Copper tubing cb antenna

Another version of the quadrifilar helix. SMALL HF MAG-LOOP ANTENNA TUNER ( For 40m-17m Bands) The Slim Jim should be constructed from 1/2″ copper pipe. 3,000-Watt CB antenna Best CB Antenna for Truck 1. This plastic tee inside diameter matches the outside diameter of 1/2” copper pipe. archive. IMAX 2000 CB Antenna Comparison. Wide range of aluminum tubing available. We already published in the 9 J-pole-antenna-projects some samples of copper J-Pole antennas. Here we have collected some links to building instructions for 11m antennas on the http://cb-antennas. I also used the center supporting pipes this time, and triple-checked every measurement on the antenna. Also old tv antenna elements or aluminium tubing could be used with some ingenuity and would be lighter. The whole antenna is held together by two lamp tubing nuts and a plastic lamp fin-ial, also readily available at hardware stores (see Figure 2). 1/2" aluminum tube vs 1/2" copper tube? I know that length and diameter have an effect on resonance and impedance, but does the particular metal? My question is specifically about element length vs type of metal element. To connect the antenna to ground, simply connect the other end of your ground wire to coaxial grounding Alibaba. For Makes: Bandit, Cb, Hp, Dx, Fm They were bonded in the center by a 1/2" x 1' PVC tube inside the 3/4" aluminum tube, and a 3/4" x 1' PVC tube outside the 3/4" aluminum tube. How to Make a Homemade TV Antenna (Explained With Pictures) PVC pipe or stick to hoist the antenna (optional) pattern the copper wires as shown above. You want to be sure to get a solid copper wire, as stranded wire can become brittle over time. 11-meter-cb-antennas. Made with a stainless steel whip and a stainless steel shaft this Browning BR-28 High-Performance Broad Band 63 CB Antenna includes a standard thread CB mount to allow for easy mounting. Both clamp assemblies are the same. About 57% of these are antennas for communications, 1% are telecom parts, and 1% are tv antenna. You need 2 peaces of "SOFT" copper tubing 42" long each! Soft copper comes in a role and you buy it buy the foot. FireStik has some of the most reliable fiberglass CB antennas out there and a great example is the FL3-B, a three-foot Firefly antenna with tunable tip. Experimentation with heavy gauge wire supported inside PVC tubing or attached to insulated material such as wood could also be tried and would probably be successful with some The antenna is constructed using 1/2” copper pipe and copper fittings. The mechanical properties make the use of the center supports unnecessary. 090" including 0. MFJ or other make Antenna Analyzer How to Solder Copper Pipe Let me start out by saying I am not a plumber and am sort of self taught in the area of copper soldering. I want to build my own base antenna just to do it. So I basically just cut a piece of wire to that length. First, some notes on cutting copper pipe. Copper Electronics, Inc Antenna elements are 1/2 inch copper tubeI started with two sections of copper tubing 6' long purchased from Lowe's. 50 charge for shipments that exceed 48" in length. Aluminum antenna wire is hard to work with, has a very easy breaking point, and oft times, stretches out of shape, and cannot be soldered using conventional solder. So, inductors are easy. However I made my loop square because I thought it was easier to assemble with heavy copper pipe and pipe elbows used for household water distribution. At the end near the connector, a piece of RG59 coax center conductor is slipped inside a piece of brass tubing which telescopes into the 1/4 inch copper tube. However, copper is expensive and some-what heavy, so most hams limit the diameter to 1” or below. This unique design means Wilson antennas will last and last in the most rugged of travel… no matter where you use them. Copper house wire prices have skyrocketed in the recent months. Preferably very very cheap ones, and I guess I need a number of values. That said this is what I'm thinking: copper pipe in progressive sizes so they slide into each other for adjustment purposes with 4 ground radials of 3/8 copper pipe at 1/4 wave length set at 45-60 degrees. When mobile, I installed a Tram 1185 mag-mount antenna (which also works well, especially with the new FTM-100DR!). The citizen band radio or CB radio can be generally defined as a public two-way radio, there exist several classifications of this device but the best-known form is the voice communications which came into existence in the 1970s. For the 5/8ƛ I closed the gap, and tied them together on the outside of the PVC tubes by use of metal Duct tape, and copper wire between self-drilling screws. Copper pipe turned out to be pretty hard for me to work with, so I switched to 12 gauge copper wiring instead. If you make the  Aug 23, 2011 This is a cheap and dirty CB Base antenna that you can build in an Hour, and then wrap it with some small cooper wire, and solder the copper wire Now take the Braid Tube and slide it over the other end of the coax, until  There are times when you may need more gain than the standard J-Pole antenna . Note that a lamp tubing nut is also required inside the copper pipe cap. I wanted something a little more substantial, though, for when operating at my primary/secondary QTHs. Mobile CB Antennas Mobile Antenna Mounts Mobile CB Antenna Accessories Base CB Antennas Base CB Antenna Accessories. Creating A Balun: The QFH antenna is a balanced antenna design, however coax cable is unbalanced. 97 metre square with 3/4 inch copper tube obtained from the local plumber. Find great deals on eBay for copper antenna wire. Solder is "hard" silver solder, not plumbing type silver solder. org/web/20091027082648/http://www. SWL GRUNGE-MASTER . so we could see the actual antenna inside (scroll down to see pictures). nylon Short Flexible wire tails 2. 99 (5 offers) - Buy Workman Electronics BANDIT-2 Antenna Base Antron Ssb Thicker Copper Radiator . It's a 5-element cubical quad that uses #14 copper wire supported by PVC or ABS pipe. There is actually a middle phasing section, the brings both 5/8 wave elements in phase electrically. diagram of all-copper J-Pole antenna. I also use from 6 gauge "copper" wire to 1/2" copper tubing for the coil matching system, which increases the coil's Q,  Dec 1, 2014 For the counterpoise I used a piece of 1/2" copper tubing, 102" long, and antenna to get it down to 2:1 or less. The dipole was separated by 1" of space. I connect copper flashing to my ground rods, which are really 1" copper pipe, by using a step-drill to make a 1" hole. I have heavy gauge wire straight down to copper ground rods bonded to house's electric ground. In the copper pipe variation, the Slim Jim uses more materials for no  Figure 1 shows the most basic form of radio antenna ground. Best CB Radio Antenna. Most CB antennas are vertical. Typically, magnetic loop antennas can be built from coaxial cable, hardline, or solid copper or aluminum tubing or ribbon. Alibaba. a guy that does electrical work said not to use copper for an antenna because it attracts lighting much more than aluminum because its much more electrically conductive . They typically use between 14-16 gauge copper wire for "both" the antenna and matching coil thats The Antenna Farm : VHF Omni Directional - VHF & UHF Mobile Radios Radio Accessories VHF & UHF Hand Held Radios Antennas Mobile Antenna Mounts SWR/Power Meters Adapters Coaxial Cable Two Way Accessories Antenna Accessories DC Power Supplies Coax Cable Accessories Amplifiers Connectors Aviation Radios Repeater Systems Towers & Accessories Scanners & Receivers Duplexers Diplexers & Triplexers VHF But my old CB base antenna I had is long gone and I had always wanted to see 1 - 3/8" x 10' hard copper pipe (Cut it in half to make 2 - 5ft radials); 1 - 1/2" x  How to build a J-pole antenna for the 11 meter CB radio band. Buy On Amazon. The SIMPLE 2m Copper 'J' Antenna : by KB9VBR on September 18, 2001 : Mail this to a friend! The J is a great antenna. Notes: The J-pole antenna is a half wave radiator fed by an included 1/4 wave matching section. 2 Meter Slim Jim Copper Tubing Antenna by I build these all the time and I use one now and then Qrp Ham Radio Antenna Cb Radio Truck Radio Kit Hf Radio Radios Car Pictures of the copper tubing version. . The larger the tubing diameter, the less resistance and the MORE efficient that antenna is. They will be trimmed again later to I've recently picked up some 6' and 7' pieces of 1" copper pipe and thought I'd make a copper 2M j-pole antenna with it. Brand New. x 24 thread mounting. Make from wire, copper tubing, or cut a CB whip. long side 56 1/2 " - 1 each 1/2 wave 36 1/4 " - 1 each 1/4 wave 18 1/4 " -1 each With this Browning antenna you can enjoy 10000W of power to ensure a wide range of reception. You need an antenna and the experts at Solid Signal are here to make sure you get the right one. 625 The diagram for the $150 SIRIO Gain-Master 5/8 wave CB radio base station antenna is on the antenna's brochure. This loop is usually made from copper tubing with a tubing diameter as small as ½”, up to an inch in diameter. The Antron 99 and the IMAX 2000 are known to be excellent Antennas for CB Radios, and copper is a great RF conductor, but they can be made to perform much better. At B, detail of clamp assemblies. The gamma match is 1/4 inch copper tubing. You may also substitute copper or aluminum wire for the aluminum tubing. CB antenna sometimes CANT,the same as my other homebrew wire . $39. So, I decided that a pair of dual-band copper pipe j-pole antennas were in my future. pipes. A CB has a maximum legal broadcast strength of around four miles, though the signal is subject to interference based on obstacles and the lay of the land. FireStik FL3-B Three Foot FireFly Antenna With Tuneable Tip. 11m Antenna Building Instructions on the Internet Band Mid-West — Fabricating CB Antennas, no/bm/Antenna%20wires1. It is then soldered to the connector. e. We have more details about Detail, Specification, Customer Reviews and Comparison Price. MFJ-18G100 14 Ga Copper Stranded Antenna Wire - 100 ft. The below image shows a simple wiring diagram for the QFH antenna, make your connections as per this diagram, remembering to drill an additional hole in the side of the central support to allow the cable to easily pass through. While all the designs performed well, each had shortcomings. 1 product rating - philmore 15-630 copper antenna wire 50 ft 14 awg pure copper, for ham radio $23. Jul 3, 2012 All of my J-Pole and Slim Jim antennas are constructed out of Type-M hard copper tubing. All joints are soldered with rosin core solder. This one was constructed using copper (gas) tubing, of 8mm diameter (5/16"?). The center section utilizes a 1/2” NIBCO CPVC SxSxS Tee purchased at Home Depot. Whether it’s a TV, radio, or cellular antenna, we have what you need for your home or commercial application. It takes a MAP gas torch to melt real silver solder. id attach it to a 10 ft pipe and attach the pipe to the tree with a coax choke at the feed-point . The copper pipe J-Pole matching section would be exposed to the The DBJ-1: A VHF-UHF Dual-Band J-Pole Searching for an inexpensive, high-performance dual-band base antenna for VHF and UHF? 8 inch hole in the center top of the copper and the CPVC caps for the lamp tubing to pass through. Copper pipe sanding material 9. HI all, This is my 1st post here as I'm new, and I have a question about CB radio antenna grounding that perplexes me. A copper TV antenna? Well, copper is commonly used in some consumer electronics products, but that’s not the point. Mobile CB Antennas (71) · Mobile Antenna Mounts (21) · Mobile CB Antenna Accessories (6) · Base CB Antennas  The J-pole antenna, more properly known as the J antenna, was first invented by Hans . The best of the rugged, stranded, coated antenna wires (CQ 531) now has a new brother, CQ 532, with 18AWG (OD 0. stainless steel tapered whip. Item Qty Part or Material Name 113/ 4 inch × 10 ft length of rigid copper tubing (enough for 2 antennas, 60 inches per antenna) 211/ 2 inch × 10 ft length of rigid copper tubing (enough for 6 antennas, 20 inches per antenna) 323/ 4 inch Copper tubing. This feature is not available right now. Copper tubing is used instead of copper wire because it has a much lower resistance. Jul 9, 2016 Make your own copper cactus antenna, a collection of 13 copper cactus antenna projects based on The simple 144/440 copper pipe J. com by 19SD348 & 30DA016 contains tube. The wavelength of the 27-MHz CB band is a little over 17 feet, or 204 inches; to send and receive CB, use two halves of this standing wavelength, or two 102-inch lengths of copper wire. CB Antennas. I used the following parts to assemble the antenna. Copper is used instead of aluminum where a reliable electrical contact is needed. Lighting is a big issue. Howdy folks. So it seems like 3/4" copper tubing (type L) slipped into 5/8" copper tubing with an air dielectric has a capacitance of 30pF per inch and a breakdown voltage of 1300V, ballpark in the *ideal BUILDING COPPER PIPE ANTENNAS When building the antenna, cut the four main element pipes per the final overall lengths shown in the drawing. Tubing for Maco and Gizmotchy antennas available by part number! Find tubing for other antennas, homebrews, or other projects. he said thats why copper is used for ground rods and lightning rods and ground wires . About 23% of these are communication cables, 20% are antennas for communications, and 1% are tv antenna. pdf Is copper really better than iron 7. com/ CB-antennas. I personally used a 6 AWG solid copper wire and clamped it to my house ground wire as seen in the picture below. Connect the Antenna to Ground. Whip Antenna CB Morris Products Direct Burial Copper Ground Pipe Clamps – For Connecting Grounding Electrodes to Water Pipes, Tubing, Ground Rods – 2-10 Wire Range, 1-1/4-2” Water Pipe Range, 5/16-18 Screw Thread I decided to try and build one of the copper pile style slim jim 2 meter HAM radio antennas. 29 Since outdoor directional FM antennas seem to be no longer available and aluminum tubing has become expensive, I've designed an antenna you can make from cheap materials available at your local hardware store. Copper pipe sanding brush 8. in vice & 6mm hole drilled in each end 6 . m . Why Copper This calculator can be used to design a Slim Jim or a J Pole antenna. My J-Pole antennas are constructed out of Type M solid copper pipe for the ultimate in durability and weather resistance. The antenna is for FM voice, and, the movement is minimal and pretty rare. Installing a radio or TV antenna can eliminate the need for cable or satellite television service. Testing was another matter I don't know if we had bad cable, a bad analyzer Aluminum antenna wire is hard to work with, has a very easy breaking point, and oft times, stretches out of shape, and cannot be soldered using conventional solder. I need capacitors. http://web. A half wave radiator fed at one end presents a very high feedpoint impedance, at least several thousand ohms. Copper tube flattened . Aluminum wire is not expensive, but it is the least desirable wire for antenna use. The bottom element is almost a standard J Pole, the middle section is a run of ?” copper pipe and the top section is #6 copper wire that is encased in 1/2” PVC. figurations constructed from copper pipe, 450 Ω ladder line, and aluminum rod. Many old antennas do not receive the new digital signals, but you can build one that can. mm Nut & Bolt Insulating spacer . Wilson CB antennas offer silver-plated copper wire for superior power and the broadband antenna allows for easy tuning. This both doubles the collinear's gain and improves the antennas pattern with an improved low angle of radiation. A length the antenna happy or b) make the radio happy. I don't expect any miracles, in fact failure on the first few tries. tall with a 33 in. A wide variety of wifi copper antenna options are available to you, such as free samples, paid samples. A cutter that can handle up to 3/4 in. The combination of your design with Eikland and Larson's "Copper Pipe J-Pole Antennas" would be just amazing on 70m. I've got 500 feet of #10 copper wire. Not hard to build at all. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim  My J-Pole antennas are constructed out of Type M solid copper pipe for the ultimate in This would include antennas for short wave, hf, 10 meter or CB radios. Why build antennas out of copper and not aluminum or stainless steel. I drive the pipe through the flashing hole, and fill the dimpled area with solder. 3 April 2009. I want recommend that you check the price To get a cheap price or great deal. DUBRO DUBROC2344 ANTENNA TUBING BULK 24PCS PURPLE * 2x 150mm 2. 020" jacket. How to Build Antennas. A $6. Thus it is about 3/4 wave tall at the operating frequency. Copper tubing. on a typical CB antenna you'd  Nov 18, 2018 My homebrew copper pipe dipole is suspended from the attic rafters . kongsfjord. Please try again later. While I haven't built this particular J-Pole, I've constructed several using similiar plans. Choose Tram for your next antenna installation project and stay connected with this High-Power 3,000-Watt CB Antenna with 16 in. Sliding the brass tube in and out over the small exposed piece of the coax center tunes the gamma match. http://www. Experimentation with heavy gauge wire supported inside PVC tubing or attached to insulated material such as wood could also be tried and would probably be successful with some A good article, and proof that an effective antenna does not have to be something purchased for a high price. 0445") "Silky" 40% copper-clad steel conductor (Nominal OD, 0. Refine Search. While there is an argument that copper tubing makes a better ground than rods, they. Inside the fiberglass shell of the Gain-Master 5/8 wave base antenna is a ham radio 'Flower Pot' like antenna design, that is constructed from high quality coaxial cable and wire. You can get all of the sections for the Copper Slim Jim antenna from these with very little waste. The Copper Cactus J pole antenna design is a simple amateur radio antenna model that will allow you to operate both bands A copper TV antenna? Well, copper is commonly used in some consumer electronics products, but that’s not the point. A good pair of leather gloves (highly recommended) 10. Bottom Load Heavy-Duty Copper Coil. Build a Long Range Antenna for $20 so I took the opportunity to try out some new ideas on a second version — a conduit and plastic-pipe model. I HAVE been tempted to make a loop using FOUR INCH copper tubing, but I think it’s better to use the money to feed my family for a month instead. A copper pipe J-Pole antenna is a single band antenna that is much like a The copper pipe driven loop was much more robust than the wire loop, but was more difficult and time consuming to construct and alter. no/bm/Antenna%20wires1. This is because CB's are most commonly used to communicate with mobile units, and in a vehicle, it's much more convenient to use a vertical antenna. Since its radiation resistance is low and circulating current large, the loop must be constructed of a low resistance large outer diameter conductor for best efficiency. With no real advantages to the performance of the antenna, I decided to opt for the wire loop version, especially during the prototype phases. But fear not! In the article below, we'll recommend what we consider to be the best CB antennas on the market today as well as explain the fundamental principles you need to understand to pick the right antenna. I've built a couple of these antennas using 1/2" copper pipe and the results have been quite good (35' AGL helps alot). Also perfect for Ham radio use, this antenna is a total of 47 in. I like to experiment with antennas and have built many dipoles for the various bands. For folks who are trying to find @ Cb Tube Formula Madimmarketing review. The elements are phased with #6 copper wire and held in place by compression couplings. 99 to $89. So if you want to communicate with existing CB's, or with CB's in a vehicle, then it's best to orient your antenna vertically--running up and down. A Copper Pipe Jpole for Two Meters. Mark you could use copper pipe but you need to consider the extreme weight you'll have. AC Power Cords Alternators Antenna Mounts & Connectors Antennas - Antenna Connectors - Base Antennas - Maco Antennas - Mobile Antennas Board & Sink (BS) Packs Cabinets Cable Capacitors CB Radios CBS Packs Chimney - AC Teflon (TFE) Circuit Boards Circuit Breakers Coax Cable Combiners Connectors Copper Lugs Diodes Dummy Loads Elements/Slugs Pictures of the copper tubing version. 50' long antenna, but rather two 5/8 wave CB base antennas stacked on top of each other. All of my J-Pole and Slim Jim antennas are constructed out of Type-M hard copper tubing. The best way to cut copper pipe is with a wheel-type tubing cutter. A wide variety of copper tube antenna options are available to you, such as straight copper pipe, pancake coil copper pipe. Cost was under $25. As mentioned by previous poster, copper clad steel (CCS) wire is popular for antennas, skin effect confines RF current to copper. An SO-239 connector is soldered onto the antenna at the point of lowest SWR. Best CB Antenna for Truck 1. Shop with confidence. 87 25 Foot 5 Band HF Vertical "The Wonder Stick" A good working hf vertical for the price of a hamburger and fries! by N5VEG. With hundred of antennas on the market, it can be overwhelming trying to determine which one is best for your vehicle. 15mm diameter copper water pipe ( half of loop) Graphics by G8ODE iss 1. I've got an old Realistic Navajo base station that seems to work ok, as it's one of the newer models in black plastic, a TRC-433 (not the old wood grain ones), and I've also got a Cobra mobile CB radio, model 18 WX ST II, and all I have for now is a crappy magnet mount helical The Slim Jim should be constructed from 1/2″ copper pipe. thick perspex or . Type-M, also known as Red Copper is primarily used in the plumbing industry for supplying drinking water in homes and businesses. pipe is inexpensive and worth purchasing at a home improvement store Copper pipe can also be cut with a fine-tooth hack saw. A few years back, I built a similar 1/4-wave vertical for 17m out of a couple of lengths of copper pipe topped by a steel CB whip antenna. Bending the copper tubing isn't that easy, particularly if one doesn't own the right tools (like me). For example electrically small loop antenna made resonant with lumped components at the feedpoint are sometimes built out of 1/2 inch copper plumbing pipe and still have low radiation efficiency due to copper losses. Type-M, also known as Red Copper is primarily used  CB Antennas. This antenna has a 3/8 in. This antenna is a reasonably portable three element Yagi-Uda for Field Day use. LFA Yagi Antenna in Copper. was at lowes yesterday looking at copper pipe for antenna use . 5:1 or better over the entire band. The loop was made up 0. 11 METER CB ANTENNAS. This group of antenna wire, including the CQ 534 26AWG "stealth," is the most popular addition in this field in years! Break strength 125 lbs Wide range of aluminum tubing available. Here a collection of links to make you own dual band VHF UHF copper cactus antenna. 75 Trending price is based on prices over last 90 days. 3. 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. This page documents a build of a 2-element 1/2 wave collinear J-Pole performed by Harry, KC9EOT, and myself, KB8OJH. 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. A better choice might be aluminum tubing but it will still be very heavy for the antenna you mention. Copper pipe is ok for many vhf/uhf, some vhf-low(6 meters) and a few 10 meter antennas. Making your own CB mobile antenna requires a basic understanding of the frequency used by CB send and receive radios. com offers 508 copper tube antenna products. Add me to the list of people that would love to see this modeled for the 70 cm band. Figure 2 Loop Assembly. If you have a CB antenna but are not receiving much of a signal, there are several methods for increasing the range at which you can communicate. pdf Is copper really better  For general information on constructing a copper pipe J-Pole, see The ARRL for a mobile 1/2 wave collinear J-Pole constructed from a CB whip and stainless  Apr 17, 2014 a) the antenna or b) the radio? 3. com offers 1,714 wifi copper antenna products. com . Related Post: Why build antennas out of copper and not aluminum or stainless steel. SMALL HF MAG-LOOP ANTENNA TUNER ( For 40m-17m Bands) Then I went to go build another antenna. Item Qty Part or Material Name 113/ 4 inch × 10 ft length of rigid copper tubing (enough for 2 antennas, 60 inches per antenna) 211/ 2 inch × 10 ft length of rigid copper tubing (enough for 6 antennas, 20 inches per antenna) 323/ 4 inch Then I went to go build another antenna. Mobile CB Antennas Mobile Antenna Mounts Mobile CB Antenna Accessories Base CB Antennas Base CB Antenna CB Antennas. I just used standard 14 Gauge solid copper wire from Home Depot. Does the particular metal used in antenna elements make any difference in element length or spacing, i. Please note that UPS applies an additional $10. Davis RF WM523 - 14AWG 19 Strand Hard Drawn Copper Clad Steel Antenna Wire - TINNED Davis RF CW12 - 12 Gauge Copper Weld Antenna Wire - Copper Clad Steel List Price: $0. Base CB Antennas Copper Electronics, Inc After building this antenna I am happy to say that it is a great project and works as promised. So, yet again, another trade off decision must be made here. we got by with bare copper-stranded "radio When mobile, I installed a Tram 1185 mag-mount antenna (which also works well, especially with the new FTM-100DR!). I've had an antenna in a tree for about 5 years and never experienced any movement related issues whatsoever. Because of skin effect, the resistance of the tubing or wire depends on the surface area of the conductor and tubing has a much greater surface area than wire, for the same length. if you want to provide earth ground for it you'll need a run of heavy gauge copper wire long enough to reach the rod . Copper Pipe J-Pole Antennas By Rory Eikland, KG6HCU and Ken Larson, KJ6RZ Rory and I have had excellent experience building and using J-Pole antennas constructed from 1/2 inch ridged copper pipe, so we decided that we would share our experiences. Wilson offers CB antennas, studs, CB antenna mounts, cables and other accessories to meet all your needs. 90 Trending at $28. 4G Receiver Antenna Aerial 3DB w/Copper Tube IPX13 Plug for Frsky BR Whip Antenna CB Radio Maco® Antenna Tubing If you are unsure of part numbers, all instruction manuals & parts lists for Maco® antennas are available here. This is a photo album showing various steps I took in preparing 1/2 inch copper pipe for my version of the G0KSC Loop Fed Array (LFA) Yagi-Uda antenna. @ Cb Tube Formula Madimmarketing On Sale . geocities. copper tubing cb antenna

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