an inexplicably simple and exorbitantly priced antenna for the 2-meter band. Oct 25, 2019 - Converting a J Pole Into a Slim Jim Antenna. ) Perhaps the most difficult item to locate for this project is the 3/8″-24 threaded rod. This calculator can be used to design a Slim Jim or a J Pole antenna. I had a lot of trouble programming it but that is another story! Construction of the 2 Meter Copper Slim Jim Antenna (Slim Jim details here). Build A 9 dB, 70cm, Collinear Antenna From Coax I really didn't expect success considering how precise the measurements seemed to be and the amount of connections to be made, but I figured I'd give it a go anyways Certainly some antenna systems have visible coax, but few have the great big loop of coax waiting for physical impairment by whatever the world. Making it thinner just reduces the effect. Three Simple Home Brew 2-Meter Antennas. The J-pole antenna, more properly known as the J antenna, is a vertical omnidirectional. 49” 36” Prototype was made of 1/2 inch copper pipe. The length of the antenna is three quarter wavelength. Collinear J antenna. It’s easy to make stand-offs from small PVC pipe. I'm going to try the Slim Jim method (pipe or 300ohm), suggested by the list a little while ago, to see if it extends the range of a 433MHz data transmitter. Make PVC Parts first. CONSTRUCTION: ===== The Slim Jim should be constructed from 1/2" copper pipe. Stand upright (on a railing, etc. This article describes a collinear antenna made from very inexpensive RG58/U coaxial cable and encased in PVC pipe. 2m Slim Jim antenna made for under £10. White PVC Class 200 Pressure Plain-End Pipe This JM EAGLE 3/4 in. 2m Slim Jim. This 2 Meter 300 Ohm Slim Jim antenna is constructed from regular 300 ohm twinlead. This ultra-simple antenna is made from these . Three turns (for 145MHz) of the coaxial cable around a 40mm former (PVC pipe etc), or taped up and hung freely is. M0UKD's page says: "It is recommended to use some sort of choke at the feedpoint. Here are my notes on creating a 3-beam Yagi antenna for 2m out of a tape measure and some PVC pipe. Mast Mountable J-Pole Antenna Flagpole Knob is located in the George Washington National Forest, along the border of Virginia and West Virginia VE3DQN - Very limited time and low antenna at this QTH It was founded by Jared Bailey and Dennis Greenia in 1987 and is currently edited and published by Pete On my short list for this is a Buddipole antenna system using a dipole for. The bottom of the irrigation tubing fits inside a short piece of 4 inch PVC pipe which is slotted and clamped to the tubing with hose clamps. Three turns (for 145MHz) of the coaxial cable around a 40mm former (PVC pipe etc), or taped up and hung freely is adequate. M0UKD's page says: "It is recommended to use some sort of choke at the feedpoint. I remembered an all-direction horizontal antenna made by Jan PA3EGH (one of. yagi antenna for 2 meters band Slim-Jim 2m Antenna Drawing and assembling instruciton for Slim-Jim 2m Antenna 2 Meter J-pole from 450-Ohm Ladder Line Great first time J-pole project. Various type of antennas very suited for mounting inside PVC plumbing and rain water drainage pipes. Keep in mind that the antenna will drop in frequency when enclosed in the PVC pipe. I then bought 2 ten foot pieces of 3" PVC pipe, a top cap and a connector piece. Magloop antenna for 20m. I used 1″ thin-wall PVC pipe, aluminum tape, and RG-8X coax. Good catch ALKVA!. I had a lot of trouble programming it but that is another story! Construction of the 2 Meter Copper Slim Jim Antenna (Slim Jim details here). I really appreciate it! R. The fully-encased antenna is lightweight, portable, and adequate for most field and home operations. I had a lot of trouble programming it but that is another story! Construction of the 2 Meter Copper Slim Jim Antenna (Slim Jim details here). The center of the antenna should not be higher than λ/4. If anyone has done this and noticed a change in length required please let me know. It can operate on all amateur radio bands within 3. PTFE Pipe untuk memegang gap X 10cm. root of the dielectric constant of PVC. A home brew DIY Delta Loop antenna. You’ll only need to add an insulated ground-mount and a feed point I have the antenna connected from drain pipe to tuner, MFJ 696,I have a lot of noise on all frequencies Thread starter N9JIG chart compare tv antenna gain winegard channel master radio shack philips 94 Rope Cleat $1 94 Rope Cleat $1. Just enough to remove the wire. 25 ต. Pictures and plans to build 70 cm yagi antennas. Magloop antenna for 20m. TBJ-1 triband base antenna 2mt/220 MHz/70 cm –-$60 -includes shipping with 6ft. I used 1″ thin-wall PVC pipe, aluminum tape, and RG-8X coax. These antennas do not require a ground wire. This will create an air-choke balun to match the. I had used Slim Jim antenna calculator to calculate dimensions required for CDMA 800MHz band. Now that the leaves are starting to fall with cooler weather setting in, I expect that the distant 2 meter repeaters will be stronger on my brand new Icom IC-V8000. section of PVC pipe. 2-wire Reflector experiments. Harbor Freight is a leading source for specialized tools for automotive and motorcycle repair. Technical: Thebasic "J" is reported to have >3dB of gain over a l ground plane antenna and 6dB over an isotropic (theoretical)antenna. As shown in the picture make a hole (just enough to put the no 20 copper wire) across the PVC pipe from the one end of it. I remembered an all-direction horizontal antenna made by Jan PA3EGH (one of. I don't know what this one is called It makes a good Antenna to take Camping or Emergency use. Oct 25, 2019 - Converting a J Pole Into a Slim Jim Antenna. net Services. Use paste flux on all joints when fitting the pieces together. The Yagi antenna's overall basic design consists of a "resonant" fed dipole (the fed dipole is the. Details about Ed Fong GMRS Antenna -DBJ - +5dB Gain Antenna (pvc pipe not included) See original listing. Black Pipe. This twin coaxial is used for B-Sky B /Sky HD tv installs. 300 Ohm Feed Line Slim JimJ-Pole Antenna 4 Make a small holes using an Exacto Knife. 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. attached the Slim Jim antenna to the PVC pipe using the bottom crossover section and the. Networking Connectivity , Boosters, Extenders Antennas ,F,,Booster 2x MULTIBAND Magnetic Antenna Max 69 2x MULTIBAND Magnetic Antenna Aerial Signal Booster 4G LTE SMA F. Electronic Schematics. My DAB receiver is the Pure Evoke 1 and I live 3 miles west of Leicester. Here are a few I liked. Above: This is my NORTH 160-Meter loop antenna. Slim-Jim 2m Antenna. Collinear J antenna. It will be mounted in a piece of 200PSI PVC pipe to serve as the antenna’s radome and can be attached to a tower leg, pipe mast (using hose clamps),. This calculator can be used to design a Slim Jim or a J Pole antenna. 41 * 12 = 4. See more ideas about antennas, ham radio antenna, ham radio. 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. 95 Our Price $56. I used 1″ thin-wall PVC pipe, aluminum tape, and RG-8X coax. I have since read from a post somewhere that J Pole antennas are. A folded dipole has a feed-point impedance of approximately 300-ohms rather. I have had this antenna on my . However, keep in mind that a high-gain antenna pattern has narrow elevation angle. CPVC Bushing 6 1/2' of PVC pipe 90' of 12 gauge stranded copper wire Hot glue or Epoxy Please Like this video and be sure to Subscribe to see more videos from me. It was in Practical Wireless April 1978 that the "Slim Jim" 2 m vertical antenna first made its appearance. 21 watching. consists of around 9 close turns of the coaxial cable around a 40mm former (pvc pipe etc), or taped up and hung freely. The Hex-Beam antenna contains 6 sets of wires providing a two-element directional antenna covering the 20M, 17M, 15M, 12M, 10M, and 6M Amateur Radio Bands. Putting an antenna inside PVC pipe will change the tuning due to the dielectric effect of the plastic. Homebrew 20 Meter DiPole. The Slim Jim, designed by the late Fred Judd, G2BCX, can be a great portable ‘roll up’ antenna, if made out of 300Ω or 450Ω ladder line / twin feeder. He also has a 220 MHz version. Below is a trial by jury!. These measurements were made with the plain antenna, not mounted in the PVC tube. Using a grid dip meter, cut the antenna to resonate on 224. The coaxial feed connection is attached with one small cable ties for strain relief. I have received nasty scraps when rolling up or handling the antenna. Shares: 289. The antenna can be suspended from a near by tree limb or use a. 5db of gain. 3/4” Square Ended PVC End Caps. PVC pipe which is also a good insulator. He also has a 220 MHz version. Make PVC Parts first. The resulting antenna design is very straightforward, using the Velocity. Plus 2 to 3" PVC isn't going to be light anyway. Both design are meant to be fed with 50-Ohm impedance coax feed line (RG-58/RG-8/RG-213) to obtain the most optimized results. The loops should be tight around the PVC and touching each other. Shares: 288. Again, keep it away from conductive objects a minimum of 20 inches from the bottom. 1 [1+1] Last promotion price♥Made by Qoo10 Premium AA Ultra Alkaline Battery 12pack = 24pcs. The loops should be tight around the PVC and touching each other. Interestingly, there's plenty of conflicting opinions as to whether a "Slim Jim" is any different than a J-Pole performance wise. " Make sure the space between the tower or mast and the an-tenna is one "freespace" 1/4 wavelength. Some Notes on the Slim Jim Antenna – M0UXB. » Sat, 02 Apr 1994 10:57:00. I had a lot of trouble programming it but that is another story! Construction of the 2 Meter Copper Slim Jim Antenna (Slim Jim details here). For my first duplexer in the 1990's, my interest was the 420-450 MHz amateur UHF band, 70cm. Plus one section of non-conductive material (dark color in picture). 2 - Roll up J-Pole/Slim Jim antenna. From pool pumps to process engineering, fire suppression to farmland, seaside to skyscraper; our solutions are designed with you in mind. Contact Us Headquarters +1-800-467-7261 +1-205-323-7261 Fax: +1-205-251-7838 Corporate Headquarters 1205 Hilltop Parkway Birmingham, AL 35204 Terms & Conditions Find Form General Inquiry Form Our Locations. The Center Insulator and Coil Mounts. You could make the mast taller with additional sections of PVC pipe and longer guy ropes. Slim jim antenna in pvc pipe. Related Post: J-Pole and Slim Jim Repeater Antennas. A magnifying glass. Use a weight to hold the 19″, 57-1/2″, and 2″ pieces, and the Tee and the elbow, flat when they are sweat soldered together. Assembly is complete in just a few minutes, here is a photo of the antenna completed and some rough dimensions and features. A magnifying glass. what that distance is. Above: This is my NORTH 160-Meter loop antenna. This antenna is unique in that it is enclosed entirely in 3/4" PVC. The 6 meter J-Pole antenna is shipped UPS Ground in a sturdy box 1/2 wave antenna principle byar. 2 ★LOWEST PRICE GUARANTEED★ DRYPERS DRYPANTZ BABY DIAPERS. This time it's an inexplicably simple and exorbitantly priced antenna for the. The "J" can be made from almost any material: copper pipe, steelwhips, and even 300 ohm TV twin-lead. The esteemed Slim Jim antenna was invented by Fred Judd G2BCX on the basis of the J Pole antenna, which was based on the German Zepelin antenna. Below is a 2M Slim Jimbuiltfrom a five foot scrap of 1/2 Inch Schedule 40 PVC Pipeand #14 AWG Bare Copper wire. 00 There are times when you may need more gain than the standard J-Pole antenna. When autocomplete results are available use up and down arrows to review and enter to select. Both design are meant to be fed with 50-Ohm impedance coax feed line (RG-58/RG-8/RG-213) to obtain the most optimized results. The indoor shortwave antenna is a compromise when you cannot install an outdoor antenna The measurements below are for building a simple Dipole Antenna Screw or rivet the PE studs to the radiator The collinear direction is defined through the light-like vector Peµ=pµ 1,m − p2 1,m n µ 2n·p1,m, (2 This makes the 2 Meter Slim Jim antenna a. M0UKD's page says: "It is recommended to use some sort of choke at the feedpoint. The three pieces of PVC pipe are held together with a PVC T joint near the center of the boom and secured by screws. Key features are. 23 cm Band Repeater and Coaxial Collinear Antenna for Mt Super J-Pole Antenna (Collinear Design) - By KB0YKI Because a collinear antenna is hot with RF along the shield of the coax, it is necessary to prevent the RF from coming back through the Use the same formula for calculating a half wave length of coax Antenna element: Omnidirectional. DBJ-2 dual band roll up antenna -available in HAM (144-148 MHz and 440-450 MHz) or Commercial (152-157 MHz and 460-470 MHz) includes 6ft extension, BNC, SMA and SMA female adapter $25 TBJ-1 triband base antenna 2mt/220 MHz/70 cm --$60 -includes shipping with 6ft of pvc pipe. 850 Mhz using 3. A magnifying glass. Ace Corporate and Vendor Care Center: (630) 990-6593. A Ladder Line Slim Jim Antenna For 2M. The Slim Jim antenna is similar to the J-Pole with increased RF energy at the horizon This antenna will work with gain and does well horizontal at 10 feet above earth as an NVIS antenna Using two 9:1 baluns, back-to-back, one at each end of the 450 Ohm. The advice on chokes for the Slim Jim antenna is to put it close to the feed point on the antenna with 3-4 turns. Two bricks kept for extra weight and support so that the pipe should not tilt. Search: Homebrew Flagpole Antenna. Slim jim antenna in pvc pipe. Many operators mount these antennas inside of PVC pipe, which requires them to be shortened. (34-3/4” & 15”) Remove the wire between the cuts. Here is a 70cm (440 Mhz) J-Pole antenna that is inexpensive, and easy to build. I'm using a DIY "slim-jim" constructed pretty much in keeping with these plans from a PCS site. Pictures and plans to build 70 cm yagi antennas. Below is the checklist of components required to construct a 2 meter vertical antenna: 3/4 ″ PVC pipe-- Length to suit. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids!The 2 Meter Slim Jim antenna a great solution for repeater sites, data and packet stations, APRS, and even every day. The Slim Jim is an end fed folded dipole antenna that gives you approximately 5. While both types are widely used, there is a difference between uPVC and PVC. We deliver premium products at value prices, to keep your business running smoothly. 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. Store; Contact us (201) 660-5051. This antenna is complete, with exception of the 20” long of 1” inch Class schedule 200 PVC pipe needed for the antenna. This Slim Jim antenna can be used inside by supporting from string, nylon cord, etc from a high point in the room or used outside by hanging or supported from a suitable length of PVC pipe, (see standard Slim Jim design) wood or other NON-CONDUCTIVE MATERIAL. I don't know what this one is called It makes a good Antenna to take Camping or Emergency use. Also the fittings are not compatable between the two types, the 100 PSI fittings are the same beige color as the pipe. " Make sure the space between the tower or mast and the antenna is one "freespace" 1/4 λ length. Putting an antenna inside PVC pipe will change the tuning due to the dielectric effect of the plastic. The 1/2 inch diameter hole is for the hinge pin. _____ Questo balun 1:1 si interpone tra una linea bilanciata (ad esempio un dipolo) e la linea (sbilanciata) in cavo coassiale Or in geek speak - a diy. A magnifying glass. Business hours. Balanis (or) Modern Antenna Design by Thomas Milligan. 2 Meter Slim Jim Antenna. Here the variable capacitor is up on the bookshelf, with the radio simply placed near the loop on the lower table. Slim Jim Gmrs Antenna. Anyone tried to build a Slim Jim of J pole antenna for that frequency lars H. Building the Slim Jim antenna This guide assume you want to build a slim jim antenna that centered on 146MHz. Shop Online At The Official QVC Website. A stub of RG-8X coax shorted at the top acts to seperate the VHF/UHF segments of the antenna. Magloop antenna for 20m. I had a lot of trouble programming it but that is another story! Construction of the 2 Meter Copper Slim Jim Antenna (Slim Jim details here). The PVC pipe I had on hand was 2" diameter but as. It is easy to apply with included in-lid dauber and its clear color provides a clean finish. Sales Price $44. Rigid Tubing. Covers most of the basics. I'm using a DIY "slim-jim" constructed pretty much in keeping with these plans from a PCS site. Oct 9, 2011 · That is a good point, the slim jim and J-pole antenna's will couple with close objects. Now, I'm not sure of the performance difference between these two. I had a lot of trouble programming it but that is another story! Construction of the 2 Meter Copper Slim Jim Antenna (Slim Jim details here). The loops should be tight around the PVC and touching each other. x 10 ft. 00 shipping + $6. I had a lot of trouble programming it but that is another story! Construction of the 2 Meter Copper Slim Jim Antenna (Slim Jim details here). All measurements are the closest "guestimations" without using a machinist caliper. 5 feet of 14-gauge wire wrapped lengthwise around a ten-foot section of 2" PVC pipe, secured by plastic wire ties. I really appreciate it! R. amateur radio band. Technically, the "J" antenna is an end-fed ½ λ antenna that uses a ¼ λ matching stub. This antenna is similar in construction to the 2-meter OFC sleeve dipole I built over 8 years ago, but it is a simple center-fed dipole. The wire is glued to the pipe to keep the spacing. This 2 Meter 300 Ohm Slim Jim antenna is constructed from regular 300 ohm twinlead. This is a basic electrical principle and no fault of the antenna. I know that the PVC pipe affects antenna tuning and I believe Carl has taken it into account. At the balcony he has a Diamond V2000 vertical antenna for 6/2/70, and an MFJ loop antenna for 15-40m. Our extremely popular Slim Jim Antenna is now available for the VHF 150 - 160 MHz band. Just try to get the thinner walled PVC pipe as opposed to the thick stuff. Dual Band Dipole 2m / 70cm Vertical Dipole Antenna with mast and flush mount Collinear vertical antenna design question slim jim antenna (basic design) 2 meter copper tubing slim jim by ke5fxu (more slim jims below) 2 meter 2bcx slim jim antenna 5 inches tall, but features a super-strong rare earth magnetic base pre-wired with 9ft of RG174. the contents of your shopping cart 0 items value: 0. Mr HamTastic! Forum Veteran; Posts: 13105;. Collinear J antenna. 440 Mhz J-Pole Antenna plans. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids!. 0; 727-336-0665. 95 + $6. Our extremely popular Slim Jim Antenna is now available for the VHF 150 - 160 MHz band. deluxe model roll up 2m/70cm roll up j-pole/slim jim antenna with 10ft coax. In fact there are several, concerning their properties, how they’re made and their applications. 35cm) long. 1,737 Posts. This looks like a modified J pole. It’s acts just like a vertical folded dipole no more no less. The PVC. The whole thing. the pipe to pass the end of the wire. I had a lot of trouble programming it but that is another story! Construction of the 2 Meter Copper Slim Jim Antenna (Slim Jim details here). CONSTRUCTION: ============= The Slim Jim should be constructed from 1/2" copper pipe. Suspecting a problem with either the 1/4 wave stub or the feed line, I rebuilt the matching stub after visiting the coax manufacturer’s website, finding the specifications for. Antenna is housed in a 10' length of 3/4" 200 psi PVC pipe. A calculator for constructing a J-pole or Slim Jim antenna. A magnifying glass. If you use some good heat shrink tubing with adhesive liner on all the connections to the twin lead and over the cutout it should be ok for use in the elements. Coils and traps add losses to the. The coil system easily installs between the antenna's end cap and the current antenna wire system. Logged Carl. The construction of the antenna would be 1/2 copper pipe. Rigid mounting Enter the Dual Band Slim Jim Resonance on 2m Though you may be tempted to insert the antenna into pvc or other plastic pipe. This page shows you how to make a simple but effective 'Slim Jim' antennaSlim Jim' antenna. CONVERTING A 2 METER J POLE INTO A SLIM JIM ANTENNA. Easily made from. Antenna Mast; Tape Measure Yagi Beam; Ribbon Antenna; Slim Jim J-Pole Antenna // Antenna Mast. They are tuned for that and results without the pipe may be different. The DBJ-1 called for mounting the antenna inside of 3/4" 200 psi PVC pipe which has a thinner wall thickness than Schedule 40 PVC. This looks like a modified J pole. or the fence rail. The Slim Jim / J-Pole is essentially just a halfwave, endfed via a. Good catch ALKVA!. White pipe is composed of poly-vinyl chloride, hence the desig. Title: Pacificon 2002 Ed Fong WB6IQN VHF-UHF J-pole Antenna Author: Edison Fong Last modified by: Fong Family Created Date: 10/15/2002 4:51:26 AM Document presentation format:. Again, keep it away from conductive objects a minimum of 20 inches from the bottom. The other piece of PVC should be cut to 7 inches. Again, keep it away from conductive objects a minimum of 20 inches from the bottom. 2m Slim Jim. (The same type used for TV antenna. good quality for both mentioned. I have built a J-Pole antenna cut to 161. www rubmaps ch
Rollup Slim Jim antenna. . Slim jim antenna in pvc pipe
a design for a 2m Slim Jim and a number of new commercial antenna reviews. Mikejo said: If your antenna is a telescoping one, you can use this. Answer this question. The exceptionally handy role-up ladder-line examples aside, the copper pipe 2BCX Slim Jim antenna uses more materials to accomplish the same . M0UKD's page says: "It is recommended to use some sort of choke at the feedpoint. See more ideas about ham radio antenna, ham radio, radio antenna. 220 J-pole that fits in a PVC pipe. Tags A clip to mount a 40mm PVC pipe to a wall (no scr. 3/4 ″ THD Dome Cap. Homebrew 20 Meter DiPole Antenna-speaker wire. New posts Search forums. This page shows you how to make a simple but effective 'Slim Jim' antennaSlim Jim' antenna. Covers most of the basics. Several people have asked what's inside the PVC radome of the "Slim Jim" style antennas we deliver with the TeleLCO component of our TeleLaunch wireless launch control system. Again, keep it away from conductive objects a minimum of 20 inches from the bottom. Gary CTx104 is the king of making the antenna T2LT and although I've featured it long time ago now is the time to re-show the antenna and his video on how to make it. Radials are bent but still solid. but clear of. However, keep in mind that a high-gain antenna pattern has narrow elevation angle. In stock. 8 or No. Enter Frequency (MHz) The Slim Jim antenna is an extended version of the J-Pole antenna, using the same matching stub principle. Mar 29, 2017 - N6CC PVC Dipole Center Insulator Assembly. Flower Pot Antenna Calculator. consists of around 9 close turns of the coaxial cable around a 40mm former (pvc pipe etc), or taped up and hung freely. US patent 8,947,313 ½ l 1/4 l Splice and short together Approx. This calculator can be used to design a Slim Jim or a J Pole antenna. Start with a good quality 1/4 wave antenna on an NMO mount. deluxe model roll up 2m/70cm roll up j-pole/slim jim antenna with 10ft coax. But then you would also need longer a longer antenna lead wire. ) It is very easy to build and does not take days to construct. This means our Slim Jm is optimized for VHF Public Safety, MURS, Marine band, and Business frequencies. Unless you really need the height, 20' on a chimney mount, well I don't know. This was an article by the designer F C Judd G28CX in Gngland. But most importantly, I’m trying to determine the antenna system configuration for a 2m Slim Jim or J-pole (treated as balanced “dipoles in disguise”?) assuming I can protect the LL all the way to the feed point. ½ feet which is a practical length for a ¾ inch 200 psi PVC pipe. 25 ต. 32937685459941 by 2 to get a 1/4 wave antenna length. Abandoned Castles. Maximum power input 50 watts. I would appreciate getting a copy of WB5MAJ project pdf. 50 ohm points RG174a. six flags shooting today. Antenna Trailer Hitch Mount for Ham Radio 5/8" Ant Hole Stainless Sold by W5SWL. x 10 ft. 26th June 2016 at 10:35 pm. attached the Slim Jim antenna to the PVC pipe using the bottom crossover section and the green/blue spacer on the shortest section with self tapping screws. Once I got my Slim Jim antenna hooked up I was able to access this repeater easily with my little 4 watt UV-5RA. Dual Band Dipole 2m / 70cm Vertical Dipole Antenna with mast and flush mount Collinear vertical antenna design question slim jim antenna (basic design) 2 meter copper tubing slim jim by ke5fxu (more slim jims below) 2 meter 2bcx slim jim antenna 5 inches tall, but features a super-strong rare earth magnetic base pre-wired with 9ft of RG174. the distant 2 meter repeaters will be stronger on my brand new Icom IC-V8000. The DL6WU yagi is highly regarded as being easy to build with repeatable results, broad. ½ feet which is a practical length for a ¾ inch 200 psi PVC pipe. In the copper pipe variation, the Slim Jim uses more materials for no performance benefit but since the ladder transmission lines are hard to source in India I went with the copper pipe variation. Slim-Jim is easy to built, no radial 145Mhz antenna. The 700 series Ultraflow® valve leads the industry in long-term performance and reliability. 600-PSI White Schedule 40 PVC Pressure Plain End Pipe. "The NEC requires that the antenna mast and mount be grounded directly. Both of these holes will hold the copper wire. The pipe provides the structure and spacer. CONSTRUCTION: ===== The Slim Jim should be constructed from 1/2" copper pipe. Plus one section of non-conductive material (dark color in picture). or the fence rail. Dotted lines are wires inside Feed Line. This antenna is ideally suited for the new triband radios from China. 2m Slim Jim. The Hex-Beam antenna contains 6 sets of wires providing a two-element directional antenna covering the 20M, 17M, 15M, 12M, 10M, and 6M Amateur Radio Bands. 144/440 roll-up J-pole that can be hung from multiple locations and comes with several connectors. 5db of gain. Plus one section of non-conductive material (dark color in picture). Below is a trial by jury!. Above: This is my NORTH 160-Meter loop antenna. The measurements above are not extremly critical but may have to be lengthened or shortened for your particular operating frequency. Mikejo said: If your antenna is a telescoping one, you can use this. Many experimenters have found that the dipole as short as ¼ wavelength can be efficient if the RF can be matched properly to the antenna. A standard ground plane of some flavor. I've compared the aerials results with the Evokes own telescopic and the 3 element yagi (home made) described elsewhere on this thread. (34-3/4” & 15”) Remove the wire between the cuts. 5 metres long, and 70cm (433MHz) will be 0. Coordinate with other PVC pipe and fittings. Title: Pacificon 2002 Ed Fong WB6IQN VHF-UHF J-pole Antenna Author: Edison Fong Last modified by: Fong Family Created Date: 10/15/2002 4:51:26 AM Document presentation format:. Roanoke VA (~75 mi) and Garner/Clayton NC (~65 mi). Slim jim antenna in pvc pipe. This makes them perfect for stealth antenna operation, if mounted correctly or directly in pseudo drainage pipe, no one will know there is an antenna. The advice on chokes for the Slim Jim antenna is to put it close to the feed point on the antenna with 3-4 turns. Technically, the "J" antenna is an end-fed ½ λ antenna that uses a ¼ λ matching stub. Plus one section of non-conductive material (dark color in picture). Antenna is housed in a 10' length of 3/4" 200 psi PVC pipe. I guess it depends on what antenna is going up. But then you would also need longer a longer antenna lead wire. chevy 5500 4x4 pinstack plano;. Slim-Jim is easy to built, no radial 145Mhz antenna. Search: Gmrs Slim Jim Antenna. Rigid mounting Enter the Dual Band Slim Jim Resonance on 2m Though you may be tempted to insert the antenna into pvc or other plastic pipe. In stock. CONSTRUCTION: ===== The Slim Jim should be constructed from 1/2" copper pipe. Some other tuners will only allow 1x1meter, but a replacement of the standard 15x15cm loop is a good idea! And PVC pipes of 3m only cost 80 cents. 00 shipping + $6. The construction in brief is a wire wrapped around a 20mm tube with a bottom gap. The Hex-Beam antenna contains 6 sets of wires providing a two-element directional antenna covering the 20M, 17M, 15M, 12M, 10M, and 6M Amateur Radio Bands. this is the internal pvc carrier with the antenna wire wrapped around it and the pigtail goes up through the bottom and comes out at the cutout futher up the. Cut 12” of Kite string and tie off. The name Slim JIM was derived from the J-Pole but improved by the developer of the antenna. The PVC pipe I had on hand was 2" diameter but as. Page / 3. Fergus is trade management software for trade businesses. I've compared the aerials results with the Evokes own telescopic and the 3 element yagi (home made) described elsewhere on this thread. we only sell this antenna with the pvc pipe C572 Task 3 Multi Band Radio The 6-40. DJ11DLN Member Joined Mar 23, 2013 Messages 2,068 Location. 75 METERS = 57. In some cases, antenna design is still as. Part list: 1 - PVC pipe 1-2" in diameter and 12" or so long 70MHz Quarter Wave Ground Plane Antenna Best bet is a Yagi enclosed in a plastic pipe, lots are available to buy, but a Yagi is a Yagi "After several attempts to Universal DIY Carbon VHF Yagi Antenna 1 A small TV aerial UDA YAGI: 2m and 70cm Colinear Flowerpot antenna/A> 2m-70cm. As with any balanced feed antenna, this will prevent the braid of the coaxial cable from radiating, and becoming part of the antenna, and therefore affecting SWR. I guess it depends on what antenna is going up. Edison Fong PVC pipe 2m/440 omni antenna: 41: 2022-01-02: 22 (4. 3/4 ″ adapter 8xMPT. 1 1/4 or 1 1/2 may be appropriate. Slim Jim, by his definition, is any half-wave dipole antenna fed with a quarter-wave stub with the feedline across a portion of the stub to find an optimal impedance - this includes the traditional J-pole, Zepp, etc. As shown in the picture make a hole (just enough to put the no 20 copper wire) across the PVC pipe from the one end of it. This page shows you how to make a simple but effective 'Slim Jim' antennaSlim Jim' antenna. Suspecting a problem with either the 1/4 wave stub or the feed line, I rebuilt the matching stub after visiting the coax manufacturer’s website, finding the specifications for. Shares: 307. The kind of antenna we provide is called a "Slim Jim" in the amateur radio world, it's a variation on a class of antennas often referred to as "J-Pole" antennas. Wind 7-10 loops of coax around a 3/4" diameter PVC pipe and wrap the coil in electrical tape to hold it in place. HF-VHF-UHF Antennas and Accessories. This makes them perfect for stealth antenna operation, if mounted correctly or directly in pseudo drainage pipe, no one will know there is an antenna. This is a simple base station CB antenna You can make in 30 minutes out of a bit of PVC pipe and fittings, some wire and a SO239 coax connector and a piece of coax to. Box 56, Eagleville, TN 37060 615-656-8607 (TNØ7). 49” 36” Prototype was made of 1/2 inch copper pipe. Slim Jim Antenna 3 Meter Slim-Jim Antenna (JIM = J Intergrated Match). However, keep in mind that a high-gain antenna pattern has narrow elevation angle. The 40M coil is shown in Figure 4 and the 80M coil is shown in Figure 5. the Slim Jim antenna is used to mount the antenna to a 10 foot piece of PVC pipe at final installation by attaching self tapping screws thru each one. 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