J antenne 2m 70cm

Free 2-day Shipping On Millions of Items. No Membership Fee. Shop Now This is a short video with modified the plans provided by for use with copper pipe and a Di-electric insulator. The whole. 2m/70cm Dual Band J-Pole by KK4ICE . If you have any questions about this project, contact KK4ICE@ARRL.NET. (Step-by-step instructions with photos can be seen below, following the project description and safety disclaimer.) This is an excellent performing J-Pole type antenna, constructed from readily available materials 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 built 2m - 70cm direct connection beam dimenision Just an update. I bought one of these 2M/70cm J-Pole antennas 5 years ago and it still works great! I just used it to receive a SSTV image from the ISS during the 40th anniversary of the Apollo-Soyuz Test Project space flight

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  1. J-Pole Antenna: 2 M / 70cm HAM One of the most-talked-about antennas is now better than ever... a true two-band antenna! Just when you thought that all the variations of the j-pole have already been explored, here comes the latest B-Square dual-band version that takes this popular but often-misunderstood antenna to new heights
  2. you will find this portable J will far exceed any other antenna, in the same setup, more than tripling your 2m & 70cm (440MHz) performance! Here is my step-by-step to make a portable (or base) ¾ copper-pipe J that breaks down into four (~24 long
  3. A 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to build. A J-Pole for 2-meters and 70-cm An Easy Dual-Band VHF/UHF vertical Antenna made with a TV twin lead and coax cable Simple j-pole antenna for 2 meter how to build a J-pole antenna for 2 meter band with many photos ecc. 6 Meter.
  4. Calculate the dimensions for a Slim Jim or J Pole antenna for HF, VHF or UHF A Slim Jim for 2m (145MHz) will be 1.5 metres long, and 70cm (433MHz) will be 0.5.

Open Stub J-Poles Photos of the OSJ 146/440. (Will also fit in the Antenna Bag if ALL the elements are removed from the bracket.) OSJ - Business Band, Marine Band. The SIMPLE 2m Copper 'J' Antenna : by KB9VBR on September 18, 2001 : Mail this to a friend! The J is a great antenna. While I haven't built this particular J-Pole, I've constructed several using similiar plans Eine einfach aufzubauende Duobandantenne für 2m/70cm Band,also auch für PMR446 Funkgeräte aus ganz normalen RG58 Kabel nach MIL-Standard.Passt in jede Tasche.. Visit the original J-Pole Antenna Store. KB9VBR J-Pole antennas are highly effective, affordable antennas for the VHF and UHF frequency spectrum. Hand crafted in the USA since 2001 and thousands of satisfied customers nationwide Personally, I think there are some misnomers out there about what these antenna are and can do. The true copper cactus j-pole was so named because it consisted of two j-poles, one for 2-meter and one for 70-cm. The top part of the main element was the 70-cm j-pole and was fed via coax through the main element

J-Poles: (OSJ = Open Stub J-Pole) Model # Description: OSJ 146/440. Dual Band - 2 Meters & 70 cm - Solid Aluminum - End Fed (SO239 Connector Only) OSJ 220. 220 MHz The antenna acts like a slim jim on 2m and a jpole on 70cm. The secret formula I will leave for the history books. But this design yields excellent results compared to many other dual band antennas Authentic N9TAX VHF/UHF Slim Jim J-Pole For HT 2m 70cm Antenna 16' Coax. $28.99. 11 sold. Authentic N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole. $23.99

Build a DIY 70 cm / 440 MHZ J-Pole Antenna Here is an inexpensive J-pole antenna that is easy to construct. In about an hours time, and about $10 worth of materials, you can have a great performing omnidirectional j-pole antenna Figure 3: 2m dipole or J-pole (free-space) vertical radiation . pattern (black) and the same antenna on 70cm (red). Fortunately, there is an easy solution. Install 70cm stubs on the 2m antenna to create a good UHF radiation pattern. Many commercial HF antennas use this technique to achieve good patterns on their multi-band antennas The 2-m-J-Pole can be used on 70cm, too with an SWR <1,6. SWR 145-146 MHz <1,5. SWR 430-440 MHz <1,6. The dimensions of A, B and C are in the table below. Attention: The mounting in a plastic pipe or with tape on a fishing rod will detune the antenna to lower frequencies and needs a little bit of correction Hier zeige ich ihnen Aufbau eine einfache J-Antenne fur 2m/70cm nach VE3ELB Mann braucht fur 140mm lange 40×40mm Winkel Die vertikalen Elemente sind aus Alu-Rohr mit einem Durchmesser von 8 bis 12 m A J-Pole for 2-meters and 70-cm - related links We thought you might also be interested in these additional web sites, selected from the same category: A 146 Mhz J-Pole Antenna - A 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to bu..

Dual Band J Pole 2M-70cm - YouTub

Homemade 2M/440 J-Pole for $35 - KK4IC

bers have made many 2 meter tape measure beams for transmitter hunting. Working the OSCARs as Well More recently I became interested in working Mode J OSCAR satellites 2 meter FM phone toward the satellite, 70 cm FM phone from the satellite. What kind of antenna should I use? At a local club meeting I leamed that there are several com Copper-pipe J Antenna 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, restricted apartment dwellers, or for limited balcony/patio use SMA Male Antenna Dual Band 2m/70cm Whip Handheld Radio Antenna Portable Replacement for YAESU/Vertex VX-110 VX-130-132 TYT TH-2R TH-F5 TH-F8 Baofeng BF- UV3R Ed Fong's Dual Band VHF/UHF antenna - PART I. Dual Band Mobile Halo Antenna - 70cm & 2meters by N6TWW. 2 Meter Twin Lead J-pole Antenna. 5/8 wave J-pole antenna for 145 MHz. Dual & triband home base antenna (Andrews, Nagoya & Diamond). 2m Ladder Line J Pole

2m-70cm Antennas - ham-radio

  1. The Vertical Bazooka Antenna 2 Meter Vertical Bazooka - Build A Vertical Bazooka from Coaxial Cable by Building a Dual Band / 70 cm J-Pole Antenna. Tim Wenzig
  2. Dual Band VHF/UHF Slim Jim Antenna. by Al Peter, AC8GY. As I was setting up my amateur radio station, one requirement was for 2M and 70cm antennas in two locations. My main shack location has a commercial J-Pole Dual band mounted on a short mast. My workshop under the garage needed to have a separate antenna, preferably hung from a nearby tree
  3. Free Shipping Available. Buy on eBay. Money Back Guarantee
  4. Dual band 2m 70cm Slim Jim Antenna The N9TAX Slim Jim antenna is the highest quality roll up antenna available today. * Dual Band 2m/70cm (144-148 / 440-450.
  5. Analysis to suggest you really can use a 2 meter J-Pole in the 70cm band. Categories Antennas Tags 2m, 70cm, J-Pole. 1/2 Wave vs. 5/4 Wave VHF EZNEC Shootout

J-POLE BASE ANTENNA 2 meter 70cm Dual Band Heavy Duty Amateur Ham Radio Scanner - $38.00. Dual Band 2 Meter/440 J-Pole Ham Radio Antenna Product Description DUAL BAND 2 METER/440 J-POLE HD BASE ANTENNA Why spend good money on roll up antennas that easily break and the SWR is all over the place when a leaf blows by J antenne 2 meter & 70cm Ludo ON5CGZ bracht op onze vergadering een J-antenne voor 2m en 70cm van WIMO mee. Metingen in ons vergaderlokaal met de VNWA toonden wel resonantie op 2m en 70cm, maar de nabijheid van mensen en muren bemoeilijkten sterk de metingen ARROW ANTENNA OSJ-146/440 Dual Band 2 Meter / 440 MHz J-Pole Vertical Antenna. Dual Band - 2 Meters & 70 cm - Solid Aluminum - End Fed (SO239 Connector Only

2 Meter Amateur Radio J-Pole Antenn

  1. Home > ANTENNAS > VHF/UHF/SHF > VHF-UHF MOBIL > VERTICALES > EAntenna EA270J J-POLE 2m-70cm. Maximize. Previous. Next. At each antenna, find a serial number and.
  2. I have the OSJ 2M/70cm j-pole from Arrow. It's about 12 feet off the ground. I'm using 25-foot of R8X coax. Further, I'm mainly *trying* to use the antenna on 2M. However, I can seem to hit very many repeaters. I have much better performance on my 5/8 wave magnet mount on a cookie sheet
  3. Antenna J-POLE 50 mhz 145 mhz sizing calculation. Click Votes Antennas J-POLE; 2m-70cm antennas super jpole, VE3ELB: 440 Mhz J-Pole Antennans, WB8ER
  4. KN9B - 2M / 70 cm J-Pole . Visit. KN9B - 2M / 70 cm J-Pole. More information J-Pole Base Antenna 2 meter 70cm Dual Band Heavy Duty Amateur Ham Radio Scanner
  5. 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.
  6. Best antenna for 2m/70cm HT (Yaesu FT-60R) for outdoor/SOTA activation (self.amateurradio) submitted 2 years ago by i-brute-force I have been searching here and there for a good antenna to carry on my hiking, and it seems like it usually boils down to either a yagi antenna or a slim jim j-pole antenna

The use of a 2m/70cm antenna duplexer to clear up a Mode-J desense problem has been employed by many satellite operators and it works! Even when the antennas are close together and 100 watts or more are applied to the 2-meter antenna, the 60dB of rejection provided by the duplexer should clear up any desense problem This page illustrates how to build Twin-lead J-Poles (VHF / UHF). You can make them as roll-up J-Pole antennas. These are made from 300 ohm twin lead (old style TV lead-in wire). Make several to carry in your Go-Kit, in your car, etc. Making these J - Poles makes a good project for your radio club or ARES Group

True Dual Band 2M/70CM Stainless Steel J-pole Antenna eBa

Simple stacked J-pole for 2M & 70cm Following the death of my cheap fibreglass tri-band collinear, I decided to have a go at constructing a simple dual band antenna for use at home. I was looking for something that was vertical, omnidirectional and with good gain that I could make quickly and easily How To Build 2m 70cm Vertical Antenna.pdf Free Download Here Simple J-pole antenna - Welcome to the Dallas Amateur Radio Club DIY 70cm - 440 mHz J Pole Construction Plans Author: Mike Category: Antenna , Ham Radio 2 Mar 15 I cut a length of RG-8X foam coax to a length of 67″ for the feedline, and coil up 4 turns (as small as you can get it) just below the horizontal part of the matching section

I heard Nelson Antennas makes a Great light weight roll up. I plan to get one to take w/ my into the woods (for longer trips or when hiking by myself) The quality you will get from N9TAX will be half the cost than doing it yourself. His antennas are beyond great. --I have the 2m/70cm version but they come in multiple bands Workman Magnetic Mobile Antenna Ham Radio 2 Meter/70 cm 140 to 150 and 440 to 470 MHz KRDB. by Workman. $21.85 $ 21 85 Prime. FREE Shipping on eligible orders. More. J-Pole 2m/70cm £19.00 By simonthewizard March 4, 2015 145mhz 446MHz amateur radio antennas J-Pole Sometimes a lot of requests arrive here via the contact and this is another one

The antenna costs almost nothing to construct and should handle up to 50 Watts of power. The antenna is broad-banded and should therefore provide a low SWR across the entire 2-meter band. A J-Pole antenna is a half-wave vertical fed at its base through a shorted quarter-wave stub acting as a transformer matching section I prefer the 2 meter Slim Jim. Made from 1/2 Copper. (double that of the J-Pole antenna) I did make a ground plane for 70cm and 2m from an ARRL manual. It. This antenna works as follows: a, b and c are together a half wave radiator at 2m. b resonates at 70cm and behaves therefore as a coaxial coupling between a and c, which are each other a half wave radiator at 70cm. For optimal adaption to 50 ohm there is the impedance transformer, consisting of d and e The 2 meter J-pole modified for both VHF and UHF operation. TBJ-1 triband base antenna 2mt/220 MHz/70 cm -- $60 - includes shipping with 6ft of pvc pipe

J Pole : Building J-Pole amateur radio antennas - The DXZone

Slim Jim / J Pole Antenna Calculator - M0UK

Blackbird VHF/UHF J-Pole Antenna - Miklor outdoors hunting camping SHTF GMRS radio communications antenna battery electronics scanners digital computer software hardware laptop iPad iPhone eBay music radi Q: I built the dual-band J-pole antenna from the article in the September 1994 New Ham Companion (An Easy Dual-Band VHF/UHF Antenna, page 61), but I just can't get it to work. What can I do? A: Try adding a balun to the coax. A balun is necessary because a J-pole antenna uses a balanced feed (th All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc

Video: Arrow Antenna J Poles 2m 146 70cm 440 OS

* VHF/UHF Dual Band Gain Base Antenna for 2 Meter & 70cm Amateur Bands! Workman Saturn B100 Base Station Apartment Attic Patio Balcony Boat Truck Antenna. by Workman The 2m/440 Super J-Pole . This antenna is also known as the copper cactus (because it kind of looks like one of course!). It is an outstanding performer, especially when you get it up in the air

Model # Band Stacked Element Phasing/ Wavelength Gain/dB Watts Connector Type Weight Lbs. Length Foot Wind MPH; D130J: 2m / 70cm / 23cm: 25-1300 MHz. Wideband Discone Build A 9 dB, 70cm, Collinear Antenna From Coax By N1HFX Recently the RASON technical committee was hard at work at the repeater site repairing our 2 meter repeater antenna

The SIMPLE 2m Copper 'J' Antenna - eHam

  1. 2.8 Can the Antenna Size be Scaled Down or Up for Other Bands? • Although any piece of wire can radiate, it may not be very efficient. • The antenna published here has been carefully designed by me for the 2m band, and when scaled may not produce good results. It may still be better than many other published J-poles
  2. Gain: 2.1 dBi (6db gain over a 2 meter J pole used at 450 MHz) Impedance: 50 ohms The published papers on these antennas are attached. Building these antennas are difficult because of the scarce availability of materials. Twinlead has long been obsoleted. All of our twinleads are special ordered from JSC wiring
  3. VHF/UHF Dual Band J-Pole By: Ed Fong WB6IQN email: Figure 3 The 2 meter J-pole modified for both VHF and 220 MHz base antenna - uses J.
  4. I have the plans for a 2M Jpole antenna and was wondering If there are any plans out there for a 2M/70CM combination antenna. I have heard that a J Pole will work pretty well for 2 meters
  5. The most popular antenna for homebrewing is the 2 meter J-pole. They may even have a low SWR on 70 cm, though their high angle of radiation makes them poor performers
  6. 2m / 70cm 9 elements yagi (#1) (February 2012) Some time ago I decided to get a new 2m antenna, one which would enable me to work more DX stations, in particular the ones in and around the United Kingdom

PMR 446 Prepper 2m / 70 cm Duobandantenne J-Antenne

the SIMPLE 2m/440 Copper pipe J by Dale Kuby Kubichek, N6JSX 03/2001&2008 Can you use a pipe cutter or a hack saw, can you solder - then here is how to build a SIMPLE J antenna that will more than double your 2 meter (and even 440) performance! The J antenna goes back many years, long before I became a ham Big Savings on 2m 70cm Antenna. Free 2-Day Shipping with Amazon Prime 2m 70cm Dual Band Open Stub Solid J-Pole : I make these antennas out of solid, aircraft-grade aluminum, no weak tubing! These antennas are welded, so they are strong, have low resistance between parts Dual Band Base Station VHF/UHF J- Pole HAM Antenna Review. 6m/2m/70cm Yagi Antenna (Part 1/9) Built from Old TV Antenna. 2m Copper J Pole antenna. Indoor/Outdoor 2 meter/70cm Slim Jim/ J-pole Roll Up antenna. 70cm 432MHz DIY Yagi / Beam Antenna. 2 Meter and 70 cm Dual Band Vertical Dipole The X-Quad is an improved design of the well known multi element quads. They are especially designed for amateur radio, with the following characteristics: Switchable polarisation possible (hor, vert, circ. right, circ. left, diagonal) High gain compared to other antenna designs Short boom length.

Comet SMA-24J HT Duual Band Antenna. SMA-24: Dual-band 2M/70cm HT Antenna Super flexible and lightweight-Made from the same material a 2 Meter 70cm Dual Band J Pole Antenna 144/ 440 Mhz Ham Radio With Weather Boot. 2 Meter 70cm Dual Band J Pole Antenna 144/ 440 Mhz Ham Radio With Weather Boot ARROW ANTENNA OSJ-146/440-2 Dual Band 2 Meter / 440 MHz J-Pole Vertical Antenna 2 Piece Elements. Dual Band - 2 Meters & 70 cm - Solid Aluminum - End Fed (SO239. On this page are designs for Dual Band 2M / 70cm antennas. All antennas are 50 ohm designed driver. These Yagis have a unique element called a 'Open Sleeve' This is ideal for most dual and radios that us a single antenna port for both VHF and UHF. Designed primarily as a 2 meter/ 70 cm dual band antenna, the SE-DBj also makes for a great scanner antenna for 28 Mc. to 900 Mc. reception

2m J-Pole Antenna: It was a coincidence when I came to the homepage of KA1FSBand saw his construction of a J-Pole antenna for the 2m Band. I decided to build this antenna by the same methode however I used the input joke as dexcribed on the homepage of Martin, DK7ZB The radiation pattern is then the same as every 2m vertical half wave antenna, or also like a 2m J-pole antenna. Seen as a 2m half wave antenna, the piece of undamaged cable jacket in the middle does not really play a role. If we look at the antenna as a 70cm antenna (435MHz), it will be completely different Authentic N9TAX VHF/UHF Slim Jim J-Pole For HT 2m 70cm Antenna 10' Coax. Use with Baofeng, Wouxun, TYT, Yaesu++ See Description 2 meter J Pole Antenna VHF UHF. 2 Meter / 70 CM J-Pole Antenna Back Up This antenna is a J-Pole antenna I purchased on the Internet in April, 2015 from Arrow Antennas after I arrived in Hawaii. I have a similar antenna in storage back on the mainland

KB9VBR J-Pole Antennas Amateur Radio VHF and UHF antennas

The $4.00 Ham Radio Satellite Antenna Some planning ahead of time on paper allowed me to make room for an extra 70 cm director just past the last 2 meter director Usually highly directional antennas are used on VHF and UHF, which have the capability to bundle the radiated energy in one direction and eliminate interferences Big Wheel Antenna for 2m, 70cm and 6m Big Wheel Antenn Cushcraft 2M/70cm Wideband Yagi Beam Antennas. Increase your range by selecting Cushcraft's 2M/70cm wideband Yagi beam antennas. You can point the. A single antenna can cover the entire amateur 2m/70cm allocation with more than acceptable SWR. You can either homebrew your own one (very easy and lots of designs available on the internet - just use Google) or buy a 2m/70cm antenna from any shop that sells amateur radio equipment Antenna with SMA Male Connector. SMA Male Antenna: 2 Meter Roll-Up J-Pole Antenna, 6 FT RG-174/U coax, SMA Male connector.Fits SMA Female radio connector on many Alinco, ICOM, Kenwood, Vertex and Yaesu handheld radios

There are a wide variety of J-Pole feed types. A company called Arrow uses a piece of angle aluminum for their shunt in their dual band 2m/70cm J-pole. The configuration is a variation of what the ARRL Antenna Book calls an open stub feed Amateur Base Antennas : Arrow: CR 146/440 Corner Reflector 2m/70cm: GP 52 Vertical 6m: GP 146 Vertical 2m: GP 146/440 Vertical 2m/70cm: OSJ 146/440 Vertical 2m/70cm: Chameleon: V 2L Vertical 80m-70cm KN9B - 2M / 70 cm J-Pole. KN9B - 2M / 70 cm J-Pole Build a DIY a 2 Meter Vertical Antenna. Nathan Parks. Ham Radio. Antena Hd Ham Radio Antenna Radio Activity. A Dual Band VHF/UHF J Pole SCARC VHF/UHF J POLE ANTENNA This antenna provides continuous coverage of the 2 metre (144 - 148MHz) and 70cm (430 - 450MHz) bands and is an excellent choice for base station use

2 Meter - 70cm Super J-Pole WorldwideDX Radio Foru

The good thing in this case is that a full wavelength in the 70cm band means; a 70cm (27.6 inches) long antenna! In a quad this means that every side is 17.5cm (6.9 inches) long, almost nothing! I got some PVC pipe in a home repair shop. This set me back about 50 euro cents per 2 meter (which means about 0.65 USD for 6.6 feet) Hi, Has anyone made this style antenna for a base station and how did it perform. There are a few.

Dualband, dual-band mobile ham radio antenna, high gain mobile 2M/440 antenn A 2 element dual-rectangle beam for 70cm: Antenna Overview : VHF (2m/MURS) Moxon The antenna described here is a direct-connect dual-rectangle beam for use on 70. Dual band Yagi for 2m and 70cm No-compromise yagi for 2m and 70cm, consisting of a 3-element yagi for 2m range and a 6-element yagi for 70cm. Separate systems with nearly zero interaction between the two antennas

Arrow Antennas JPole 2m 70cm Dual Band Repeater F

DIY instructions for building Antennas for HAM, Radio, TV, GSM, Wi-Fi. With BalUn, Cables and Connectors. AWX for 2m and 70cm . Details HAM Multiband 2m Slim-Jim from 450-ohm Ladder-Line The Slim-Jim is a bit of a classic - building one is almost certainly a rite of passage and you'll be glad that you did: It's easy to make, fairly easy to tune and rolls-up for transportation Antenna J-Pole untuk 70 cm Band atau 2 m Band Oleh YC0PE - Ridwan Lesmana Rubrik pembinaan dalam Teknik Radio kali ini menampilkan suatu jenis antena yang disebut J-Pole. Disedbut demikian mungkin karena bentuk fisiknya yang menyerupai huruf J ( JULIET ) Characteristics. The J-pole antenna is an end-fed omnidirectional half-wave antenna that is matched to the feedline by a quarter wave parallel transmission line stub of Lecher system form

Anyway, my old made-from-thick-wire double J-pole for 2m needed replacing as it was getting tired after have been up for a couple of years, and doubling as my 70cm antenna it gave marginal performance at best 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) ARRL Product Review of the M2 6-Meter HO Loop Antennas. Reviewed by Bob Allison, WB1GCMAssistant Laboratory The K6MYC on Antenna Testing. Some TIPS on measuring VSWR and troubleshooting M2 Antenna Gain: dBi vs. dBd. Antenna gain is measured in either dBi or dBd.It is important to note that