2m 70cm antenna diy
Magnetic Loop Antennas. I decided to experiment with Magnetic Loops. First, I tried something simple. A 145MHz 2m loop. Using the software at the bottom of this page, I worked out that a 36cm length of wire, will need a capacitance of around 3.6pf, and around a 50% efficiency. Making it any larger, and more efficient at 2m requires too small of ...I plan on building single antennas on 2m (10 elements +) and 70cm (14 elements +) for SSB and either singles for FM or perhaps co-phased, not sure yet. I'm ...May 30, 2021 · This is post 2638 in a continuing series of simple ham radio antennas. Thanks to Clint of "Oxford Shortwave Log" for this coaxial collinear antenna system for 2m and 70cm. Depending on the materials in your "junk box", you could build this VHF/UHF antenna for almost no cost. Here are some comments from Clint:
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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 ...Keyword Research: People who searched homemade ham antenna 2m 70cm also searchedThe 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.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...Ham Radio 2m/70cm Vertical Dipole Antenna. A simple ham radio 2 meter and 70 cm antenna for fixed or portable use. Video Rating: 4 / 5. May 28, 2012.The N5WVX 2 Meter 7 Element Yagi with a "Twist". The N5WVX 2 Meter 7 Element Yagi with a "Twist". ( Cool Elements) Based on the 2 Meter Beam Project by. Larry Morgan, AG5Z. It's hot weather in Texas in July and Larry Parker, N5WVX, shows us a novel way to make these "cool" elements for a 2 meter Yagi and also his method of building a gamma match.XM satellite radio has made its way into homes, automobiles and personal audio players, largely on the strength and quality of its reception. Every now and then, XM antennae break ...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 YagiMy homebrew 2m/70cm coax dipole antenna, made from 5 meters of rg8x coax cable, works pretty well.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" …1. Here is what I have. • A Baofeng Uv-82 transceiver. • A 1/2 inch 10 foot PVC pipe. • 3 1/4 inch x 36 inch Aluminum rods. • 2 1/4 inch x 48 inch Steel rods (I know they'll rust, it's just temporary to get it to work, I'll get aluminum later) I don't have any coaxial cable (don't know the best type to get) and don't know how to match ...Antenna, Vertical, High Gain Base, HD Fiberglass, 2m/70cm, 330/250 W, UHF Female/SO-239, 17 ft. Height, Each Part Number: DMN-X510HDM 4.56 out of 5 stars ( 25 )Construyo, a Berlin-based startup that offers a “holistic” project management service that connects the architecture, engineering and construction (AEC) industry, has raised €2 mil...NOTE: Comparative testing of this antenna against one without the "choke" showed that the choke is NOT needed.Homemade vertical dipole for HAM 2 meter and 7...Retrieve the Slim JIM loop and begin inserting the disc separators. Insert the element at one hole at a time at the top of L2 then slide it onto L1 until the second hole aligns with the tip of L3. Insert this wire into the second hole and continue pushing to the top of the element. Do the same with the others.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 ...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.
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 ...Build a 2m VHF Sleeve Dipole; Original patent design for Folded Dipole antenna; Edison Fong (DBJ-1) J Pole; Edison Fong (DBJ-2) J Pole Roll Up; Edison Fong - Tri-Band Antenna for 2m, 1.25m and 70cm; Build a 2-Meter Vertical Dipole Array; Service Manuals. Alinco DJ180 Service Manual; Icom IC-2GA/GAT/GE; Icom 02A, 02AT, 02E Service Manual; Icom ...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 ...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.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 ...
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 .n9taxThe Diamond X-5000 is a fixed station vertical antenna designed for use on the 2m, 70cm, and 23cm amateur radio bands. With its sleek design and sturdy construction, this antenna offers excellent performance and durability. Whether you are a seasoned ham radio operator or just starting, the Diamond X-5000 is a reliable choice for your communication ……
Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Here are some of Mike's comments: "The con. Possible cause: 1. Here is what I have. • A Baofeng Uv-82 transceiver. • A 1/2 inch 10 foot PV.
85 watts. 70 centimeters. 420-450 MHz. 50 watts. COMPACtenna Model 2M/440 Dual-Band NMO Mobile Antennas. COMPACtenna Model 2M/440 Dual-Band NMO Mobile Antennas are very small, high performance dual-band antennas. Even though they're only 7.5 inches tall, they provide superior Omni-directional coverage far beyond their size, using a unique ...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 ...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,
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 ...2M Quarter Wave Ground Plane Antenna - Ham Radio - TheSmokinApeIn this video we build a DIY 2 Meter Quarter Wave Ground Plane Antenna. Please leave any quest...
I show you how to quickly build a DK7ZB yagi with 4 elemen This calculator can be used to design a Quarter Wave Ground Plane antenna, with radials. The radiating element is a quarter wave (λ/4) and the radials are 12% longer. There are usually four radials, three being a minimum, but you could use up to six. This is a true unbalanced antenna, with a feed impedance of around 50Ω and therefore a great ...Or better yet, build one? I'm sure a 40 meter vertical will also receive some FM and vhf signals, as will your 2m/440 antenna, but not well. +- ... Fig. 1: (Left) AN-SOF model of dual-band vertical dipoleHere i present the measured SWR of the a Another: HAM RADIO: Easy SlimJim / J-Pole Dual band Antenna Build for 2m/70cm. Yet again thanks to a book I purchased many moons ago, I have found the perfe...A 2m piece of wire would be a longwire for 2m. 2.5m would make it resonant (instead of anti-resonant, even ¼wl multiple, high-Z) so it wouldn't need a transformer. Then you have to tune it for transmit — tuners are uncommon above HF, so the antenna would have to be trimmed. An SWR meter or antenna analyzer would do it. For this project, you will need: 1″ OD diameter PVC pipe at l 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.To construct the antenna, first select a suitable length of grey 25mm conduit (as a minimum 1m but if you make it longer, you will have more room below the coil to attach to your antenna support). Basic arrangement of the 2m Half-Wave version. Drill two holes into the side of the conduit for the choke coil. The ‘top’ hole will be approx ... This video shows my dual band antenna that I madeThe Slim Jim antenna is a flexible antenna made from laOne thing that people hate when they have a TV antenna is when it Dual Band 2m-70cm J-Pole Antenna DIY project that can be "Rolled Up" and conveniently transported in you Go Kit and un-rolled when on site. At you station at...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. Paul VK4APN has sent me some plans for for a 2m and BUILD AN HF ANTENNA TUNER MAKE A HOMEBREW HF-VHF ANTENNA TUNER ... 80m - 2m. 100W PEP - 30w carrier. just a simple tuner. Tuner mark 2. 500m - 70cm. ... Normal use will be HF and perhaps some circumstances in VHF bands. I have tuned my HF antenna to 70cm but only as a test.•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 12 Slim Jim Antenna Project – VU2RMU. 2 Meter Slim Jim Ant[DIY 100watts RF dummy load. Diamond F22 restorationSection 1: antenna tutorial How to build a tu The dimensions are below: The dimensions of the 2m beam antenna, centered on 144.4MHz. Click for a larger image. Horizontal radiation pattern. Vertical radiation pattern. Elevation plot with the antenna at 5 metres above ground, for example in a portable set-up. Peak gain 17.1dBi at 6°.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)