J pole antenna 2m 70cm

Hang it and operate with MFJ roll-up J-pole antennas anywhere and everywhere! Authentic KB9VBR J-Pole Base Antenna 2 meter dual band amateur ham radio scanner DELUXE MODEL ROLL UP 2M/70CM ROLL UP J-POLE/SLIM JIM ANTENNA WITH 10FT COAX End Fed Dipole 80-6 meter Portable HF Antenna Matchbox System. Small,Portable,Lightweight and VERY VERY effective but RG-174 is a lossy coax by nature and on my basic model antenna at 5 feet of coax there is really no loss to speak of but just 0. There is a web page on adding adjustment screws to copper cactus antenna to tune it. It has been around for many decades [1]. 00. A 2m J-Pole is a dual band on 70cm. 440 Mhz J-Pole Antenna plans pop - Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. 83 shipping; 820 Sold. Previous. Unfollow Dual band 2m 70cm Slim Jim Antenna to stop getting updates on your eBay feed. 5 metres of ladder line as the main antenna that can roll up neatly in a coil and can be used hanging from a curtain rail above a window, dropped down from a tree, or taped to the side of a fishing pole The original Ed Fong Dual Band VHF/UHF 70cm/2m J-Pole PVC Pipe Antenna : Eye-On-Stuff. Here is a picture of the antenna mounted on the new mast. au . The bottom J-Pole is roughly a standard J-Pole. Add to Cart. The Dual Band version of the Slim Jim antenna met my requirements as set out at the beginning of the project. J-pole antennas for 2m-40m with Wireman-cable, DK7ZB. November QST: Recycling TV Antennas for 2-Meter Use - Page 1 ARRL 1996 QST/QEX/NCJ CD C i ht (C) 1997 b Th A i R di R l L I Figure 1—A gold mine of antenna components after complete disassembly. 5 or lower across the 2 meter band and works well on the 70cm band also. J-pole 145/220/440Mhz Tape Measure 2M Beam + Offset Attenuator This antenna is based on articles "A Parasitic Lindenblad Antenna for 70cm" and "An EZ-Lindenblad Antenna for 2 Meters" by AA2TX, published in QST magazine. Yes, you will have to add the cost of quality coax as you would with the most expensive antenna. The lower half of the antenna becomes a 70cm j-pole. This is so I can use my 2m and 70cm handheld in the car. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. My workshop under the garage needed to have a separate antenna, preferably hung from a nearby tree. 88 - Indoor Loop Antenna for 80m to 30m. The 2-m-J-Pole can be used on 70cm, too with an SWR <1,6. Next. I have a similar antenna in storage back on the mainland. AUTHENTIC N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole - EUR 21,06. pattern (black) and the same antenna on 70cm (red). The great thing about J-Pole antennas is their simple design and excellent performance. AUTHENTIC N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole - $23. eabyAuc dual 16 Connector Options The UHF Female (so-239) is the default connector. arrowantennas. 5 metres. I just purchased my second 2 Meter Break-a-Way J Pole from Michael for field day and ECOMM use. Ham Radio Antenna Security Surveillance Ants 2m-70cm Vertical Dipole Element Lengths. With the main radiation coming from the top section. 95. Old TV VHF UHF antenna basics - DIY antennas from surplus 800mhz antennas for 2m 70cm and dual band Video on repurposing surplus 800mhz 5/8 wave antennas to VHF and …2 Meter 440mhz J Pole Antenna - Vhf Uhf-24ft Rg58 Coax Cable - Pl259 Male . The J-pole antenna is a mechanical 3/4 wave vertical antenna. The simplest way to make a balun is Find j pole antenna from a vast selection of Antennas. You really need an antenna analyzer to build this antenna and be confident that you have the dimensions correct. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim After quite a hiatus to update the Amateur Extra Class videos, I’m back to the Ask Dave series. The N9TAX Slim Jim antenna is the highest quality roll up antenna available today. A dual-band J-pole makes an excellent 2m and 70cm antenna, but there are lots of other ways you could go. 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. The collinear J-pole will radiate 1000 watts with no sweat. No endorsement may be inferred from the mere listing of a URL or link. This antenna is not designed to be connected directly to a radio. My favorite feature is the versatile feed adjustment The N9TAX Slim Jim antenna is the highest quality roll up antenna available today. The secret formula I will leave for the history books. I have covered J-Poles quite a bit on this site [2]. And 70cm Antenna Without Radials By: It was a stacked Tri-band J-pole antenna as shown in Figure 4. J-Poles: This section has J-Poles antennas. J Beam Project 2 Meters and up N3SDO. Apr 21, 2014 · This is a short video with modified the plans provided by http://ve3elb. For home use, I'd recommend a dual-band J-Pole or Ground Plane antenna. I've been producing these antennas professionally for nearly a decade now and have sold over 15000 units. The W-2000 is fibre glass encapsulated and pre-tuned for 2m and 70cm with a manually tuned radial for 6m. You can calculate how to build a VHF or UHF copper Cactus antenna. The basic J-pole antenna is a half-wave vertical configuration. The Super J-Pole Antenna(Collinear Design) Below is a Javascript for calculating the lengths of tubing to be used for the construction of a Super J-Pole. at 1. 85 - Backpack J-Pole Antenna for 10m, 6m, 2m. creates an end fed dipole yet still retains the j match system. org. The higher you mount it, the better performance you will get. Here is an inexpensive J-pole antenna that is easy to construct. There are measurements on building Twin-Lead portable J-Pole for your go-kit. Although it is scheduled to be published in Tars Talk in a future issue, I thought it would be a good idea to add it to the download page of the website before publication. Because of the intricate tuning, we only sell this antenna with the pvc pipe. The J-Pole antenna, more properly known as the J antenna [6], is one of the most popular antennas for 2m vertical use in the amateur radio ranks. I’m trying to build a 146MHz j-pole and I saw the 70cm antenna you had on the last picture and nownI am really 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. Buy your Sandpiper WSJ-430 Folded 70cm J Pole Antenna from Radioworld. DBJ-UHF was developed from a grant from AC Daughty to develop a low cost medium gain MESH antenna for UHF. Making these J - Poles makes a good project for your radio club or ARES Group. This antenna is complete with exception of the 5 feet of ¾ inch Class 200 PVC pipe needed for the antenna. 25m and 70cm; Build a 2-Meter Vertical Dipole Array Previous Post Previous Build the 3 x 5 Elements 2m/70cm Dualband Yagi. 2M Aluminum Slim Jim Antenna. Source: "The Copper Cactus J-Pole for 2m and 70 cm", by John Post KE7AX, 73 Amateur Radio Today, Feb. Radio Shack # 21-961 3/8"-24/SO239 Mount (Mobile CB Antenna) The EAntenna EA270J is a vertical antenna dual band J-Pole optimized to give 6 dBi in the 2 bands with one run of coax. 99. A very easy to make and versitile antenna. Here are the Plans I used. Simple J-Type 10m Vertical by W6IOJ, Sept. VHF/UHF Flexible 2m 70cm Ham Radio High Gain Antenna Female for WOUXUN Walkie $32. 2 Meter 70cm Dual Band J Pole Antenna 144/ 440 Mhz Ham Radio With Weather Boot . Jerzy. Calculate the dimensions for a Slim Jim or J Pole antenna for HF, VHF or UHF - Including velocity factor! I was prowling around looking for 2M j-pole information a while back and happened onto your slim-jim calculator. Bands covered. I'm seeking a directional 2m/70cm antenna with substantial gain over efficient omnidirectional antennas, such as my roll-up J-pole and my mobile antenna. Fig 24—Dimensional information for the 222-MHz ground-plane antenna. Pctel Maxrad - $33. If you prefer different it is imperative that you message me the connector type immediately after ordering. Of all simple vertical antennas over ground, the 5/8 wave radiator has the lowest angle of radiation, however the base of the 5/8 antenna presents a relatively low impedance, not the high impedance offered by the ¼ Kevin Custer W3KKC, your webmaster, has also built several versions of this antenna using this information and feels that out of all of the collinear construction articles he has seen that this is the best. the antenna. This resource is listed under Antennas/2M which is almost twice the gain of a J-Pole and 5 times the gain of a 1/4 wave ground-plane antenna. Keep it away from metal objects – the tuning will go a bit wonky if there’s any substantial metal nearby. The best part about it is that it can be used on 2m and 70cm and it is cheep and easy to build. Whenever you stack antennas the impedance will change (two 50 ohms antennas will give 25 ohms). 5 months old. $22. Our UHF Slim Jim Antenna delivers up to 6dbi of gain on the 440 – 470 Mhz UHF bands, which is almost twice the gain of a J-Pole and 5 times the gain of a 1/4 wave ground-plane antenna. DISCLAIMER: Any links provided are for the reader's enjoyment. The traditional collinear J-Pole, aka Super-J, improves J-Poles: This section has J-Poles antennas. 0:1 across 70cm. Realizzazione di una antenna J-POLE VHF – UHF, IK1BLK. J-Poles: This section has J-Poles antennas. On 2m, the SWR was flat right across the entire band. $20. bandwidth). Cut out 3 inches of the center part of the ladder line. pdf), Text File (. I built two versions -- one free standing and one backpack version for camping. J-Pole Antenna Design. dual band j-pole creates connectivity problems when connected all the way up vote 2 down vote favorite. Versions that he has built include 2M, 220, and 440 models, all for FM voice repeaters. Most people make these for 2m use, but you can make them for 70cm use if required. J-pole 145 mhz,VHF antenna. TRAM 1185 Dual Band 70cm/2m Mobile Antenna Review : Eye-On-Stuff. j pole antenna 2m 70cm Connect the center conductor of the coax to the main element, and the shield to the tuning stub of the j-pole. 15 dB gain on 2 Meters (« wave) and 3. This antenna can be supported by many things2m Projects - Omnidirectional Antennas "Limpy Arnold" Here is a 2 meter (146 Mhz) J-Pole antenna that is inexpensive, and easy to build. VHF Omni. Band Channael - $3. Here is a nice small home base antenna for 6m/4m/2m and 70cms, also it would be ideal for portable work: Quad band 6m/4m/2m/ and 70cm colinear only 1. I have it on a large J-pole 70cm. 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, are more efficient and zero maintenance! Put one up and use it for many years. This is necessary because feeding a half- How To Build 2m 70cm Vertical Antenna. No damage at all, and it kept right on ticking. The vertical portion of the antenna is made of #12 copper wire soldered directly to the center pin of the SO-239 connector. J-pole broadcast fm 89mhz. The original Ed Fong Dual Band VHF/UHF 70cm/2m J-Pole PVC Pipe Antenna : Eye-On-Stuff In this video I show you the original Ed Fong J-Pole PVC Pipe antenna. important because if the mast extends above the antenna ground plane it will affect the performance of the antenna. Ed is the inventor of this antenna. Works great. Model # Band Stacked Element Phasing/ Wavelength Gain/dB Watts Connector Type Weight Lbs. Even a difference of 5' or 10' can make a big I was asked if the Slovakian man who made antennas made a J-Pole for the 2m/70cm band that could be used maybe on PMR 446 MHz. Home Links My Slim Jim's My Gear How to's Files E-Mail: Check out the New!Flag mast mount Handmade Slim Jim Antenna's by N9TAX Let me start by saying that since discovering the slim jim antenna design I have really come to respect these antennas. The DBJ-1: A J-Pole for 2-meters and 70-cm. 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. 440 Super J-Pole Antenna by KA0NAN, April 1996. It is an outstanding performer, especially when you get it up in the air. $14. 8-9. Use with Baofeng, Wouxun, TYT, Yaesu++ See Description. Just enter the operating frequency and calculate the dimensions of your J Pole Antenna. Slim JIM 145mhz, F1RFM. I've been producing these antennas professionally for nearly a decade now and have sold over 15000 units. Construction Plans for the Arrow Model J146/440. It is cheap and easy to build, sturdy, very easy to tune up, and performs quite well. "J " antenna is the fundamental correct designation. Manufacturer Tram Product Description 2M/70cm 5/8 Wave Antenna Frequency (MHz) 144-148 & 440-450 Product Narrative Base loaded Dual Band High gain antenna Usable Bandwidth 4/10 MHz Gain (dB) 3/6 10m/2m/440 10m, 2m and 440 MHz Antenna: 20m/2m/440 20m, 2m and 440 MHz Antenna: Cushcraft: Beam Antenna Chart & Index: Vertical Antenna Chart & Index: Diamond: A144-S5 Yagi Beam 2m: A502HB Yagi Beam 6m: BB7V Vertical HF: F 22A Vertical 2m: F 23H Vertical 2m: F718A Vertical 70cm: V2000A Vertical 6m/2m/70cm: X 30A Vertical 2m/70cm: X 50A Vertical Wireman-J-Pole Pagina 1 The picture shows the scheme of a J-Pole antenna. My first antenna is in my attic and gets great signal reports from my 4 W HT to repeater, other mobiles, and base stations. J-Pole Antenna. J Pole Antenna for 2 Meters: This is a quick video of a simple J Pole antenna build for 2 meters. This forum is for all my fellow radio enthusiasts, or up and coming radio operators to seek or give advice. Purchased a 6-160 Meter J-Pole 34 foot antenna rated at 750 Watts (JPoleSr) from Alpha Antennas for $150 with shipping. At 2 meter frequencies the wave doesn't see the traps and acts as a regular slim jim antenna. In my opinion, this is the best performing and most affordable base station antenna you can get for Ham Radio. 2 Meter Slim Jim Antenna Using 300 Ohm Twinlead - Essentially the same as above, but with a bit of a twist to improve performance. (Step-by-step instructions with photos can be seen below, following the project description and safety disclaimer. 5 dB gain on 440 MHz. The J-Pole is good antenna Dual band 3 Elements x 5 Elements 2m VHF / 70cm UHF Yagi Antenna (Lightweight End Mount) Original Handcrafted / Quality Build (Antenna data Generated with 4NEC2) 2 Bit J-pole project Dave Prince WB0RAZ. Here’s Episode 26, which answers the question, “how does a J-pole work?” There are times when you may need more gain than the standard J-Pole antenna. Approximate cost: Dec 17, 2008 440 from a 2m Antenna? Many makers of J-poles for 2 meters claim they can also be used at 70 cm. NET. I bought a 2m J-Pole one year ago & had fantastic results from it. I bought a 2m J-Pole one year ago & had fantastic results from it. dual band 2m-70cm j-pole antenna - $15 (Rhinelander) great condition , works great Last Updated on: January 6, 2019 with Diamond 2m-70cm mobile antenna - $45 (Rhinelander) Report Ad . Details HAM Multiband. There is a page on building HF J-Poles using 450 ohm balanced feed line. a J-pole built for 2 meters is close enough to work well on 70cm. Home. 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. This is how to build a J-Pole antenna for 2M/70CM ham radio bands. E. 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. Plus the antenna also… Copper Dual-Band Super J-Pole Antenna by KA0NAN, April 1993. hamradio. com/videosClick to view on YouTube11:50Dual Band J Pole 2M-70cmYouTube · 4/21/2014 · 46K viewsClick to view on YouTube3:30The original Ed Fong Dual Band VHF/UHF 70cm/2m J-Pole PVC Pipe Antenna : Eye-On-StuffYouTube · 3/26/2015 · 191K viewsClick to view on YouTube1:22Arrow open stub J-POLE antenna 2m/70cm cut down to Murs/GMRS per Arrows' 152/462 antenna overviewYouTube · 2/12/2017 · 1. SLIM JIM ANTENNA PROJECT Several designs rolled into one Edited and condensed from various designs Page updated with new information and videosAbout SWR; My OSJ 146/440 J-Pole went through 3 hurricanes in 6 weeks, with gusts speeds, on occasion, as high as 153 MPH. 8 pF and it would be perfectly matched to 50Ω. You have to use odd number of 1/4 wavelengths to use this method. 99. Oct 07, 2018 · Attached images antenna installed in the attic et gp 3 2 440 vertical yagi for 2 meter ssb 2m 70cm yagi design dk7zb 16 attic antenna 2 Meter Bobtail Beam … Skip to content. Vertical Dipole Portable Base Mobile Alpha Magnetic Loop antennas Building A 2-meter J-Pole Antenna "I have used these and by far, the best ones are made from twin lead TV wire that can be suspended high up on any support. I was prowling around looking for 2M j-pole information a while back and happened onto your slim-jim calculator. Type Authentic N9tax Vhfuhf Slim Jim J-pole Dual Band 2m 70cm Antenna Jpole. 00 Buy It Now 12d 10h. Buy It Now. 4Ghz Yagi Antenna for Wifi; 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 This is a simple and quick design for a collinear antenna. AUTHENTIC N9TAX VHF/UHF Slim Jim J-Pole For HT 2m 70cm Antenna 16' Coax - $28. They look pretty weird, as can be seen in the following photo: The picture to the right is of a 2m amateur radio band J-pole I built from an EZNEC simulation. J-Pole antennas for the 2m and 70 cm (VHF/UHF) Amateur Radio bands come in many sizes, ranging from commercial models based on public service designs to homebrewed configurations using coaxial cable, 450 ohm ladder line, or even TV twin lead. 4inch. See Details. The tall part of the J is the half-wave vertical dipole plus an approximately quarter-wave matching section, and the short part is the nearly quarter-wave matching stub. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! VHF ¼ wave mobile VHF rubber duck Standard VHF J-Pole Dual Band J-Pole -24. 386 watching NOTE: THIS ANTENNA WAS DISIGNED BY ARROW ANTENNAS AND IT WORKS GREAT. The "J pole " was a flag plole with several "J" antennas on different bands, written in QST several years ago. Thick aluminum base plate. co. These agree well with the real j-pole and 2BCX antennas measured in a real antenna test chamber in figure 2. J-pole 144Mhz, I5BHN. In the past I successfully built J-poles for 2m, 10m, 15m and 17m. It has weathered six or seven Maine winters. After tuning the antenna was installed in its permanent location above the T. Dual Band “J” Pole Antenna for 2m & 70cm 2m ¼ wave section 70cm ¼ wave section Driven Element Inner Conductor connected Driven Element . Quick view. SLIM JIM ANTENNA PROJECT Several designs rolled into one Edited and condensed from various designs Page updated with new information and videosAUTHENTIC N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole - $23. 27. 3/4 λ VHF antennas for base station service made of hi-quality materials to get the maximum efficiency and the best performance. Dual Band 144/432MHz J-Pole Antenna - Colin G4FCN After the construction night in January (2016) several members showed an interest in this antenna. Plus the antenna also… Our UHF Slim Jim Antenna delivers up to 6dbi of gain on the 440 – 470 Mhz UHF bands, which is almost twice the gain of a J-Pole and 5 times the gain of a 1/4 wave ground-plane antenna. About Us Services M embership Application Calendar M eetings & Special Events Repeaters 2m/70cm Dual Band J-Pole by KK4ICE If you have any questions about this project, contact KK4ICE. 1992. | eBay! 2 Meter 70cm Dual Band J Pole Antenna 144/ 440 Mhz Ham Radio With Weather Boot. 85. Additionally, a metal support is often connected to the J-pole antenna, adding a third variable. UHF/VHF 2M thru 70cm. Jetstream JT524SMA 2m/70cm Dual Band Antenna - OUT OF STOCK. Figure 3: 2m dipole or J-pole (free-space) vertical radiation . Use a 54” piece of 450 ohm Ladder line. Was outside on my balcony all summer. or the 2m/ 70 cm Vertical Dipole Antenna. SMA-Male Magnetic Indoor Antenna HYS MS801 Dual Band VHF/UHF 2M/70CM Magnet Antenna with 14Ft RG-174 Cable for Two Way Ham Radio VX-7R UV-3R UV-985 Baofeng Puxing TYT Walkie Talkie • If the antenna is to be placed outside, do not use brass. VHF UHF Jpole - related links We thought you might be interested also in these additional resources, currently listed under our Antennas/J-Pole category:. In about an hours time, and about $10 worth of materials, you can have a great performing omnidirectional j-pole antenna. Enables the antenna to maintain the same strength as one with one piece structure. 45 GHz. Alternatively, for permanent installations, the copper tube or aluminium J-pole is a good choice. Contact Poster by Email Email Poster. We found that the dimensions which tuned up properly in this collinear configuration were somewhat longer than the standard J-Pole dimensions found in the ARRL Handbook, ARRL Antenna Book, and around the web. Antenna for 2m & 70cm 2m ¼ wave section 70cm ¼ wave section Driven Element Inner Conductor connected Driven Element . | eBay! This antenna has a SWR of 1. Our flagship model, The Two Meter J-Pole Antenna comes in two different . End-Fed Longwire Antenna for 160 - 10 meters with 9:1 Balun Ground Plane Antenna Plans for 144, 220 and 440 MHz 2m / 70cm Dual Band Open Stub J-Pole 220 MHz Open Stub J-Pole MURS & GMRS Open Stub J-pole Loop Skywire HF Antenna Moxon Antennas The Doublet HF Antenna 160m Inverted L Antenna 6m/2m/70cm Yagi Antenna Built from Old TV Antenna This turned out to be a great little antenna. In essence the J-pole is a halve wave radiator with a quarter wave matching stub underneath the antenna. They may even have a low SWR on 70 cm, though their high angle of radiation makes them poor performers. A single antenna can cover the entire amateur 2m/70cm allocation with more than acceptable SWR. If you stack two 50 ohm antennas you can match them by transforming the 50 ohms at the antenna to 100 ohms at the coax feed point (2 - 100 ohms in parallel gives 50 ohms at the feed point). Now to be honest I use what I believe to work the best for what this antenna is designed to be all the way around. 2m in length. Would like to sell for $25. Originally $40. Characteristics of the EA270J Antennas with a gain of 6 dBi both VHF and UHF. Penulis. Since I like making things, a homebrew antenna was in order. I hope you found everything you were looking Your source for the excellent and highly-portable ladder-line j-pole antennas for 6m, 2m, 1. You can use 1/2 inch to 1 inch pipe (wall thickness will affect stiffness/stability AND price, but not performance). I’m trying to build a 146MHz j-pole and I saw the 70cm antenna you had on the last picture and nownI am really Intro: J Pole Antenna for 2 Meters This is a quick video of a simple J Pole antenna build for 2 meters. The SIMPLE 2m/440 Copper pipe "J" 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! by Dale “Kuby” Kubichek, N6JSX Authentic N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole $10. The traps isolate the bottom of the antenna at high frequencies to allow dual band use. - Forum. I have an Icom IC-7000 and the output for 2m & 70cm is via a single output connection. (2) 2m/70cm directional antenna, (2) 2m/70cm J-Pole antenna's, (1) Magnetic ham antenna for vehicle, (3) field phones new in box, (1) 40 channel CB base station, Wooden field stand, (6+) coils of RG 8X and LMR 400 coaxial cable, Roof mounted antenna rotor with controller, 40 channel CB The Slim-Jim is velcro-tied to the pole at around 2/3 up and used with my FT-60 handheld for local QSOs on 2m/70cm. j pole antenna 2m 70cmMar 25, 2015 In this video I show you the original Ed Fong J-Pole PVC Pipe antenna. com/osj/j-J-Pole Antenna Calculator. 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. Solder a PL-259 on the bottom of the Ladder Line (both side of the ladder line will solder on the ground side of the PL-259 - this is used for the shorted part of the J-Pole). Untuk antena J-Pole 2 meter band. 51" roll-up J-pole for 440MHz is like MFJ-1730, but shorter. 2 meter JPOLE Antenna The J-Pole antenna is fundamentally an end-fed 1/2-wavelength antenna that uses a 1/4-wavelength long transformer section to supply the feed voltage. 5/8 wave stacked J-pole. I use 3/4 inch copper pipe, and the associated fittings necessary. J-pole 144-146 Mhz, I0FPP. Im handy cap, or I would build it my self. eBay Authentic N9TAX VHF/UHF Slim Jim J-Pole For HT 2m 70cm Antenna 10' Coax. Building 440mhz 70cm FRS J Pole Copper Antenna. Building the Antenna I like the copper J-pole, so I started a design using that antenna as a model. The J-Pole is an older antenna design that’s been around a while, but not widely used or thought of these days. 6dB colinear VHF antenna - Building details of a VHF colinear antenna with 6 db gain; 5/8 Collinear antenna - A 5/8 wave stacked j-pole& Well, I still have not checked my antenna (2M) with an analyzer as of yet, but I have built another one. Apr 19, 2016 · A collinear J-pole will match 1 to 1 across the band, and give you about 9db of omni-directional gain for about $25. About the J-Pole. It is especially good for cross-band repeaters, APRS stations, or for rag chewing on SSB on the lower band portions of the band or on the local repeaters. This antenna is also known as the “copper cactus” (because it kind of looks like one of course!). ch/2m-70cm%20antennas. Shown is empirical evidence why this is a problem and a very simple solution all future grounded j-pole antennas should incorporate. It is fed with 45 ft of LMR400. 90 - Double-Delta Antenna 80m and 40m. Same dimensions and specs as the original J-Pole but with a screw connector in the middle for easy transport and storage. It can produce similar results to a commercial version and be made from scraps of coax. White fibreglass tri-band base antenna for 2m, 70cm and 6m. The J-pole you have, as are all J-poles that I've seen so far, is an end fed half wave on 2m. 386 watching 2m/70cm Dual Band J-Pole by KK4ICE This is an excellent performing J-Pole type antenna, constructed from readily available materials. Top Suggestions de70cm Antenna. This is my NEWEST deluxe model roll up Slim Jim/J-Pole antenna with 10' of coax! WHOLE ANTENNA IS 3 OUNCES and made to fit your rig! Authentic N9tax Vhfuhf Slim Jim J-pole For Ht 2m 70cm Antenna 16' Coax. $25. EE-3Y HAM RADIO ANTENNA. SWR 1. A synthesizer-controlled 70cm-transceiver for 9600bd packet radio by DF2FQ (TX)Until today, more than 10 years after the publication of the G3RUH-modem, there exists not a single radio from the large amateur radio manufactures, which is suitable for operation at 9600 bit per second with a sufficiently good quality. 0. It may not be intuitive at first, but the 2 Meter 70cm Dual Band J Pole Antenna 144/ 440 Mhz Ham Radio With 2m-70cm Antennas Ham Radio Antenna, Summary, Boombox, Radios, Larry,. Super J J-Pole Antennas. Authentic N9TAX VHF/UHF Slim Jim J-Pole For HT 2m 70cm Antenna 10' Coax. 97. Hal 1 dari 7 halaman. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take… 220 MHz Quickie Quarter Wave Antenna -- From Artsci 220 MHz J Pole Antenna-- From N6ZAV Super J-Pole Antenna (Collinear Design) - By KB0YKI 440 MHZ Antennas / Cheap Yagi Antennas for VHF/UHF-- From Kent WA5VJB Coaxial Collinear Antenna-- 432 MHz -- From Via N9ZIA Small 70cm Yagi-- From The ARRL 2m & 70cm dual J-Pole : Version 2: This antenna is the "bee's knees" for a single connection dual antenna for both the 2 metre and 70cm band. Dual Band Base Station VHF/UHF J- Pole HAM Antenna Review. 55cm-70cm Lolita Cute Long Wavy Ombre Bangs Japan Harajuku Party Cosplay Wig+cap Nov 30, 2017 · I suppose I could get away with a homemade J-Pole in the attic. At this point it’s pretty crystal clear Fred Judd’s 2BCX Slim Jim antenna doesn’t offer anything special compared to a traditional J-pole antenna. There are times when you may need more gain than the standard J-Pole antenna. Relatively low SWR should be observed at this point. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take… If you need a simple, strong and efficient atenna for 145 mhz, you need a J-pole; I think it's the best antenna for newcomers because it has better performance than a GP and is easy to bulid; moreover it's electrically gronded. Designed primarily as a 2 meter/ 70 cm dual band antenna, the SE-DBj also makes for a great scanner antenna for 28 Mc. Diamond X-50 2m & 70cm Base Antenna - $50 (Ravenswood) I have a used but in good condition Diamond X-50 antenna PL-259 So-259, it works great and has been for a few years never gave me any problems SWR is low across both bands. $24. . , San Isidro, Maharlika Highway Sep 17, 2015 · A Super J-Pole Antenna for the 70Mhz (4m) Amateur band. $23. There are many instructions on the web for building your own. First, it is a very effective broadband two-meter j-pole , ready to work beautifully anywhere in the band and beyond. My father has run one using 100w on 2m with no problems. It is completely manufactured with aluminium tubes and nylon for its great robustness and it is supplied with a solid steel bracket for an easy and safe installation everywhere. 70cm J-POLE ROLL UP ANTENNA with BNC CONNECTOR. 6m/2m/70cm Yagi Antenna (Part 1/9) Built from Old TV Antenna How to build a ham radio tri-band 6 meter, 2 meter & 70 cm yagi beam antenna using an old TV antenna for parts. I think a mobile rig is a better idea, because they have decent power, and I could probably bring it inside with a DC power supply if I decided to put a J Pole in the attic. This antenna can be supported by many things ARROW ANTENNA OSJ-146/440 Dual Band 2 Meter / 440 MHz J-Pole Vertical Antenna Antena J Pole 2m 70cm - Download as PDF File (. there was a simple way to convert a 2 meter J-pole into a dual band J-pole DBJ-2 was developed from the successful performance of the DBJ-1 but folks requested a portable version. And you'll have a dual bander. My main shack location has a commercial 2M J-Pole Dual band mounted on a short mast. (can not obtain good VSWR on 440 but the 2m gain is outstanding – about 6dbd worth!) EXPERIMENT, create you own unique designs the “J” is a very forgiving, yet, Details HAM Multiband. $27. Retevis Rt95 - $109. J-Pole and Slim-Jiim . 86 - Fan-Dipole Antenna for 80m, 40m, 20m. OSJ 146/440. The bottom of the antenna is up about 20 feet from the ground. HRO Discount Price: $58. Top-left: frontal view, top-right: side view, bottom: holder. 6 meter J Pole antenna. Horizontal radiation is on the left, vertical on the right. The double part of the antenna (the bottom 19 inches) is a transmission line stub used to transform the very high impedance at the base of the 1/2 wave antenna to something closer to 50 ohms. this is the best dual band j-pole ever built 2m - 70cm direct connection beam dimenisions Very pleased with the J-Pole I received, quality built, very well packed, fast shipment, reasonably priced, performs in an outstanding manner with incredibly low SWR. Gamma Match for 3 Elements Yagi 70cm UHF; 5 Elements Yagi UHF (Panda Antenna Build) Gamma Match for 5 Elements Yagi UHF; 15 Elements 2. while I really like this antenna, the 1/4 ground plane is a more simple antenna to build your first time and also more forgiving. Advantages of a It is a standard VHF j-pole that resonates at UHF (all antennas do that). The J-Pole also matches the high impedance at the end of a ½ wave radiator A Slim Jim for 2m (145MHz) will be 1. 5/5(1)Location: Murfreesboro, TennesseeSeller Rating: 100. The J-pole antenna is a mechanical 3/4 wave vertical antenna. We will order it for you. ch/2m-70cm%20antennas. Its worth mentioning that a 2m j-pole will also resonate on 440, just won't be as efficient (the take-off angle is higher, so you won't have as much range). The Breakaway 2 meter J-Pole is the same antenna as the original model but with a two piece design. The Watson base station antennas have earned themselves an enviable reputation, offering both value for money and excellent performance. A Simple 2 m/70 cm Vertical Dipole Antenna by KGØZZI purchased this J-pole Antenna and decided to mount the antenna on a pole outside my house. 1”=2. 5-7. Unlike a vertical dipole, which because of its center feed is usually mounted alongside a tower or some The 2m/440 Super J-Pole . 47 dB Table I Measured relative performance of the dual band antenna at 146MHz. ham-radio. Parts Needed. In this video I show you the original Ed Fong J-Pole PVC Pipe antenna. This antenna can be supported by many thingsVHF Omni. How To Build and Tune a Roll-Up 2M J-Pole - 'nuff said. Arrow Antenna OSJ-146/440 Dual Band J-Pole. We do not normally stock it. 1” enhances the 70cm band performance {63. Scribd is the world's largest social reading and publishing site. My Diamond X510NA 2M/70CM Antenna Last week I managed to get a Diamond X510NA antenna for free! The only issue was that I had to go and retrieve the antenna off the roof and also remove another antenna which I also got to keep. The J-Pole also matches the high impedance at the end of a ½ wave radiator This easy to build dual band VHF/UHF antenna makes a great project for the new ham that is ready to get on the 2 meter and 70 centimeter amateur radio bands. Dual Band - 2 Meters & 70 cm - Solid Aluminum - End Fed (SO239 Connector Only). Individual shipping of the 5 ft antenna is $10 so we rather you go to Lowe’s (stock # 23990) or Orchard Supply (stock # 648-5908) and buy the PVC pipe for about $1. . Save 2 70cm antenna to get email alerts SMA-F Dual Band 2M/70CM Car Truck Mobile Radio Antenna 20W UP 2M/70CM ROLL UP ANTENNA WITH 10FT COAX J-POLE/SLIM-JIM Hi there I like to build a Homebrew 2m, 70cm mobile antenna with a BNC plug to put onto a magnetic base that has the BNC ready for it. Articles. 99 : Thank you for visiting today. Since my rotor snapped and my 2m quad fell with it I needed a simple temporary antenna I made a couple of plumber's delight J-poles see here: My homebrew 2-meter j-pole (made from 450-ohm ladderline) is also resonant on its 3rd harmonic, 70cm, and has reasonably low swr on both bands. Simplified 2 Meter J-Pole (pdf) Michael Martens KB9VBR. The most popular antenna for homebrewing is the 2 meter J-pole. 95. 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 220 Super J-Pole Antenna by KA0NAN, May 1996. The J-Pole antenna, more properly known as the J antenna [6], is one of the most popular antennas for 2m vertical use in the amateur radio ranks. 2m and 70cm FlowerPot Antenna Note size of tube and turns on choke altered to uk tube size Someone asked me how much power the Flowerpot will take. This is a special order item. A simple design using dipole driven elements. Visit. Slim jim antenna project. I ended up building one for 2M and experienced a few ‘issues’ tuning the antenna to minimum SWR and such. "Buck" Rogers, Sr (K4ABT) for this ultra simple, easy to understand J Pole Antenna Calculator for HF, VHF, and UHF amateur radio bands. These agree well with the real j-pole and 2BCX antennas measured in a real antenna test chamber in figure 2. THIS IS THE BEST DUAL BAND J-POLE EVER BUILT Authentic N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole. I recently made a "deseret j-pole" dual band antenna for basic 2m and 70cm transmitting and receiving use. 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. Introduction. You can use one common feedpoint or two seperate feedpoints depending on how you would like to connect this antenna to your transceiver. 31. A capacitor of 0. Discover (and save!) your own Pins on Pinterest. permits the antenna to achieve high performance, high power rat-ing low vswr, and broader band coverage on both 2m and 70cm bands. - Temporarily installed on a 2m fibreglass pole for testing. Operation on both 2M and 70cm appeared to be satisfactory. Use with various radios. This item is currently out of stock. 220 MHz not only has repeaters but has become a Hal 1 dari 7 halaman. For use in the car, a simple dual-band mag mount would fit the bill. Frequency [MHz] Wavelength [mm] Distance A [mm] Distance A [inch] Distance B [mm] Distance B [inch] Distance C [mm] Distance C [inch] Distance D [mm] Distance D [inch] Rod Diameter [mm] Rod Diameter [inch] Notes • If the antenna …The antenna costs almost nothing to construct and should handle up to 50 Watts of power. To Achieve this dimension, I use a 1/2″ pipe Tee, and a “Steet Elbow”. T100+ Antenna Analyser and Laptop used for tuning. This project learned me that the J-pole is a very nice antenna for the 70cm band. 1K viewsSee more videos of j pole antenna 2m 70cmTrue Dual Band 2M/70CM Stainless Steel J-pole Antenna | eBaywww. 2, 442/1. Dual band 2m 70cm Slim Jim Antenna with 16' or 10' rg-58: $22. 3 Elements Yagi 70cm UHF Compact Antenna. 91 - Inductance-Loaded Shortened Dipole for 160m J-Pole Base Antenna 2 meter 70cm Dual Band Heavy Duty Amateur Ham Radio Scanner. KB9HGI Cactus Dual band J-pole Dual band Cactus j-pole This is a very easy and simple 2 meter/70cm vertical antenna. Find great deals on eBay for j pole antenna. 2m/70cm Dual Band J-Pole by KK4ICE . The 2m only J-Pole is not ideal for 70cm. In my opinion, this is the best  Arrow Antennas JPole 2m 70cm Dual Band Repeater FM www. Thanks to G. For instance, the J-Pole antenna design for 2m/440 ops is a very popular homebrew project, and it can be created with simple aluminum from the hardware store or even from segments of twin lead feed line. The Arrow 2m/70cm J-pole is not a "performance enhancing" antenna. 25m (Mid stub) - 2m (Bottom stub) DELUXE MODEL ROLL Up 2M/70Cm Roll Up J-Pole/slim Jim Antenna With 10Ft Coax - $33. 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. html for use with copper pipe and a Di-electric insulAuthor: Greg LiebigViews: 47KVideos of j pole antenna 2m 70cm bing. ham-radio. 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. 076 Brgy. Dual Band (2 Meter/70 cm) Solid Aluminum J-Pole. Hal 7 dari 7 halaman Rekan-Rekan juga bisa membuat antena JPole 70 Cm Band dengan Twin Lead TV dengan cara yang serupa dengan membuat antena J I recently made a "deseret j-pole" dual band antenna for basic 2m and 70cm transmitting and receiving use. pdf Free Download Here Simple J-pole antenna - Welcome to the Dallas Amateur Radio Club A 'J'-pole is a vertical 1/2 wave antenna fed by means of a sort of odd shaped 1/4 wave section. But this design yields excellent results compared to many other dual band antennas. The whole cost was under $20 and alot of fun to do. Just finished this Dual Band J-Pole Antenna. I have a new dual band 2M/70cm J-pole that I have just installed on my roof. The W8JK is a famous and effective DX Antenna. Wideband Discone. The J-Pole antenna is a common omni directional antenna used in amateur radio, particularly on the VHF and UHF bands. In my opinion, this is the best performing and most a Could you build me a two meter ham j-pole. The J-Pole pattern resembles that of an ideal vertical dipole because of its minimal interaction with the feed line. This is how to build a J-Pole antenna for 2M/70CM ham radio bands. 8, 450/2. By ON4CFC Via Antennex Super J-Pole Antenna (Collinear Design) - By KB0YKI VHF/UHF Antennas-- By KB0YKI -- J-Poles, Super J-Pole, Omnidirectional, Quads, Yagis VHF EggBeater Antenna - From ON6WG / F5VIF Quick and Simple 2 Meter Ground Plane Project Via HamUniverse 2M Yagis. The antenna acts like a slim jim on 2m and a jpole on 70cm. 8. 9:1 thoughtout the band. A J-pole is a good antenna, is pretty much omnidirectional. Diamond X-700HNA 2M/70cm 24' Vertical Base Antenna CP-5HS DIAMOND CP-5HS 7 / 14 / 21 / 28 / 50 MHz Trap Vertical Antenna 40 / 20 / 15 / 10 / 6 Meters 11. ARROW ANTENNA OSJ-146/440-2 Dual Band 2 Meter / 440 MHz J-Pole Vertical Antenna 2 Piece Elements. 1995. Vhf Uhf Slim Jim J Pole 2 Meter 440 Antenna -16 Feet Coax With Ferrite Rf Choke. Here is a zoom of the feed point in a correct model of a bottom-fed J-pole. Contact Us. V. Schematics for AWX antenna for 2m and 70cm bands. 34 dB -23. Easy to make. UHF Beam Antenna, Vertical Bazooka Antenna, HF Vertical Ham Antennas, 2 Meter Antenna, 70cm Antenna Analyzer, 2M Antenna, Yagi Antenna, J-Pole Antenna 70Cm 2M, Homemade UHF Antenna, Yagi Antenna Design, 6M Antenna, Dual Band J-Pole Antenna, J-Pole Antenna HF, 2 Meter J-Pole Antenna, 40M AntennaJan 06, 2019 · I have an older model 2 meter/ 70cm ham radio for sale. The original idea came from the Arrow Antenna open stub J-Pole which is made and sold by Allen Lowe (NoIMW) for $39. - SWR 2m Band. http://www. First, it is a very effective broadband two-meter j-pole, ready to work beautifully anywhere in the band and beyond. I was looking for something that was vertical, omnidirectional and with good gain that I could make quickly and easily. txt) or read online. See Description. THIS IS THE BEST DUAL BAND J-POLE EVER BUILT 2m/70cm Dual Band J-Pole by KK4ICE This is an excellent performing J-Pole type antenna, constructed from readily available materials. It is an ideal end-mounted, single-mast antenna. Maybe not the smartest thing I did, but my first HF bands antenna choice is an all-band end-fed J-pole. mehttps://www. S11 of our 'photo-model', designed for 2. Approximate cost: Q: I built the dual-band J-pole antenna from the article in the September 1994 New Ham VHF/UHF Antenna,” page 61), but I just can't get it to work. This antenna was designed for FEMA and is ideal both as a base antenna as well as an emergency antenna. I built a copy of the Arrow OSJ and it was great on both. It works for 2m and 70cm. If you want something with good value and performance, try a Diamond X-200A. 87 - Capacity Tuned Folded Loop Antenna for 20m. The antenna is easy to build, rugged, quite compact, and can readily be hung from a tree. 68. Penulis akan mengajak Rekan-Rekan untuk membuat antenna Super J-Pole yang masih merupakan keluarga antenna J-Pole. 6m/2m/70cm Yagi Antenna Built from Old TV Antenna by KGØZZ This turned out to be a great little antenna. VHF ¼ wave mobile VHF rubber duck Standard VHF J-Pole Dual Band J-Pole -24. Author use 1/2 inch copper pipe, and the associated fittings necessary. RE: The SIMPLE 2m Copper 'J' Antenna : by W4SDL on September 26, 2001 Mail this to a friend! "J Pole " is incorrect. Authentic Kb9vbr - $33. this is the best dual band j-pole ever built 2m - 70cm direct connection beam dimenisionsVery pleased with the J-Pole I received, quality built, very well packed, fast shipment, reasonably priced, performs in an outstanding manner with incredibly low SWR. 84 - Mini-Horse Yagi Antenna. Supplied with antenna, radials, mast supports etc 2m/70cm «wave MOBILE 3/8-24thd. 0db at 145mhz. The Twinlead J-Pole - The basic of the basics, a simple 2M antenna. Scanner Antenna: This is a simple but sensitive Home Made J-Pole Antenna that works great when You are limited as to a place to mount an external antenna !What You Will need: 48 " twin lead Measuring Exacto knife or similar cutting elec. Many commercial HF antennas use this technique to achieve good patterns on their multi-band antennas. So it appears it could be, below is the photo and the link to where the antenna can be purchased on line: It comes with everything you need for rapid deployment. FAQ's. I can give Blackbird J-Pole a solid two thumbs up. NET. Authentic N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole. Just don't need it anymore. Building the J-Pole antenna (PVC covered) KA1FSB. uk 01922 414796, for all your radio needs. - SWR 70cm Band. The antenna I constructed was made of 1/2" tubing. If you're looking for a Go Bag antenna or antenna for field day, this is one you should definitely consider. True Dual Band 2m70cm Stainless Steel J-pole Antenna. The high The 2m-J-Pole can be used on 70cm, too with an SWR <1,6. The SWR will be much lower once the antenna is mounted in the air. Seen as a half-wave 2m antenna, the not stripped piece of cable in the middle that is not removed, dit not really count. If you decide to make a 2m antenna, you’ll end up with 1. 13:1 at 440MHz and below 1. is a mobile setup a valid compromise? I just want to hit some 2M/70CM nets, and I can't Sperrtof 2M Antenna-- aka Sleeve Dipole or Sleeve J-Pole. Model #. How to build a 2 meter J-Pole T-cars virtual Elmer (swr adjustable clamps) 2 Meter J Pole Beam Jagi Tri-County Amateur Radio Club. 5, 148/1. Just do a net search for 2-meter j-poles. 71. It's a 3/8 x 24 Stud-Mount Dual Band Whip with 2. 0 db, 10ft. As a fixed base station antenna, you should be able to get many maintenance free years of service. The antenna is broad-banded and should therefore provide a low SWR across the entire 2-meter band. 0 results for Dual band 2m 70cm Slim Jim Antenna Save Dual band 2m 70cm Slim Jim Antenna to get e-mail alerts and updates on your eBay Feed. Band Channael Rotary Switch 2p11t 2 Pole 11 Position Dual Deck J5m9. 23; Buy It Now +C $6. My SWR readings taken with a antenna analyzer are (Mhz/SWR) 145/1. 2 meter 70 Cm Home brew antenna Your going to like this Copper Cactus J-pole , This home brew j-pole is easy to build and sturdy, While looking for an antenna project to build I remembered seeing a Marine antenna called the Super J-Pole in the which had6 db gain over a quarter wave ground plane. Bob k5qwg The following is a description of a J-Pole antenna made from copper pipe. Roger Hickerson. Simple j-pole antenna for 2 meter - how to build a J-pole antenna for 2 meter band with many photos ecc. 89 - Indoor Loop Antenna for 80m. In my experimentation with the basic J dimensions it was found a long element length of 63. Całkowity koszt anteny 10zł. Get great deals on eBay! Skip to main content. C $35. The CB Radio Talk Forum. My First Homebrew Scanner Antenna. Need Help With 2 Meter J Pole Antenna Placement …May 11, 2018 · Pryme Al-800 Antenna My latest antenna the al-800 made by pryme, a 94cm long telescopic with a 3. Operates without radials. The Fabulous Moxon Antenna, Part 1. Slim N9tax Vhfuhf Authentic 2m J-pole 70cm Antenna Jpole Dual Band Jim Band 70cm Dual Antenna Slim Vhfuhf J-pole Jim Jpole Authentic 2m N9tax $23. Notice the model includes the coaxial feed line and/or mast attached to the "grounded point" of the J-pole. " -Ed Fong’s CLASSIC j-pole construction articles (NOT high-gain antennas by any means but EVERY ham working 2 meters and 70cm should enjoy building and using a j-pole!): DBJ1 DBJ2-AMSAT-UK published my tutorial in their March, 2015 issue of their AMSAT-UK OSCAR NEWS magazine. Dual Band Nmo Antenna Black Motorola Style 2 Meter Mtr 70cm 144 440 Mhz Vhf Uhf. Description. Build A 2M Yagi for Emergencies (and Fun!). $49. Search Search. Explore Collections on eBay 2+3 element 2m (145 MHz) and 70cm (435MHz) duoband ultra portable yagi’ by ok1cdj. Homemade 2M/440 J-Pole Antenna - A 2m 70cm Dual Band J-Pole antenna for 35 USD. What can I Mar 25, 2015Apr 20, 2014J-Poles: (OSJ = Open Stub J-Pole). 5 dB -23. Install 70cm stubs on the 2m antenna to create a good UHF radiation pattern. J-Pole antenna covers 219 to 225 Mc. The ring gasket makes the antenna water-proof, and Details HAM Multiband. The N9TAX Slim Jim antenna is the highest quality roll up antenna available today. com › … › Antennas › Ham, Amateur Radio AntennasBut instead of simply trying to load a two-meter jpole on 70 centimeters and proclaiming it to be a "dual bander ", the B-Square dual-band j pole is a true two-band antenna. A portable 2-element VHF yagi May, 1997 Here's a simple Saturday project: build a portable VHF yagi antenna for 2 meters. This sketch shows a semi-exploded view of the antenna. eabyAuc dual 16 Connector Options The SMA Male is the default connector. If it can double and do duty as a 70CM, then all the better. There are times when you may need more gain than the standard J-Pole antenna. What can I Dec 17, 2008 440 from a 2m Antenna? Many makers of J-poles for 2 meters claim they can also be used at 70 cm. 2 meter Loop Antenna. antenna. Vhf Uhf - $27. October 7, 2018. ebay. html for use with copper pipe and a Di-electric insul The J-Pole antenna is a 1/2 wave antenna with a 1/4 wave matching stub. to 900 Mc. I have had good success with both, but regularly use the balanced feeder Slim Jim mounted on a 9m fibreglass pole, as can be seen in the photo at the bottom 1. ) This is an excellent performing J-Pole type antenna, constructed from readily available materials. Comes in 2 sections for easier transport. 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. PCS What is a good antenna design to DIY a backpack antenna for 2M? I want two different types. The performance of this J-Pole is, theo-retically at least, equal to a ¼ wave radia-tor over an ideal ground. htmlJ-Poles: (OSJ = Open Stub J-Pole). The design is simple and uses dipole driven elements. This will de-couple the feedline from the j-pole antenna, and help provide some lightning protection. After completing the basic assembly of the collinear antenna, apply a small amount of RF with the antenna on the floor or ground. 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. A work of art. Use with Baofeng, Wouxun, TYT, Yaesu++ See Description Dual band 2M/70CM J-Pole Antenna Hal 1 dari 7 halaman. Whenever you stack antennas the impedance will change (two 50 ohms antennas will give 25 ohms). 2m J-Pole Antenna Simple J-Pole for the 2m band To adjust the SWR you will have to "play" with the 40mm distance between the coax feed and the braid -- inner conductor connection. Q: I built the dual-band J-pole antenna from the article in the September 1994 New Ham VHF/UHF Antenna,” page 61), but I just can't get it to work. I went to the local lumberyard and hardware store (a home building supply will work, as well) A Backpacker’s Delight— The Folding J-Pole A new twist on the old J-pole. I also built a 2m "slim jim" from 450Ω window line, also worked great. A good "base camp" antenna that I can erect when we get to a stationary point and a model that can attach to the side of my pack to get me better coverage than the whip antenna on my HT. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take…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. A balun is necessary because a J-pole antenna uses a balanced feed (the 1/4-wavelength matching section) connected to an unbalanced feed line (the coax). But instead of simply trying to load a two-meter jpole on 70 centimeters and proclaiming it to be a "dual bander ", the B-Square dual-band j pole is a true two-band antenna. ) This is an excellent performing J-Pole type antenna, constructed from readily available materials. More information. The radiation pattern is the same as every 2m vertical half-wave antenna, or also as a 2m J-Pole antenna. There's a reason they are low priced. Fortunately, there is an easy solution. Your going to like this super J-pole project, This home made j-pole is easy to build and sturdy, While looking for an jpole antenna project to build I remembered seeing a Marine antenna called the Super J-Pole in the 1988 ARRL Antenna Handbook, which claimed a 6 db gain over a quarter wave ground plane. 2db gain on the 2m band and a 5. 8 Feet Tall When mobile, I installed a Tram 1185 mag-mount antenna (which also works well, especially with the new FTM-100DR!). Connections are the same for the two antennas: radiator is connected to the same hot-end of the connector, and grounds are connected to the same mass. Ham Radio Antenna - N9TAX Slim Jim Dual Band Antenna Review. If you have any questions about this project, contact KK4ICE@ARRL. I decided to build this antenna by the same methode however I used the input joke as dexcribed on the homepage of Martin, DK7ZB. Open. Click here for a copy. Sounds complicated, but it really isn't. 5db but on the deluxe model with 10 feet the loss is still only about 1. The "quagi" antenna was designed by Wayne Overbeck, N6NB, amd is a high-gain antenna combining the high-impedance (and easy matching) characteristics of the quad antenna array and the high gain and ease-of-construction of the classic Yagi-Uda parasitic "beam" array. I built one of these myself and seems to work quit well. creates an end fed dipole yet still retains the j match system. J Pole antenna for 70cm part 2 by N6TWW. 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. So, I decided that a pair of dual-band copper pipe j-pole antennas were in my future. It works like any other 1/2 wave length antenna for the most part. Super J KB9HGI Cactus Dual band J-pole Dual band Cactus j-pole This is a very easy and simple 2 meter/70cm vertical antenna. I bought one of these 2M/70cm J-Pole antennas 5 years ago and it still works great!Authentic N9TAX VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole. Dual band GP is like two single band antennas have merged, one rotated by 45° arround the z-axis. reception. com/sub/jpole. The Comet CFM95SL is a professional quality, commercial grade 5/8 wave FM broadcast antenna that offers 3. At 2 meter frequencies the wave doesn't see the traps and acts as a regular slim jim antenna. Dual Band UHF VHF Outdoor Omni directional Fiberglass Antenna Mount INCLUDED. Direct element joint structure with two interconnected FRP outer-shells. The original Ed Fong Dual Band VHF/UHF 70cm/2m J-Pole PVC Pipe Antenna : Eye-On-Stuff. Coat Hanger 2 Meter Yagi Antenna. It is basically 3 parallel J-poles where the coax for each that this configuration suffers from the same drawback of using a 2 meter VHF antenna at UHF. The Vortex ‘Super J-Pole’ Antenna consists of a five eighth wave vertical radiator, a half wave tuning section and a …Authentic N9tax Vhfuhf Slim Jim J-pole Dual Band 2m 70cm Antenna Jpole. View the manufactures page for MFJ1414 The MFJ-1414 is a tall 58« inches. Saved by. 99 55cm-70cm Lolita Cute . 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. In stock fast delivery call now 2m 70cm dual band high performance gain base station antenna 2m and 70cm, consisting of a 3-element yagi for 2m range and a 6-element yagi for 70cm. The Slim Jim Antenna is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take off angle. 03:1 at 146MHz and below 1. From the CB to the PC! You have found a Skip shooter's Paradise for HAM / CB radio operators online. 25m, 70cm, including dual-band antennas (plus other custom frequencies too!) from our inventory of antennas, antenna parts, and antenna accessories for amateur radio and other radio applications. 5 λ @ 445MHz} . 9. Matt K-Dub. Covering 144 Mhz – 146 Mhz and 430 Mhz to 440 Mhz. Tame the predictable mast currents found in any j-pole antenna grounding conductive mast using a simple stub. Maximize. I give this pole a lot of credit I am able to get great distance and range on the 2 meter band. Dual Band 144/432MHz J-Pole Antenna - Colin G4FCN After the construction night in January (2016) several members showed an interest in this antenna. About Us. The matching stub illuminates the need for a coil (loss) and can handle immense high powers. Copper Pipe J-Pole Antennas By Rory Eikland, KG6HCU and Ken Larson, KJ6RZ The 2 meter antenna worked perfectly on the first try! It has a flat 1 : 1 SWR across the entire 2 meter band. Retevis Rt95 Dual Band Mobile Car Radio Vhf144-148mhz Uhf430440mhz 200ch Us. According to the J pole Handbook , A BUX VBALUN ($20) should be installed at the antenna feed point, or where the coax or feed-line attaches to the J-Pole antenna. The plans are readily available online from a number of sources. Hours & Info. Home Links My Slim Jim's My Gear How to's Files E-Mail: Check out the New!Flag mast mount Handmade Slim Jim Antenna's by N9TAX Let me start by saying that since discovering the slim jim antenna design I have really come to respect these antennas. 7db -30. me/interests/j-poleTame the predictable mast currents found in any j-pole antenna grounding conductive mast using a simple stub. This antenna is not designed to be connected directly to a radio. 6db gain on the 70cm band, amazing performer! Also it includes a 22cm separate uhf. J pole antenna per 50 Mhz, IK1ZOY. Product Description. 2. The idea of a folding version of the copper antenna appealed to me. Use this antenna anywhere you want an omni-directional antenna that throws real gain toward the horizon. 6:1 VSWR or less (6 Mc. The EAntenna EA270J is a vertical antenna dual band J-Pole optimized to give 6 dBi in the 2 bands with one run of coax. Great for locations where visual impact is a problem, this antenna gets you on the 4 most popular VHF bands. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. The J-Pole for VHF and UHF constructed with 240-Ohm- or 300-Ohm-Twinlead The lengths are for 145 MHz and 435 MHz. I followed that with a 440 MHz J-Pole. Similar ideas a 2 meter antenna made of copper tubes offering circular polarization. Shop with confidence. Advantages of a “J” Pole Antenna KF4EOK'S 2 meter super j-pole antenna build SUPER J-POLE FOR 435MHz by VK6YSF The World Wide Web Prepared By Paul Howarth VK2GX Email: vk2gx@wia. Made tough to withstand the elements. The Arrow Antenna OSJ 146/440 J-Pole is an inexpensive dual-band antenna that has been working wonders with my hand-held Yaesu FT-60R as well as my mobile Yaesu FT-5100 that I use as a base station. I bought one of these 2M/70cm J-Pole antennas 5 years ago and it still works great!NOTE: THIS ANTENNA WAS DISIGNED BY ARROW ANTENNAS AND IT WORKS GREAT. Amateur Radio. These are made from 300 ohm twin lead (old style TV lead-in wire). That one worked well also, but was a little harder to tune. Built with 3/8" 6063-T832 hard drawn J-Pole 2m/70cm £19. but it will receive text ) Thanks. 95 * Buy It *After Coupons & Promotions. Or you could go the commercial route as well. See my previous "J Pole Antenna Stand" project here! This revision is easier to build while becoming more robust and durable than my previous design. 0% positiveThe J-Pole Antenna - hamradio. This is a short video with modified the plans provided by http://ve3elb. Length Foot Wind MPH; D130J: 2m / 70cm / 23cm: 25–1300 MHz. 53 Buy It Now 23d 8h. This Pin was discovered by Dee Bee. Weather. 8 Feet Tall Diamond X-700HNA 2M/70cm 24' Vertical Base Antenna CP-5HS DIAMOND CP-5HS 7 / 14 / 21 / 28 / 50 MHz Trap Vertical Antenna 40 / 20 / 15 / 10 / 6 Meters 11. 5:1 VSWR across the 2m band and under 3. It works the 6 meter, 2 meter and 70 centimeter bands. Get great deals on eBay! AUTHENTIC N9TAX VHF/UHF Slim Jim J-Pole For HT 2m 70cm Antenna 10' Coax - $34. Characteristics of the EA270J. I am a new ham. I really love its simplicity (construction) and characteristics, especially on VHF and UHF. 00. The traditional collinear J-Pole, aka Super-J, improves This is our latest antenna featuring coverage in a single antenna - 2 meters, 220MHz, and 70cm. 4:1 throughout the band. Deploying J-Pole Roll-Up Antenna and Making Emergency Contacts. 6 meter j-pole antenna copper pipe. Comparing a typical 'J'-pole to a 1/4 wave or some sort of vertical array is an apples/oranges thingy. I wanted something a little more substantial, though, for when operating at my primary/secondary QTHs. Tech Info. The J-Pole antenna is a 1/2 wave antenna with a 1/4 wave matching stub. Make several to carry in your Go-Kit, in your car, etc. Home > ANTENNAS > V-UHF DUALBAND > VERTICALES > EAntenna EA270J J-POLE 2m-70cm. I have heard that a J Pole will work pretty well for 2 meters. I cant wait to get back on the air. 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! You can make them as roll-up J-Pole antennas. - 70cm (Top stub) - 1. SWR/Frequency. Share on Facebook! Remove this product from my favorite's list. The dimensions vary somewhat from build to build depending on velocity factor of the parts. J-Pole dari kabel NYY Pada Edisi berikutnya. But instead of simply trying to load a two-meter jpole on 70 centimeters and proclaiming it to be a "dual bander", the B-Square dual-band j pole is a true two-band antenna. It may resonate, but that’s only part of the story. Here’s Episode 26, which answers the question, “how does a J-pole work?” After quite a hiatus to update the Amateur Extra Class videos, I’m back to the Ask Dave series. Dual band 2M/70CM J-Pole/Slim Jim Antenna With 4meter coax cable,SMA-Female conn. This antenna was designed for the arm chair ham: - Cheap to build from common parts - No Special tools required - Simple design / No special skills required II. 90 Buy It Now 6d 17h. After researching and looking at all the possible solutions for a antenna that I either wanted to build or buy for 2 meter and 70cm use, I decided to attempt building a Super J-Pole. All you need is two rabbit ear antennas from Radio Shack, two CATV baluns, four feet of 3/4" CPVC pipe with one tee, and a bit of time. 5 metres long, and 70cm (433MHz) will be 0. It may not be intuitive at first, but the About SWR; My OSJ 146/440 J-Pole went through 3 hurricanes in 6 weeks, with gusts speeds, on occasion, as high as 153 MPH. This is where I bought it: Antena 2m/70cm, wasze propozycje. 4 dBi of gain and a power handling capability of 200 Watts CX-333 Tri-band 146-220-446 MHz base antenna, 6. Find j pole antenna from a vast selection of Antennas. They also have plans for a dual band version but I wouldn't bother. Larger diameter pipe increases bandwidth, but 1/2 inch is fine for amateur frequencies. I mainly use mine to test HT's and for local packet. View the manufactures page for MFJ1731 440MHz pocket roll-up antenna, « wave. True Dual - $49. The standard J-pole extends ½ wave above the top of the matching stub, with maximum current in the middle of the ½ wave element. Tania antena J-Pole na pasmo 2m/70cm