect & Build Your Brand; Become an Affiliate; Become a Delivery Driver;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 ...A 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 ...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-timersHAM RADIO: The Coat hanger Antenna 2m/70cm dipole. If you need an emergency antenna for the 2m/70 cm Amateur Radio Bands, look no further than your bedroom closet. Any of those metal clothes hangers will do nicely for an impromptu VHF/UHF antenna. In this video, Mike (M0MSN) shows us how a few hangers and some materials around you house or ...4 Nov 2019 ... Those explain the design and how to build your own. The DBJ-2 is a great antenna. I use mine for emergency communication volunteer work with the ...Nov 19, 2018 · Build your own 2m/70cm 3 Elements VHF by 5 Elements UHF Yagi antenna with excellent gain for both VHF and UHF operation. This antenna is designed for amateur band frequency for both VHF (2m) and UHF (70cm). The antenna has good reflection coefficient and VSWR ratio @ 1.2:1 at center frequency and 1.7:1 at band edge.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. …What you'll need to make a Slim Jim: Some balanced ladder line feeder - either 300 or 450 ohm will do - If making an antenna for 145MHz, then you'll need a length of 1.5 metres. For other frequencies, use the calculator later in this article. Some co-ax long enough to reach from the base of the slim jim to your radio.What you'll need to make a Slim Jim: Some balanced ladder line feeder - either 300 or 450 ohm will do - If making an antenna for 145MHz, then you'll need a length of 1.5 metres. For other frequencies, use the calculator later in this article. Some co-ax long enough to reach from the base of the slim jim to your radio.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 ...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 ...DIY 2m 70cm Rollable J Pole Antenna; Yet Another 10 Meter Moxon; A Thirty-Foot Mast using Home Depot parts. February 28. January 31. 2023 360. December 30. November 30. October 28. September 30. August 31. July 31. June 30. May 31. April 30. March 31. February 27. January 31. 2022 360. December 32. November 31. October 30. September 27. August ...A cheap and easy to build antenna made of coax cable Frank Bremer (PA0FBK) has published a guide that describes an antenna for 2m and 70cm, which is built from only one piece of coax cable. In principle, it is a variant of a J-pole antenna, providing a good match to 50Ω on both bands. The following picture illustrates the setup of the antenna.Paul VK4APN has sent me some plans for for a 2m and 70cm LPA that I intend to build for portable use, but does anybody have any plans for one that covers 50- ...by N6JSX 08/2013. This is my revised "BASE" 2m/70cm Copper-Pipe "J", a "how-to DIY" with an optional method to make a " PORTABLE" dual-band "J" for hotel travelers, …Amazon.com: 2 meter yagi antenna. ... HYS Dual-Band 9.5/11.5dBi 100W Yagi Antenna 8 Element Beam 2 Meter/70 cm VHF/UHF Outdoor Yagi Antenna with U-Bolt for 144/430Mhz Ham Mobile Digital Radio/Repeater (TC-YG08UV) ... Protect & Build Your Brand; Become an Affiliate; Become a Delivery Driver;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 andPut a SWR meter at the antenna between the small pig tail coming off the antenna and the feed line. Go to 144.300 MHz and check for SWR, then go to 147.300 MHz and check for SWR. If you have a 1:1.1 SWR at 144.300 MHz and a 1:1.6 at 147.300 MHz then your antenna is long, so move the shorting bar toward the coax connection to shorten the …We would like to show you a description here but the site won't allow us.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.. The yellow trace is the VSWR reading from the antenna analyzer. OnInkl. Test! Hocheffektive flower pot Duobandantenne fürs 2m und 70c 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 ... Connect the coax cable to the 2 parts of the dri 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 achieve a ...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 … But keep in mind that 2M and 70cm share a similar relati...
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