6 Meter Roll Up J Pole

Portable 6 Meter J-Pole Antenna with BNC Connector- 18' total length. center of the antenna. You can use this antenna for home, portable, or emergency use. The assembly is made up of 3 sections of 1 1/2″ PVC connected at the center with a 4-way adapter that neatly slips on the male end of the fiberglass. Exception: Meter socket and current transformer enclosures. MFJ-1730 Wire antenna, 2m J-pole, BNC Roll up this halfwave 2 Meter J-antenna and stick it in your pocket. A Portable Quad for 2 Meters by R. Amateur Radio has been a supreme way of communications for many ways of getting messages from one place to another for decades!. Width from 60cm to 200cm available. Upon self‐assembly the footprint of the structure is effectively reduced from about 100 to 1. One 10 - meter "Jungle Antenna" ground plane made with WD-1/T commo wire. owenscorning. 6 METER J POLE ANTENNA. I simply unrolled the antenna and hung in place. 2 Meter / 440 Rollup Model – Rolls up to fit in your pack. AmateurRadioSupplies. Laurence is the world leader, wholesale distributor to the Glazing, Industrial, Construction, Architectural, Hardware and Automotive Industries, supplying railing, windscreen, standoffs, and other supplies to major industries and manufacturers. I need to learn their names so I can thank them better on the air. >>Product features:. Extends to improve range plus it. The figures give the details of the dimensions, components and construction. Discover (and save!) your own Pins on Pinterest. 77 MB; The Art and Skill of Radio. 2 Meters and 70 Centimenters. Transmission lines are AC or DC (Direct Current at very high voltage has lower losses over long distances than AC). About KB3KAI Portable Roll-Up 2-Meter J-Pole Antenna The resource is currently listed in dxzone. Slide it inside PVC pipe for rigid vertical installation (retuning required). Lubricants are made up of several components and can be mineral or synthetic. Super J-Pole. The DBJ-2: A Portable VHF-UHF Roll-Up J-pole Antenna for Public Service. - Whether the "dual band J-pole" you speak of, has something close to a true half-wave pattern on both bands (e. Building these antennas are difficult because of the scarce availability of materials. Antena J-Pole bisa dikembangkan menjadi antena J-Pole Multi Band, yaitu untuk Band 70 cm, Band 2 meter dan Band 6 meter. I would attempt to get your antenna as high up as you possibly can, if you are using it in a horizontal configuration. This 2-Meter Dome was my living room, bed room, kitchen, and art studio for two months in the Himalayas. Description. 😈 swipe to see me do my latest trick from my new favorite…”. com Abstract The theory for a single band J-pole is first described. Works fine with my ft-7800 for the local repeaters. How to Build Several Easy Antennas for Amateur Radio. How many significant figures does each of the following num-bers have? a. It really interacted with the people standing too close, throwing off the SWR. J-Pole Home Page Product Catalog. I tried it tonight on the lowest power setting of the yaesu 0. The 6 meter J-Pole features a two piece design for shipping and easy storage. It often works well to roll the ball in a large spiral, but take note that this will leave an obvious pattern in the snow. Official website for Costsco Wholesale. Foreground p. I made a 9:1 Unun (QRP rated) which with the KX3 tuner I can cover 80-6 meters just fine. When copper tubing is used, the entire. 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. 1 MOTION Motion, more properly called "mechanics," is the oldest branch of physics, having been put on a firm quantitative basis by Isaac Newton (1642-1727) who by the age of 24 had also developed calculus, which subsequently became an indispensable tool of science. One time I was at the VIP site for a space shuttle launch with my handheld radio and the J-pole roll up antenna. the beginning reads to use 1. Just return it and it will be either repaired, a new one sent to you or full money refunded. Web-siden beskriver en forholdsvis simpel tobånds J-pole-antenne, der dækker 2 meter båndet og 70 cm båndet. Here is an URL for more information on J Pole antennas. 8 Can the Antenna Size be Scaled Down or Up for Other Bands? 6 7 8 5 June 1992 J-POLE PARTS LIST PROCEDURE. This makes the 2 Meter Slim Jim antenna a great solution for repeater sites, data and packet stations, APRS, and even every day. A calculator for constructing a J-pole or Slim Jim antenna. It's been hanging up in a pine tree for the last 3 years. I realize that the roll up (emergency) J Pole antennas are not an end all to poor indoor HT performance, but need opinions from others experience. 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. This is the split boom model with the duplexer. 40 meters on a 80 meter di-pole!), so you may want to double check that before using a balun. We laid out some scrap pieces of wood on our bench so that the pole stays level while bending. The 1990 ARRL Hand Book. This antenna can be used in HOA/CC&R restricted apartments or homes without drawing unwanted attention. THHN wire stranded meter 6. Make sure you don't roll it up to tight. This J pole is often used in the horizontal position on the 6 meter band. Back to the KB1DIG & KB1GTR Hampage. Request a quote on this. We also experienced a week of cold (around -12°C/10°F), and that took its toll on science operations. It is rugged and performs quite well. 220 MHz not only has repeaters but has become a. This makes the 2 Meter Slim Jim antenna a great solution for repeater sites, data and packet stations, APRS, and even every day. It will work on 2m, 70cm, crossband, GMRS, and the federal VHF band,by changing out portable radios. Since 90 percent of all amateur radio emergency communication involves 2 meter FM, a simple roll-up two meter J Pole antenna made of 300 Ohm ladder line was prepared. I have created a new j-pole antenna for use with the ICOM 2200h and have also added it into its go kit. I've never built a roll up J-pole for 2 meters, I always build them out of copper pipe, but I have built a couple of roll up J-poles for 20 meters. Shop by departments, or search for specific item(s). I wrap the wire where the fishing line goes. My main shack location has a commercial J-Pole Dual band mounted on a short mast. Portable Roll-Up 2-Meter J-Pole Antenna - KB3KAI Click to expand I thought that's a tutorial for making J pole, but it looks like the author makes and sells them and those on the website are the coax with connectors. Ultra Sheer Fabric Backdrops is a 3. Metal carport kits, steel garages, horse barns, rv covers, boat covers, storage sheds, & commercial-sized metal buildings. All items have been spoken for. This J pole is often used in the horizontal position on the 6 meter band. Three J pole antennas for 2 meters. It must be placed as high as possible, properlymatched to the transmitter, and designed to effectively radiate the powerapplied to it. Why buy from imitators? This antenna was featured in the March 2007 QST and designed by Dr. You Passed, Now What? Steps to Take After Earning Your HAM Radio License. Make sure you don’t roll it up to tight. 6 Meter – 18 Feet, 8 Lbs. 6 meter Portable J-Pole antenna, with 10ft of rg-174. I have put this antenna into the go kit of the Yaesu VX-6. A Portable Quad for 2 Meters by R. with all of the 2 meter elements: Here is a close up of the antenna. • When used on your HT, it will dramatically out-perform your sto ck antenna. This antenna is great when you need a little extra rx/tx range. What was the car’s acceleration? Answer: 4 m/s2 2. The 6 meter J-Pole features a two piece design for shipping and easy storage. HIGH QUALITY ANTENNA TRIPOD 29FT ALUMINUM PORTABLE TOWER MAST KIT NEW Authentic KB9VBR 2 Meter VHF SLIM JIM amateur ham radio J-Pole base antenna. J-poles can also be built of flexible parallel wire like twin lead and several commercial roll up J-poles are available and work quite well as auxiliary antennas for hand held radios. Shop by departments, or search for specific item(s). about $6 a pound so I grabbed a small handful of each hardware variety for future J-pole projects. It has been around for many decades [1]. That calculates overall to around 7. roll up the windows. Local carport pricing, shop now!. MECHANICS PRACTICE PROBLEM SETS 6 Gamzon & Gregorian-Michaelsen 6/13/12 Unit 2 KINEMATICS 2. 2 meter portable roll-up J-Pole; 6 meter Rubber Duck for SEM 52 military radio; Home page. THE VERTICAL DIPOLE. I have covered J-Poles quite a bit on this site [2]. 2 Meter J-Pole Antenna Build - Duration: 8:51. It looks like a standard J Pole with another section folded over from the top and going back down toward the matching section. With our nationwide network of locations, we are your one-stop source for all equipment needs. • 2 meter J-pole roll-up • Dual band (2 meter/440) aluminum J-pole • Dual band (2 meter/440) mobile mag-mount • 300 Ohm twin lead 6 meter vertically polarized omnidirectional end-fed antenna (roll-up or fixed) • G5RV-lite dipole 80 meter-6 meter • 40 meter Tak-Tenna Links to related material:. Comes with a neoprene pouch. } To Notch {in. Their Mills 41 was the final boat to sail into Nha Trang, Vietnam (18 Oct), but they corrected to first in class. Laurence is the world leader, wholesale distributor to the Glazing, Industrial, Construction, Architectural, Hardware and Automotive Industries, supplying railing, windscreen, standoffs, and other supplies to major industries and manufacturers. 51" roll-up J-pole for 440 MHz is like MFJ-1730, but shorter. The J-Pole can also be built for 6 and 10 meters using the formulas and cut it a little longer and have some fun with it! This site is ©2018 The Lakeland Amateur Radio Club, Inc. This Pin was discovered by Robert Busch. The 6 meter J-Pole is The 6 meter J-Pole features a two piece design for shipping and easy storage. aluminum pipe (for example 3/4 inch pipe which might be used to make a larger 6 meter J-Pole). DBJ-2 Portable roll up antenna - covered under US patent 9,608,336. 1 MOTION Motion, more properly called "mechanics," is the oldest branch of physics, having been put on a firm quantitative basis by Isaac Newton (1642-1727) who by the age of 24 had also developed calculus, which subsequently became an indispensable tool of science. Authentic N9TAX VHF Slim Jim J-Pole 2 Meter Antenna roll up jpole!! Details about Authentic N9TAX VHF/UHF Slim Jim J-Pole Dual Band MURS Free local pick-up. there was a simple way to convert a 2 meter J‐ pole into a dual band J‐pole DBJ‐2was developed from the successful performance of the DBJ‐1 but folks requested a portable version. Stainless hardware. A Traveler’s 2-Meter GP Antenna by Doug DeMaw, W1FB. Model 146/437-10WBP with Roll-Up Bag. Walmart's Every Day Low Princes on everything make it easy to stock up on the cords that let you plug in and power up electrical devices. Arrow Handheld 2m/440 Satellite Antenna Review. MFJ-1730 Wire antenna, 2m J-pole, BNC Roll up this halfwave 2 Meter J-antenna and stick it in your pocket. MFJ-1736 ROLL-UP J-POLE ANTENNA, 6-METER. 4 2 6 candela/m 2 cd/m 2 FORCE and PRESSURE or STRESS lbf poundforce 4. It is an EXCEL spread sheet that lets you put in the frequency you use most often (in CELL 6B) and then it tells you the aproximate length to make your J pole antenna arms for that frequency. Maybe we could talk bruce into hooking his (6 meter j-pole) up to a scanner or analyzer and letting us know!. 2 Reviews for J-Pole Antenna for 144/440 Dual Band by Ed Fong J-Pole Antenna for 144/440 Dual Band by Ed Fong I got this for a back up antenna for the shack and was surprised how well it was all I did was put it together and mount it and when I check it it 1. You can hang it from a tree or run it up a lightweight pole. 08 Displaying 351 to 360 (of 834 products). It has a very LOW angle of radiation, needs only ONE support, and has Attachment Cord and a generous length of good 52 ohm Coax Feedline. The manufacturer tells us the magnet will grab up to 5 lbs of metal, however Pat and Magnet Testing Team #3 have repeatedly lifted 10+ lbs, so it's very strong. Extends to improve range plus it. The J-pole antenna needs no grounding and has a high angle of signal radiation. 2 Meters and 70 Centimenters. Barker & Williamson Folded Dipole Antennas; Cobra Ultralight HF Antennas; Comet and Maldol Antennas; Cushcraft Amateur Antennas; Diamond Antennas; DX Engineering; High Sierra Antennas; Hustler Antennas; Hy-Gain Antennas. Omnidirectional full size 1/2 wave antenna with low angle radiation outperforms 1/4 waves. The next step - Would it therefore be more efficient if the intention to use a HT with a remote SpeakerMic, that the consideration of an external antenna, such as a roll up J-Pole/Slim Jim on a small flexible pole (Telescopic flag type affair) poking out the top of the back pack, is going to be far more efficient?. These are very easy to make or buy off of E-bay. All "Split Boom" antennas are Back-Pack Portable and fit in the "Roll-Up Bag" or "Duffel Bag" The "Dual Band Portable" J-Pole, A-OSJ-TPE, will fit in the "Duffel Bag" Antennas must be fully disassembled to store in either bag. I realize that the roll up (emergency) J Pole antennas are not an end all to poor indoor HT performance, but need opinions from others experience. Matt Heere 58,236 views. You have just saved yourself from a dose of poisonous air. This will give you additional mounting options, such as attaching to a mast or tripod. For the J-Pole 2M antenna click HERE. Notice that the dimensions on the DBJ-2 (roll up) are longer than the DBJ-1 (base station. That way if someone needs help from the person at camp it is easy to get ahold of them. Shower head comes with the 1-meter roll of polytetrafluoroethylene tape and contains a rotate dial for easy access to switch. It’s technically a center-fed ½λ dipole. One 6 – meter “Jungle Antenna” ground plane cut for 51. I would attempt to get your antenna as high up as you possibly can, if you are using it in a horizontal configuration. J-Pole Antennas for 2 Meters pop - This paper describes two types of 2 meter J-Pole antennas, one made of copper pipe and a roll-up J-pole made of TV twin lead. the Arrow dual-band open-sleeve type, or an Edison Fong dualband model) or whether it's a simple 2-meter J-pole (which will usually load up OK on 440 but is a 3/4 wave on that band and will thus tend to squint upwards. 5 Meters of ribbon feed cable for a J Pole and 7. Still wrapped in shipping cardboard. Works fine with my ft-7800 for the local repeaters. I'm sure that you'll be happy with either antenna. Roll-up Portable 2 meter Antenna- WH2T, J-Pole and a GP Project; Portable/Mobile 2mtr J antenna; J-pole For Any Frequency- Calculator A 6-2-70 Jpole More pages with diagrams and dimensions for building J-poles: YO5OFH N6MRX N4BZ LA3F QUAD ANTENNAE:. A bus is moving at a speed of 20 m/s, when it begins to slow at a constant rate of. Providing a broad array of unique productivity solutions, Snap-on makes work easier for professionals performing critical tasks around the world. 801-12-77 Sign Stand, Portable for Roll-up Signs, One-foot Mounting Height from bottom to Grade (rev. Despite its light weight and simplicity, the J-pole is a time-proven design that radiates efficiently and exhibits low VSWR. USA Track and Field National Officials Committee Training Sub-committee How to Set Up the Pole Vault John Lilygren Pacific Association [email protected] Ratchet straps are ideal for a number of tie-down applications, like securing loads to vehicles and keeping construction materials in place. Omnidirectional full size 1/2 wave antenna with low angle radiation outperforms 1/4 waves. The manufacturer tells us the magnet will grab up to 5 lbs of metal, however Pat and Magnet Testing Team #3 have repeatedly lifted 10+ lbs, so it's very strong. of fine wire. This Pin was discovered by Robert Busch. 84 Lumber is your source for building supplies, building materials and all your construction needs. One 10 - meter "Jungle Antenna" ground plane made with WD-1/T commo wire. Purchase from this catalog of now!. Here is an URL for more information on J Pole antennas. Arrow Handheld 2m/440 Satellite Antenna Review. Leonard is a leader in the tool and supply business with emphasis on doing business the old fashioned way. It also discusses the DBJ's basic theory of operation, and offers experimental results comparing the DBJ-2 with a standard ground plane. covers the 2 meter (144 Deployment of a roll-up J-pole consists of hanging the top. Slide it inside PVC pipe for rigid vertical installation (retuning required). Entrance from Oort Cloud will be through Sagittarius by 2 Accounts. Of the thousands of moments in all the games, here are 41 that stood out to News Journal reporters Brad Myers and Kevin Tresolini. aluminum pipe (for example 3/4 inch pipe which might be used to make a larger 6 meter J-Pole). The gain of this antenna is approximately 3 dB over a 1/4 wavelength 2 Meter vertical antenna. com Figure 3 The 2 meter J-pole modified for both VHF and UHF roll up dual band with. The 6 functions include rain, massage, mixed spray, aerated, mixed aerated, and trickle. J Return Reel System to Pool 1. There are some good web sites on home-made antennas, and they seem to favour Slim-Jim or simpler J-pole designs and have pretty good configurators and step-by-step guides. 6 Meters for the Slim-Jim. This antenna can be rolled up for easy portable use and will outperform a rubber ducky. No endorsement may be inferred from the mere listing of a URL or link. Mounted at, say 6 feet (center), which do you think would perform the best (all else being equal) between a 1/2 wave with a ground plan or a roll up (N9TAX) J pole?. Free Shipping on orders $50+. Browse our site for information and then call one of our three retail locations below for answers to your questions or for pricing information and quotes on your projects. Extra 6ft low loss RG58AU extension cable for the DBJ-2 roll up antenna $5 We basically sell accessories at cost. Bend the pole every 18". Well he did it this. - Whether the "dual band J-pole" you speak of, has something close to a true half-wave pattern on both bands (e. 2m/70cm Dual Band J-Pole by KK4ICE. Since 90 percent of all amateur radio emergency communication involves 2 meter FM, a simple roll-up two meter J Pole antenna made of 300 Ohm ladder line was prepared. What’s a Pole Barn, and How Much Does it Cost to Build a Pole Barn? A pole barn is a farm building with metal sides and no foundation, so many of our metal buildings can be used as pole barns. The feed coax enters through the bottom end of sleeve and runs up to the. Ed Fong WB6IQN also makes good roll-up dual-band J-Poles - available here The Dual-Band Open-Stub J-Pole Antenna Built out of heavy duty 3/16" angle aluminum, UHF SO-239 connector with 3/8 aluminum elements and all stainless steel hardware. No endorsement may be inferred from the mere listing of a URL or link. Request a quote on this. 5 :1 over 10 MHz bandwidth. the Arrow dual-band open-sleeve type, or an Edison Fong dualband model) or whether it's a simple 2-meter J-pole (which will usually load up OK on 440 but is a 3/4 wave on that band and will thus tend to squint upwards. The J-Pole can also be built for 6 and 10 meters using the formulas and cut it a little longer and have some fun with it! This site is ©2018 The Lakeland Amateur Radio Club, Inc. 1 MOTION Motion, more properly called "mechanics," is the oldest branch of physics, having been put on a firm quantitative basis by Isaac Newton (1642-1727) who by the age of 24 had also developed calculus, which subsequently became an indispensable tool of science. 2m / 70cm dual band roll up j pole antenna, can it be done? The DBJ-2 is the roll up version. Leonard is a leader in the tool and supply business with emphasis on doing business the old fashioned way. 34 ELECTRON BEHAVIOR IN A CHEMICAL BOND [author Michael Liebl] Learn how to use a computer to explore the inner processes of a molecule by finding solutions to the Schrödinger. This antenna is designed for amateur band frequency for both VHF (2m) and UHF (70cm). Web-siden beskriver en forholdsvis simpel tobånds J-pole-antenne, der dækker 2 meter båndet og 70 cm båndet. The following measurements are trom the soldered end. This is called the j integrated match (jim) the antenna itself is very slim hence the name Slim Jim. 2-Meter Portable Roll-Up J-Pole Application & Usage Suggestions A more permanent mounting suggestion is to install the antenna inside a PVC pipe. I folded over the wire at the tip to shorten it up. What can I do? A: Try adding a balun to the coax. J-Pole antenna's have an omnidirectional radiation patterns with a low angle of radiation when vertically polarized. quarter-wave stub internal to this antenna is a transformer that provides a means of transforming the high impedance of the half-wave section of this antenna to that of the lower impedance coaxial transmission line. I can also operate in the 2 meter and 70 cm bands with a hand-held Baufeng UV5R. MFJ-1736 6 Meter J-Pole Travel Antenna MFJ-1736 Download Manual Hang this 6 Meter J-pole in the clear and enjoy some exciting DX QSOs $28. The DBJ-2: A Portable VHF-UHF Roll-Up J-pole Antenna for Public Service. one end strip off 1/2" of insolation from both conductors. The SWR showed a nice resonance point but it was below ten meters more like eleven meters. 6 Meter - 18 Feet, 8 Lbs. That made for a good demonstration. There are some good web sites on home-made antennas, and they seem to favour Slim-Jim or simpler J-pole designs and have pretty good configurators and step-by-step guides. By searching on the Physics121 site for syllabi of courses from previous years you can find some exams given at that time. There are roll up J-Poles made of RG-58 coax and 300ohm twin lead (I’ve never had any luck with them) and tons of other field antennas. Antena J-Pole bisa dikembangkan menjadi antena J-Pole Multi Band, yaitu untuk Band 70 cm, Band 2 meter dan Band 6 meter. com help you discover designer brands and home goods at the lowest prices online. I used it to demonstrate a RigExpert aa-600 at a club meeting. Box 34023 Seattle, WA 98124-4023 Account & General Questions: Contact Us. I spotted myself on VHF, but did not get any contacts here. With our nationwide network of locations, we are your one-stop source for all equipment needs. BulbHead® is the official inventor of Pocket Hose, Atomic Beam, Star Shower, Red Copper Pans. Well he did it this. There are some good web sites on home-made antennas, and they seem to favour Slim-Jim or simpler J-pole designs and have pretty good configurators and step-by-step guides. What I use for a "Deep Woods" antenna is a "Roll-up" J-pole made from 300 ohm twin-lead TV antenna wire. VHF/UHF Dual Band J-Pole By: Ed Fong WB6IQN email: [email protected] Build a Portable Groundplane Antenna by Zack Lau, KH6CP/1. 1/2-WAVE COLINEAR "EMERGENCY FIELD" 2-METER 146 MHz FM J-POLE This low power antenna will be coming with me this summer on the motorcycle. What’s more, it has the same performance as a J-pole, but is shorter and. 305(j)(6)(ii)(B) A means shall be installed to isolate from all sources of voltage each capacitor, capacitor bank, or capacitor installation that will be removed from service as a unit. DBJ-UHF was developed from a grant from AC Daughty to develop a low cost medium gain MESH antenna for UHF. TV Lead Ham Radio roll up J-Pole Antenna. West, Toronto Ontario M3N1V7 Tel: 416-667-1000 [email protected] "Screw together J-pole" entered my gray matter. 85*200cm Premium Retractable Roll up Banner Stand JinYu offers a variety of high quality pull up banner stands (retractable banner stand, roll up display banner stands). Based on these fundamentals, a technique is introduced to extend these principles to achieve dual band operation. This Pin was discovered by Robert Busch. VHF/UHF Dual Band J-Pole By: Ed Fong WB6IQN email: [email protected] The 2-Meter 300 Ohm TV Twin-lead Roll-up J-pole. SMA connector When KC0ZEQ sat down one day and built a roll up twin lead J-Pole He said; "Is this the best we can get out of this antenna design" So he set out to make one that was more efficient. 4), on all classes of people (v. 28 feet ft. Your One-Stop Source of Top-Quality Auto Parts and Accessories Online. For sale is a 25' direct burial brown pole. It was a bit rich for my blood, and I considered making my own, but without an SWR meter or antenna analyser to test what I made, wasn't confident. This will give you additional mounting options, such as attaching to a mast or tripod. This MFJ Pocket Roll-up is the perfect gain antenna for traveling. MFJ-1730 Wire antenna, 2m J-pole, BNC Roll up this halfwave 2 Meter J-antenna and stick it in your pocket. Only if you're *really* desperate to get a little better signal than you already are with the J-pole, you can tweak this until you become frustrated. 08 Displaying 351 to 360 (of 834 products). 2m / 70cm dual band roll up j pole antenna, can it be done? The DBJ-2 is the roll up version. VHF/UHF Dual Band J-Pole By: Ed Fong WB6IQN Figure 3 The 2 meter J-pole modified for both VHF and UHF operation. 5 (8) alum wheels, lh roll up, 1/2 folding jail, floor is fully cleated, lighted sign for more information call don 806-290-7725. 6 meter Portable J-Pole antenna, with 10ft of rg-174. This MFJ Pocket Roll-up is the perfect gain antenna for traveling. Attach the antenna inside. There are some good web sites on home-made antennas, and they seem to favour Slim-Jim or simpler J-pole designs and have pretty good configurators and step-by-step guides. Comes with a neoprene pouch. You could also use 450 ohm ladder line if the tv twin lead isn't available. covers the 2 meter (144 Deployment of a roll-up J-pole consists of hanging the top. 2 meter portable roll-up J-Pole; 6 meter Rubber Duck for SEM 52 military radio; Home page. MFJ-1736 ROLL-UP J-POLE ANTENNA, 6-METER. The DBJ-2 package includes the pre tuned antenna, ready to unroll and install. The J-pole antenna, more properly known as the J antenna, was first invented by Hans Beggerow in 1909 for use in Zeppelin airships. then instructs to do the calculation on the linked site (which was a handy little tool). 2 Meter J-Pole Antenna Build - Duration: 8:51. Amateur Radio has been a supreme way of communications for many ways of getting messages from one place to another for decades!. As such, it will. Leonard is a leader in the tool and supply business with emphasis on doing business the old fashioned way. 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 off angle. Just trying to show that the J-Pole is a proven performer. The DBJ-2: A Portable VHF-UHF Roll-Up J-pole Antenna for Public Service. The article describes how to the principles of dual band J-pole (DBJ)-1 can be extended to a portable roll-up antenna, called the DBJ-2. 3 to 1 over a 6 MHz bandwidth and less than 1. We fabricated two identical J-Poles using the dimensions in this document, and both of them performed quite well, with a resonant frequency toward the lower end of the 2-meter Amateur band and a VSWR of 1. There are three classes of electric utility lines: transmission, three-phase distribution, and single-phase distribution. Shop BulbHead. 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! Are you looking for a truly portable antenna with BIG performance? This deluxe version is the same as my basic version but with 2 differences. SMA connector When KC0ZEQ sat down one day and built a roll up twin lead J-Pole He said; "Is this the best we can get out of this antenna design?" So he set out to make one that was more efficient. How to Build Several Easy Antennas for Amateur Radio. the shield to the sleeve. The DBJ-2: A Portable VHF-UHF Roll-Up J-Pole Antenna for Public Service by Edison Fong, WB6IQN. 6 meter Portable J-Pole antenna, with 10ft of rg-174. The 6 meter J-Pole is The 6 meter J-Pole features a two piece design for shipping and easy storage. The feed point is the apparent shunt (mini-dipole), between the radiator and the resonator, just above the bottom shunt. Portable 6 Meter J-Pole Antenna with SMA Connector- 18' total length Includes convenient carry pouch Includes 6 foot synthetic line to make it easy to hang almost anywhere. THHN wire stranded meter 6. The 2-meter roll-up J-pole is lightweight (approx. It rolls up and fits into the bag with no problem. Artículo: VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole VHF/UHF Slim Jim J-Pole Dual Band 2m 70cm Antenna jpole Great for ecom roll up and put in go kit! 2 meter 440 Estado del artículo:New Cantidad: 1 Más de 10 disponibles Precio: USD20,99 Aproximadamente 16,21 EUR Envío: USD12,76 USPS First Class Mail International | Ver toda la. It must be placed as high as possible, properlymatched to the transmitter, and designed to effectively radiate the powerapplied to it. Trailed behind the airship, it consisted of a single element, one half wavelength long radiator with a quarter wave parallel feedline tuning stub. Aluminum J-Pole Build John Kotecki (KD8PVS) Jason Kotecki (KD8UCP) The original idea came from the Arrow Antenna open stub J-Pole which is made. My first antenna was a N9TAX roll up j-pole that I bought. The tech net started with me having some mic troubles and i got them resolved. The 2-Meter 300 Ohm TV Twin-lead Roll-up J-pole. Slip each pole through the holding strap on the hoop bender and push the pole up to the mark you made. usually narrower. Free two-day shipping for hundreds of thousands of items on orders of $35+ or free same-day store pick-up, plus free and easy returns. We have several space sizes available: Sizes from 5' x 6' to 10' x 28', Roll-up doors 7' 3" High x 8' wide. BulbHead® is the official inventor of Pocket Hose, Atomic Beam, Star Shower, Red Copper Pans. Project Overview. The auction will be held at 4 pm. 220 MHz not only has repeaters but has become a. Define reel. 5:1 or better over the entire band. 0 MHz, photo below, details seen elsewhere on this website. Ham Radio Equipment Home N9TAX Slim Jim 2 m roll-up J-pole antenna ($23, see reviews and TS-570S covers 6 meters as well. emergency situations, you may not have the luxury of moving. Notes 1The 2 meter J-pole is a third harmonic an-tenna on 70 cm (432 MHz). DBJ-UHF was developed from a grant from AC Daughty to develop a low cost medium gain MESH antenna for UHF. 28 feet ft. The assembly is made up of 3 sections of 1 1/2″ PVC connected at the center with a 4-way adapter that neatly slips on the male end of the fiberglass. MFJ-1812, $19. The ARRL Antenna Book. 89 kilopasca ls kPa APPROXI MATE CONV ERSIONS F R OM SI UNITS Sy mbol When You Kno w Multiply B y To Find Sy mbol LENGT H mm millimeter s 0. 2-Meter Portable Roll-Up J-Pole Application & Usage Suggestions A more permanent mounting suggestion is to install the antenna inside a PVC pipe. Since 1965, Sierra Designs has been creating high performance camping, high alpine and backcountry gear from ultralight tents & sleeping bags to down jackets. I think one tuned to 145mhz or so would be fine for receive-only use, up to 900mhz or so. , a 501(c)(3) and Florida non-profit corporation.