40 Meter Traps
40/20 trap dipole. These Spectrum Lite Trap Inverted-L Aerials are essentially half a trap dipole with the feedpoint at ground level. net Abstract A coaxial-cable trap dipole antenna installed in the attic provides a surprisingly effective solution to HF operation on the 10, 15, 20, 30, 40, and 80 meter amateur bands at a QTH with restrictive covenants that prohibit outside antennas. 40 & 80 meter trap dipole: 80 Meter Loading Coil: 80/40m Trap Dipole: 40M Triangular Full-Wave Vertical Loop Antenna, W5DXP: 160-80-40m TRAP Dipol Antenna, TA7KAP: 160/80/40 meter band trapped dipole, SM2YER: A trapped dipole for 80m and 40m using bootstrap coax traps: A Co-ax Trap Dipole For 40, 30 and 20 Meters, AA7EE: A 5 band trap antenna. The coil is a bit over kill to just run 200 watts through it, but it was given to me. With the AV-680, you get the same great traditional performance of the AV-640 on 6 through 40 Meters plus top-to-bottom capability on 80 and 75 Meters. Directed by Johannes Roberts. Cheers Max. If you multiply 40 x 40, you get 1600 square feet. China Bucket 50. It is approximately 110 feet in length and provides a relatively low SWR on these bands. Coaxial-Cable Trap Construction. Barney realized he had had enough fun for one night and decided to go home. The 80 meter band starts at 3. Visit your local hardware store to purchase a trap cage. I like to use a home made current choke to keep RF from coming back on the feedline. agprofessional. For 20 meters the coil self-resonates and presents a high impedance which shortens the wire to a 20 meter dipole. the lower HF bands with an outboard tuner, whereas other, tuned trap vertical antennas typically cover only 40 meters and some higher bands, but have little application, and typically no application on 160 meters. An Improved Multiband Trap Dipole Antenna QST July 1996, pp. how high for a inverted v dipole for 10 meter. As an example consider an 80/40 meter trap dipole. The Extech Instruments Division is a manufacturer and supplier of 15 major product categories of technically advanced, portable meters including multimeters, clamp meters, electrical testers, and environmental meters for the measurement of light, sound, temperature, humidity, airflow, RPMs, and water quality. Do not click the link. So I borrowed some trap details for the 30 and 40 meter traps that he used, and constructed some for my own use. Antenna performance and 2:1 VSWR bandwidth is site dependent and varies with height above ground and surrounding objects. The Antenna was modelled at 10m above the REAL Ground whose Conductivity=5mS/m and Dielectric = 13. Unfortunately, their SWR curve is low over only a small portion of the band. in my case: (crank up) tower for the first 10. HOW TO Before you start, bee sure that you know exactly where you would hang the dipol. The swr on 15 meters, using the 40 meter section for 15, may not be extremly low, but might be useable. Set the meter to read DC volts, and set it to the lowest range that will allow reading up to about 15 volts DC. 1mL; This product(s) resides on a Fisher Scientific GSA or VA contract. See figure I and frequency charts. Postage Stamp 40 Meter Antenna EZNEC model. Please note some adblockers will suppress the schematics as well as the advertisement so please disable if the schematic list is empty. Traps for different bands can be combined onto one dipole to create a single antenna tuned for maximum gain on all your favorite bands, from 160 to 10. Smith Corporate Technology Center. Unfollow ghostbusters trap to stop getting updates on your eBay Feed. Manufacturer of laser power & energy meters, as well as terahertz meters and beam profiling cameras. In case you are now in search of a reliable store, we suggest addressing carpenter bee traps at Home Depot and Lowe’s. This means the penis is 2. The inductance has an intrinsic resistance associated with it. But, for now. In addition, a trap-dipole will perform no better than a dipole, because that is what it is. The traps are constructed from plastic tubing and regular 50 ohm coaxial cable. The seal dimensions refer to the approximate depth of water trapped in the bend. 7 to 1 across the entire 80 meter band. Magnetic Loops from the Experts DJ3TZ G4FON N5IZU PY1AHD WD8PUO Helically Loaded Magnetic Loop Antenna Tower information TowerTalk Mailing List Archives Guyed Tower Topic Summary. The trap then goes in place and add about 21. • An 18 ft. If you are viewing this page as a nonregistered user, the price(s) displayed is List Price. My most recent antenna for top band was an odd shaped 160 meter full wave length loop. The characteristically high angle radiation pattern of a 25’ high 40 meter horizontal dipole antenna tends to limit distance contacts. That's over $29,000 per year in wasted energy costs for a plant operating 365 days a year. It has no adverse effect on inverted bucket operation other than to reduce its capacity by the low differential. 2 kJ/mole; a dislocation-based model  for the trap density is formulated (cf. in my case: (crank up) tower for the first 10. As with all trap dipoles, this one has less-than-ideal bandwidth due to the load- ing effect of the traps. On the lower band – 80 meters on the 40/80 meter antenna and 40 meters on the 30/40 meter antenna – the trap will act as an inductor and thus shorten the antenna/wire. A damaged drain line. 70, 80, 86 Float Ball Trap Valve - Wenzhou Sanlo International Trade Co. The aerial is fed via coax to a coupling box secured to an earth stake at the far end of the garden. Dit zijn natuurlijk mooie ronde getallen, een kamer van 6,54 meter bij 3,45 meter laat zich minder gemakkelijk berekenen. 20 Meter 133. The coil used is big enough to cover the 40 meter band as well. https://www. All rotatable dipoles listed below can be expanded to beams down the road with conversion kits. DX Engineering 300 ohm ladder line has a velocity factor (VF) of 0. com® has been serving the entire Internet community. Search this site. (Heinrich Hertz was the first to build a radio transmitter and receiver while understanding what he was doing. Luckily I found an excellent article by AA4LR on rebuilding the R7000 that contained the necessary physical details to build my model. dipole, depending on how much extra length (with the 80m traps) I need to add to get it to resonate on 160m. Je kunt dan het aantal vierkante meter berekenen door gebruik te maken van onze handige tool hier op Berekenen. Set dimension “E” (figures 5 and 6). An on-the-air comparison was made between the portable whip dipoles up 20 feet and half-wave dipoles for 40 and 75 meters. The 40-meter or 7-MHz band is an amateur radio frequency band, spanning 7. The Unadilla W2AU 40/80 5 Band Antenna Kit is a perfect dipole for 40 and 80 meters. I used 14 gauge stranded wire. AGPtek Argon CO2 Flow Meter Regulator Hose, Mig Tig, UNF5/8 ,6. provide excellent performance on the 10, 15, 20, 40 and 75/80 meter bands. Every workout that I have done since February of 2007 is listed here. Trim a smal amount off the open end of. Directed by Johannes Roberts. The 2:1 SWR bandwidth for this vertical is about 250 KHz. Check out the coax trap calculator here: http://www. Find many great new & used options and get the best deals for Ultimax8040 Trap Double Bazooka for 40 & 80 Meters at the best online prices at eBay! Free delivery for many products!. Dodging AM heterodynes is what 40 meter Novice Operation is all about. The capacitance be- tween the coils and the tubing forms the C in the œsonant LC trap. 9 MHz Full-Wave Loop Antenna. This item is currently in stock. This two-piece trap is durable and collapses for easy storage when not in use. Recently, someone whose blog I follow mentioned that instead of waiting until a. So for a 20m-40m dipole, resonant your trap at 14. Shortened element with high-Q loading coils. While functioning as a full-size dipole on 20-meters, it's also an ultra-efficient end-loaded dipole on 40-meters. The Club is 100 Meters down the road on the left. The Experiment: In this experiment were going make a Ham Radio 20 / 40 meter short Coax Trap dipole antenna. 5 watts continuous and up to 10 watts intermittent. This is a picture of the House Trap in operation but the active pressure going into my three stage Tiny Trap is about 40-50 psi. The stick keeps the microphone away from the body of the instrument, cutting out reflections, and giving a more accurate measurement. Our range of predator traps are available in three models; DOC 150, DOC 200 and DOC 250. It has no adverse effect on inverted bucket operation other than to reduce its capacity by the low differential. My most recent antenna for top band was an odd shaped 160 meter full wave length loop. 200 MHz in Regions 1 & 3. Being a Special Effects designer and machinist I had all of the parts so I designed around what was in my collection of tubing, clamps and hardware. Note: As any novice knows, the 40 meter novice band has always been shared with international SW broadcast. Resources listed under Antenna Traps category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. meters by its length. Find 40 Meter Rotatable Dipole Antennas related suppliers, manufacturers, products and specifications on GlobalSpec - a trusted source of 40 Meter Rotatable Dipole Antennas information. A 40 meter trap is located at the top of a quarter wave 40 meter vertical. Coaxial cable traps have become popular in recent years, mainly because they are easy to build, easy to adjust, inexpensive, and coaxial cable is usually far easier to obtain than discrete capacitors and inductors. The aerial is fed via coax to a coupling box secured to an earth stake at the far end of the garden. Note that loss is maximum at trap resonance!!! Never make a trap resonant on the desired operating frequency!!. A square meter is a unit of area in the Metric System. Manually trimming and tuning the elements to resonant frequencies on the bands they are cut for. ULTIMAX8040 TRAP DOUBLE BAZOOKA FOR 40 & 80 METERS. The net result is the antenna's low base impedance essentially remains un-changed to the coaxial transmission line on 40 meters. wanted to build a 40 meter (7. My homemade TRAP-dipole for 40/80 meter need a extension so I can have the 160 meter band. The cross is the 80 meter coax trap. A few years ago, I acquired a multiband commercial antenna called a half-sloper. I specifically wanted to work 20 and 40 meters, so a dipole with a 14. short 17 meter dipole antenna. Good radial field, all bands except 40 are in the center of where I want it, but the center frequency on 40 is 6. rotary evaporator bump traps, self washing Trap is designed to eliminate hold up common to the round style of rotary evaporator traps. the 7 MHz or 40 meter (USA) band. 7 MHz 3-13 4 Dimension D, 12 Meter Trap for 24. 40 meters: By length of the Section B we tune the antenna parts “Section 1 plus LC plus Section B” to resonance to 40-meters. 5 meters high measured at 10 meters and the left and right targets are set 5 degrees out from the centerline and 3 meters high. (formerly GSI Commerce, Inc. details about ultimax8040 trap double bazooka for 40 & 80 meters super broadband, excelent swr, only 103' feet long. It provides an vital function to the plumbing and helps keep the home clean and safe. A 40 meter trap is located at the top of a quarter wave 40 meter vertical. Since 1995, PlumbingSupply. Choose from top trade brands. The the M67 fragmentation grenade, about 35 to 40 meters. in swage tubing (parts l) with hole in traps assembly (parts B). The 80 metre trap is 26 turns of 1. In 1973, my high school, Acton-Boxborough Regional, in Acton, Massachusetts, moved to a sprawling brick building at the foot of a hill. Beam Antenna Height versus DX Signal Arrival Angle Gary Wescom – N0GW 1/29/08 It is probably universal for us to imagine the great DX we will be able to talk to with our first beam antenna. These are designed to humanely kill common pests, such as; ferrets, rats, stoats and hedgehogs. Although 4 bands is usually stretching it, don't be afraid to try more. The 42,700-square-foot research and development lab, located adjacent to the company’s world headquarters in Milwaukee, will serve as the company’s global innovation hub. Cushcraft World Ranger dipole antennas give bi-directional patterns and rotatable convenience. The RF for the 40-meter band will go to the 40-meter dipole and the RF for the 80-meter band will go to the 80-meter dipole. 17 Meter 72. Trim a smal amount off the open end of. Will use the Coax Trap Design calculator software to design the 20 meter Coax Trap (See Reference Links). Save 40 meter traps to get e-mail alerts and updates on your eBay Feed. Whether your home is on a sewer or septic system, the systems within your home are essentially the same. gr/2013/03/dipole-antenna-with-traps-on-40-20. I tuned the traps for the middle of the phone portion of the bands. A small amount of tuning adjustment can lower the SWR on 20 meters. Also covers 30-17 & 12 meters with an antenna tuner. Antenna Plots produced using MMANA-GAL Antenna Model Program – 10m plots omitted to save space. We also carry both standard and large diameter fittings. Meter Reading & Bill Calculation. The concerts are free of charge. 80/40m Dipole. Champion VisiColor High-Visibility Paper Targets, 8" Bull, 10pk. The bandwidth limitations on 160 and 80 meters. This should be below the desired frequency before trimming is commenced. Every workout that I have done since February of 2007 is listed here. At Zoro, everyone gets low prices on our huge selection of Industrial Supplies, HVAC Equipment, MRO Products & much more. 4-foot elements rather than 32-foot elements as in a conventional 80 and 40-meter trap dipole. From practical experience we know that spacing large traps about 40 feet apart is a good rule of thumb. 7 seconds At 30mph, 44 feet per second, you will have travelled 30 feet before you even take action, and a further 45 feet before the brakes bring the car to a halt. Waste water traps. The the M67 fragmentation grenade, about 35 to 40 meters. 40/30m rotary dipole (7-10 MHz). He got into the pool and crawled on his hands and knees due south for 6 meters, before he banged his head on the pool's edge. 200 MHz in Regions 1 & 3. The results are energy savings and a cleaner, healthier environment. The 40-meter or 7-MHz band is an amateur radio frequency band, spanning 7. 5-22 MHz 3-14 6 Dimension F, 17 Meter Trap for 17. 19% homosexual. The measurements below are for building a Double Bazooka Near Vertical Incident Skywave (NVIS) Antenna. At Crossling, we carry a huge selection of great value traps which have a range of uses in the everyday life of a trade installer. Therefore, 123/3. 40 Meter 126. DEWD Dipole for the 80- meters with a Stub Matching. Antenna basics. Need Help with this product? Our specialists are here to help you find the best product or part available for your application. The sixty-six foot version is built around a resonant 40 meter antenna and performs well on 80 meters. Band switching is accomplished automatically through the use of two matched Hy-Gain 40-meter Hy-Q traps. 0001592828 meters cubed. DX Engineering 300 ohm ladder line has a velocity factor (VF) of 0. Unlike many END FED antennas on the market, this one does not require the Antenna Tuner to operate. Thermo Scientific Orion Versa Star Meter Bundles Get high accuracy, premium performance and ultimate flexibility with the Thermo Scientific Orion™ Versa Star Pro™ benchtop meters bundled with Orion™ Navigator Pro software Ace Assortments Adapter and Stopper Kits Have the right adapter or stopper on hand when you need it most. I've adjusted the traps, and the top section is against the 30 meter trap. In the evening when most of us have time to relax and enjoy a little time on the radio, the higher frequency bands are either dead or very crowded. A square meter is calculated as the area of a square that has 1 meter on each side. 200 MHz in Regions 1 & 3. Directed by Johannes Roberts. Over the last 28 years I have tried many different 160 meter antennas. These include 32 OverFlow Chrome Deluxe Plug & Waste, 32 x 40 Chrome 2 Part Adj Pop Up Waste, 32 x 40mi Adj Deluxe C/P Plug & Waste. • An 18 ft. 7 to 1 across the entire 80 meter band. Also covers 30-17 & 12 meters with an antenna tuner. The larger the wire, the wider the bandwidth. 25mm enamelled copper wire (about 4. I have a 160 - 80 - 40 meter dipole up right now using his traps and conventional measurements between the traps and it's working great. 40 Meter Antennas 40 meter W8NX Vee 37 ft High -110 deg Apex 107 ft total length 75/40/20/15/10 meter Bands 75-Ohm Feedline 40 m Trap/20-10 m Stub tuned SWR Covers the bands less than 3:1 ERP = 166 W at 70 degrees 30 deg -2. Same dipole antenna with coax traps would have about 0,6 dB total loss - the double, but a negligible difference on the S-meter of your DX correspondent! The exact resonance frequency of the trap is important to define by construction. This is an End-Fed Half-Wave (EFHW*) antenna for 80/40/30/20/17/15/12 and 10m bands. Also shown is the same dipole with discrete commercial traps. For each of these frequencies, walk around the walls of the room and note down the highest-pressure areas. I have a 160 – 80 – 40 meter dipole up right now using his traps and conventional measurements between the traps and it’s working great. 4) by assuming that the dislocation density measured in length per cubic meter varies linearly with effective plastic strain , such that. After using a 3-element KLM 40 meter beam for nearly 20 years at the previous QTH, I wanted something more reliable. Some of the soldered joints were dry and the traps looked grubby and full of cobwebs. A 40 meter trap could be for example a 15 pF capacitor in parallel with a Q = 200 , 33 u H inductance. New 20 Meter Antenna Traps (1 Pair) Make a MULTI-BAND TRAP Dipole Antenna that Covers 10 thru 40 Meters!(55 feet overall length) -Or- Make 2 Sloper antennas (26 feet overall length)!. Overall length is 40 ft. The only difference is that the timber mast is replaced with a. And if you received a high bill, verify that the reading is accurate by taking your own reading; occasionally bills are estimated or a reading may have been keyed incorrectly when entered into the billing system. Directed by Johannes Roberts. The ability to tune on any specific frequency in the 7 -50 MHz (40-6 mtr) range with utmost perfomances, soon will make this 3el Yagi antenna as a real UltraBeam "queen". The International spelling for this unit is square metre. My 40 meter vertical cost me $13. our antenna with any “trap. You would: 1. how to make a 2 meter dipole antenna. Below that it is not. 160-Meter Dipole Height N0GW - Gary Wescom - 1 Nov 2006 During the current lull in solar activity, operation on the 160 meter ham band has become more popular. Polypropylene. 15 and 10 meters: The trap serves as a shortening capacitor at that ranges. 40 Meter Antennas 40 meter W8NX Vee 37 ft High -110 deg Apex 107 ft total length 75/40/20/15/10 meter Bands 75-Ohm Feedline 40 m Trap/20-10 m Stub tuned SWR Covers the bands less than 3:1 ERP = 166 W at 70 degrees 30 deg -2. The FMA-1600A Series mass and volumetric Omega's flow meters use the principle of differential pressure within a laminar. The 30 meter beam worked so well that a new 40 meter shortened dipole was built. Let's look at the more conventional trap antenna first and simplify it to just 2 bands, like 80/40 or 20/10. About 40/20 Trap Dipole The resource is currently listed in dxzone. The Fairfax County Fire and Rescue Department is a combination career and volunteer organization providing fire suppression, emergency medical, technical rescue, hazardous materials, water rescue, life safety education, fire prevention and arson investigation services. Post #209 40, 20, 15, and 10 meters without much difficulty. ,Ltd - GLEECON is the world‘s leading manufacturer of Pest Control products. These units appear all over the study area in water depths 50-250 m. Glee Electricals Manufacturing Co. Some of the soldered joints were dry and the traps looked grubby and full of cobwebs. 700MHz for some listening and the odd rag chew. I only bought it for use on 80 meters. You’ll probably need to move the tap point to center this up. 160m ocf dipole. Manufacturer of laser power & energy meters, as well as terahertz meters and beam profiling cameras. This Portable Nontoxic Fly Mosquito Trap features high-quality iron wire and gauze mesh construction. Simplest method to make traps in general and the traps for this design in particular, is to take a short piece of pvc drainage pipe e. The bandwidth limitations on 160 and 80 meters. 40 Meter Antennas 40 meter W8NX Vee 37 ft High -110 deg Apex 107 ft total length 75/40/20/15/10 meter Bands 75-Ohm Feedline 40 m Trap/20-10 m Stub tuned SWR Covers the bands less than 3:1 ERP = 166 W at 70 degrees 30 deg -2. You can mount them high and away from the trees for better performance than a wire dipole. Purchase price includes two units. com/tech-journal-september-2019 Successful Applications Made Via Drone Ag tech startup Rantizo is working to lead in-field applications via. Traps allow operating one dipole on more than one frequency. Delta Loop Antenna. DX Engineering 300 ohm ladder line has a velocity factor (VF) of 0. agprofessional. FROM SPI-RO MANUFACTURING! New Dipole Antenna, Covers 80 Meter Amateur Radio Band Model MD-80 Approx. That's over $29,000 per year in wasted energy costs for a plant operating 365 days a year. Such a condition is represented by a quality factor (Q). San Francisco, CADignity Health has teamed up with The Employee Network to provide all of our employees/retirees access to the nation’s premier employee discount program. They have a pointy stick at the top, which is the microphone that samples and measures the sound. A trap design guide is provided below to aid multiband dipole construction. Choose from top trade brands. As for 160 meters, consider it lost. 30 Meter 105. White Waste Traps to BS 3943. Another way of understanding its operation is as a loaded quarterwave Marconi vertical with the radiating element bent over. Alligator clips on the torroid leads attach the coils across the 10-meter switches (10-meter switches “open” and all other switches “closed”). Traps for different bands can be combined onto one dipole to create a single antenna tuned for maximum gain on all your favorite bands, from 160 to 10. The top is 23 meters high and goes to the right to a pole on the roof of the house. The main category is Dipole antenna projects for 20 meters that is about Dipole antennas for 20 meter band. 20 meters and 10 meters are mechanically between the 80 meter top and 40 meter bottom. The dimensions given in the data sheet for an 80/40 meter dipole seemed a bit short based on my past experience with trap dipoles, and an email to the company confirmed that these dimensions were for the center of the phone bands on 80 and 40 meters. The SWR is less than 1. The size of the antenna makes a Half wave length on 80 meters, and with the traps a half wave on 40m with a SWR (standing wave ratio) of 1:1-1. Do you need an antenna tuner? Nope. Many portable operations prefer these light antennas because a simple glassfibre pole is often sufficient to lift the antenna. wanted to build a 40 meter (7. With Mandy Moore, Claire Holt, Matthew Modine, Chris Johnson. Dipole antenna with traps for 20 and 40 meters Original article posted on: http://sv1cdy. For many ham radio operators, it is not feasible to put up a a full length dipole on HF. These include 32 OverFlow Chrome Deluxe Plug & Waste, 32 x 40 Chrome 2 Part Adj Pop Up Waste, 32 x 40mi Adj Deluxe C/P Plug & Waste. In case you haven't noticed. A FREE trap design guide is provided to aid multi-band dipole construction. If you have this QST, can you post here the dimensions. 85 DBI in free space. 1 Dimension A and B, 80/40 Meter for 6. Visit your local hardware store to purchase a trap cage. Dit betekent 100 x 50 = 5. Then, when an insect does enter a responsive period there will be a trap, nearby, to take care of it (preferably within visual range). NEW! CAA-500MarkII Comet has redesigned the CAA-500 to include a full-color TFT LCD display and SWR graphing. Also covers 30-17 & 12 meters with an antenna tuner. The outlets accept 1. Shortened element with high-Q loading coils. New electronic parts added daily. 75/80 METER TRAP DIPOLE ANTENNA - 133. VERLOPEN Vergelijkbare advertenties. The TV channels. 80-meter coil tap point is found, however, solder the wire to the solder lug on the clamp. I used 2 meters of PVC tube of 4 cm diameter as a temporary mast, stuck into a heavy umbrella stand (see Fig. 5 across both bands. The SWR at the top end of 20 meters is high but pretty much what is expected. You can get almost the same effect as a thick wire by using a number of wires in what they call a cage. A 12/17-meter trap antenna consists of a pair of traps resonant at or about 12-meters placed within a 17 meter dipole. Homebrew 40/80 Trap Dipole Design This Antenna design was one that I used about 4 years ago, it worked exceptionally well on 80m and 40m. ultimax8040 trap double bazooka for 40 & 80 meters. ,Ltd - GLEECON is the world‘s leading manufacturer of Pest Control products. I did not glue the sections into the T-piece. Only one center support is needed and only one coax is used to feed this antenna. Pay and Play Card System. 43 dB = 94 W F/S at 30 deg -6. ultimax8040 trap double bazooka for 40 & 80 meters. Available for 40-15 Meters or 80 Meters. Either they do not cover those lower bands, or they have such an unreasonably narrow useable bandwidth as to be nearly useless thereon. Try inserting a short length jumper (3 ft) to see if the rig's built in tuner will match. One big consideration was weight, 4 cage dipoles for 40/30/20/10 uses almost 1,000 feet of wire. The size of the antenna makes a Half wave length on 80 meters, and with the traps a half wave on 40m with a SWR (standing wave ratio) of 1:1-1. how to make a 2 meter dipole antenna. Oost West en. How do we get back the 160 meter resonance? By placing a series. The traps are at the ends of 24. 2012-11-08 08:40 strk * Rewrite topology. View the manual for 6BTV Bandwidth at it's broadest! VSWR 2:1 or better at band edges on 10-40 meters. Tuning the 40 m traps Tuning can be done with either a GDO or a signal generator and RF meter. Will use the Coax Trap Design calculator software to design the 20 meter Coax Trap (See Reference Links). MOSLEY DIPOLE CONVERSION KIT MODEL TA-40-KR TO CONVERT MODELS TA-31, TA-32, TA-33 AND TA-36 FOR OPERATION ON 40 METERS The high performance of your MOSLEY Antenna can only be achieved if the antenna is assembled in accordance with the instructions supplied. Note that this is a coupler, not a piece of pipe. I hang it in the tower up 9 meter, and the ends is inverted to about 4,5 meter over ground with an angel about 140 Deg. Multiple Electrical l/2 at 20, 15 and 10 meters 40 meter parallel resonant trap. The W3DZZ has been up for a number of years and is a really good antenna for 40 and 80 meters. For this reason the 40 meter section was left a little long so that when the 80 meter section is the correct length, the 40 meter section resonates on the desired frequency. The Cushcraft manual. es:res(%30_per_%31:%30 por %31,Abort:Abortar,Action:Acción,Active_area_%25:Area activa %,Actions_Query:Consulta de acciones,Add_New_Fertilizer:Añadir nuevo. This type of trap construction of- fers several electrical advantages arid is. This antenna has basically 3 elements. The traps were suspended from the workshop ceiling and excited with a grid-dip meter that I found on eBay for $5, that sadly turned out to be missing the coils. Rated for 2KW PEP. Instead, waste matter leaves your house because the drainage pipes all pitch, or angle, downward. W8NX, who has done a great deal of work on these types of antennas, published an 80/40/17/10 meter antenna with only one trap each side of center, and it was tuned to 5. net is a Web site dedicated to ham radio (amateur radio). About The Antenna. I believe the details of this technique were first published a while back by John Stanford, NN0F.