20 And 40 Meter Vertical Antenna

A vertical was a possible alternative. The antenna should be close to that 36. Figure 1 — My small mobile home. Feed square and rectangular loops at a corner. The higher gain antennas have a lower vertical beamwidth. 6 80 Meters, 3. l vertical antennas almost always provide. This up and over, over and down design had been used in HF wire antennas. A long distance 6 element base station with 12. You can further reduce the height of the antenna by placing a capacitance "hat" at the top. You can erect dipole antennas in a variety of configurations to meet your needs: flat-top, inverted-V, sloping dipole, or folded dipole. External Antenna can reach up to 600 meters. Most of the parts for this simple antenna can be found locally or in your ham shack "junk box. The overall length of that antenna is 44 feet. I chose 58' for Mid 80 Meter Operation. Be aware that any multi band vertical will not be a great performer on 80 meters. 6) No attempt was made to resonate the antenna on a specific frequency, but I wanted to get it close to 40. After looking at articles in the ARRL Antenna Book and on L. The purpose of this project is to design a simple multiband vertical dipole antenna for 20 meters and above, with a tuner, that will provide gain and a. The 40 Meter Vertical Project By ZL1ALZ, John - New Zealand. Hustler 6BTV 6-Band HF Vertical Antenna and DXE Installation Guide Packages are trapped-vertical antennas that provide an omni-directional pattern. 80 Meters We have two delta-loop antennas systems for 80 meters. It have not attached the 20 and 10 meter elements. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. Base Antenna 146/446/1200 MHz Tri Band Vertical Fiberglass Base Antenna. 1 MHz, it is between the 40 and 20 meter bands. I now have individual 80 and 40 meter NVIS antennas. On receive, it’s actually pretty good; only for extremely weak or barely readable signals is it beaten by the 40m loop or my attic mounted half-sized G5RV. " Here are some comments from VE3BF: Build an easy and inexpensive portable antenna for 20 meters and other bands. In fact in removing your radials, you reduced the size of your antenna of 50% because these radials are fully integrated in the antenna design. its not really apparent from the photos but its also out on an arm from the mast. BPverticalDipole: Vertical base at 19 feet, Buddipole: 2 x 22" arms, coil 1. This antenna is 58 ft tall and is mounted on a hinged base. 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 top of the trap supports a whip, which is sized to bring the whole antenna into resonance on 80 meters. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. A 40 Meter Vertical Antenna for Small Spaces This antenna offers good performance in a compact footprint. , a 2-meter vertical, a 40-10 Meter Off Center Fed (OC F) Dipole, and a 10-meter rotatable aluminum dipole. Vertical Half-Rhombic and Long-Wire Antennas. Of course, this type of vertical antenna needs a good ground plane to perform well. 903 2 meter vertical antenna products are offered for sale by suppliers on Alibaba. Description. This time I installed in a vertical Note that each of the two fishing poles that make up the arms of the dipole, is almost 3 meters long. Eventually I decided on a vertical antenna because they are pretty good DX antennas on the low bands providing you have a good. VS-42 Vertical Sloper Antenna for 10, 15, 20, and 40 Meters With PB-1C 1:1 Pro-Balun Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name. Introducing the new Hy-Gain PATRIOT-PLUS AV-680 with a fully tunable 3. 15 dBi gain on 2 Meters and a 5/8 Wave with 5. Table 7 reveals what happens when a λ/4 monopole built from aluminum tubing is employed EZNEC studies suggest that a 5⁄8 λ antenna may be worthwhile on 40 and 20 meters (provided that 5⁄8 λ radials are also utilized in the ground screen). Testing was done in Hellschreiber mode by repeatedly transmitting the characters "1 2", and using a Web-SDR receiver to check my signals. The matching unit contains a 49:1 transformer that matches the high input impedance of an EFHW antenna to your radio. Results for a Quarter Wavelength 20 Meter Vertical. It can also be adapted to operate in the 75 or 80 meter band. Install info Video We ship the Silver Bullet Portable Vertical Base antenna in the US only. tube with a threaded stud on the upper end. This problem has been faced many other hams too. You will note that the spacing between the vertical wires is 20 inches for 15 and 10 meters, but 40 inches for 20 meters. 300 kHz at 40 is electrically the equivalent to 600 kHz at 20 or 1. A wide variety of 2 meter vertical antenna. Also includes how to tune coaxial cable traps using the MFJ grid How to make an easy and inexpensive portable antenna for 40 meters and other bands. Considering the lousy band conditions at the long bottom of the sunspot cycle, the R7000 proved to be a surprisingly good performer, especially on 40 meters. Eventually I decided on a vertical antenna because they are pretty good DX antennas on the low bands providing you have a good. free shipping over $100, great deals on cool stuff, ham radio, icom, kenwood , yaesu, wouxun, MTC, KG-UVD1P, KG-uv6D, VHF, UHF, narrow. SO, according to some, this antenna will be terrible. Eventually I decided on a vertical antenna because they are pretty good DX antennas on the low bands providing you have a good radial system. Background:. The larger the wire, the wider the bandwidth. Ten meter operations can be quite exciting once propagation supports signals in the 28 MHz Amateur Radio Band. Ward Merdes - KL7IXW. " Here are some comments from VE3BF: Build an easy and inexpensive portable antenna for 20 meters and other bands. Antenna consists of from a vertical radiator V1, helical inductor L1, antistatic resistor R1, antenna grounding. The materials for a 20 Meter antenna mast, insulator, and radiating element, from bottom to top, are: 1. 2:1 (typical) * Bandwidth (2:1): Full band * 1/4 £220. How to use a manual antenna tuner. The vertical antenna is omni-directional. How does this design compare to other 20 meter vertical antennas? The table below shows a comparison of what you might expect with other architectures. The 4-BTV is designed as a self-supporting vertical to provide optimum operation in the 10, 15, 20 and 40 meter bands. Other bands are well within reach by adjusting the coil tap, mast configuration, whip length, etc. But many Hams report they can still get good performance at lower than half wavelength heights. 05 meters (10 feet) or less over land, as in a vehicular If the gain of a 32-foot vertical whip at 9 MHz and 20° take-off angle is desired, locate 20. 50: DL75DX: Full size Delta Loop for 75 meters: $98. This is post 2565 in a continuing series of simple ham radio antennas. 000" x 10" fiberglass rod. It can also be adapted to operate in the 75 or 80 meter band. Homemade 20 metre band loft dipole! Here is a formula and calculator for creating a loaded (shortened) quarter wave vertical or balanced dipole. 7 inches) This antenna is best when elevated 8 to 10 feet above ground. Top to bottom: the base of the 6 m, 3 m, and 2. 5 dB gain and dual polarity. In this picture, the 40 Meter loading coil is in place. The RF power wave reshaping help taking some of the RF power emitting vertically to the horizontal radiation. 42 meters or 11 feet 2 inches long from the top of the mounting spring to the tip. Requires ¼ wave radials for each band or many (60+) short radials. Dipoles are widely used on bands like 80 metres, 40 metres, 20 metres, 15 metres and 10 metres where they can provide excellent levels of performance. 4-Band antennas cover 40, 20, 10, and 6 meters, with no tuner required! 12 meters may also work on the 4-Band 300 watt model. " Here are some comments from VE3BF: Build an easy and inexpensive portable antenna for 20 meters and other bands. Murray, KD1BL Author's Note: This article describes a 75/40 meter NVIS, but one could use the construction techniques to build just a 75 meter or a 40 meter version. Antenna works fine at 40- and 20- meter. The Wire Size can range from 16 AWG to 12 AWG. Our 5/8 vertical for 20m, during a windy day. However, a number of variables has required some extensive remodeling for 40-meters. 20 meter loop mode NEC file. I've suggested before using the MFJ-1792 (80/40 vertical) as a basis for such an arrangement, adding "fan vertical" wires for 30/20/17/15/10 or whatever you want. You can further reduce the height of the antenna by placing a capacitance "hat" at the top. Most of the parts for this simple antenna can be found locally or in your ham shack "junk box. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio bands". 125" x 6' aluminum tubing 1. A high-performance 80/40 Meter vertical. Subject: Merdes in Alaska - TA33 up 40+ Years 01/13/20 Dear Mosley: Attached is a winter photo of my TA33 at 70’ atop a 1400’ hill just north of Fairbanks, Alaska. (conductivity = 0. Note: After tuning the 20 meter section and the 40 meter section. The ends have been bent inward to reresonate the antenna. Overall, I find that a horizontal antenna (dipole) is less noisy than a vertical. To upgrade 4BTV to 5BTV you have to use 1" threaded coupler (3/8" x24 threaded x 1"), the part number is HSR-5648. l almost a 24 hour DX band l 160 meters - an excellent DX band for the next four years. The antenna will “see” only the wire that comes to the coiled or folded wire on the wire-holder. An Ultra-Simple 2-Meter Antenna You'll get J-pole performance from this base station vertical antenna built with coat hangers and PVC pipe. March 23rd, 2012 by k8gu Leave a reply ». Also a full size quarter wave radiator for 20 Meters. Let's first calculate what we need. Multiband vertical HF antenna. an antenna tuner at the base of each vertical to adjust the antenna to a center frequency of 3650 kHz; we needed a tuner in the shack to adjust for the CW or SSB band segments. I am not able to tune the 12 and 17 meter bands. HF Ham Radio Vertical MutiBand High Performance Base Antenna! Covers 10-80M Bands ( 10, 15, 20, 40, 75/80 Meters )! For Transmitting and Receiving! Approx 25ft tall Aluiminum with Coils, Handels up to 1500W PEP! Attaches to most Standard Optional Mast Pipes, & Requires Optional length of 50 ohm Coax Cable. Real antennas are a compromise between performance and practical limitations or economies of This section explores a 10m high vertical of 20mm diameter aluminium tube mounted at ground height, and a The ZeroFive "43 foot MULTI-BAND 10 to 160 meter vertical" is fed at the base with a Array. Each 40 meter vertical had six quarter-wave radials. Here is a review of what's important. Vertical Half-Rhombic and Long-Wire Antennas. antenna for 80-10m Steve Nichols G0KYA A shortened multiband antenna, about 23m long, for 80m-10m that offers low SWR (1. This one is an experiment. I do have some questions about noise and tuning. As with the fan based antenna I've messed with trapped antennas previously, building a trapped end fed version using a home. To upgrade 4BTV to 5BTV you have to use 1" threaded coupler (3/8" x24 threaded x 1"), the part number is HSR-5648. A Portable 75/40* Meter NVIS Antenna - with 3/2/'09 updates - by David B. 95 OCFD 40/20/10/6 Meter Dipoles These antennas are CAD designed and engineered for low SWR, high efficiency, wide bandwidth. The materials for a 20 Meter antenna mast, insulator, and radiating element, from bottom to top, are: 1. Thanks to VE3BF for this easily-made 20 meter vertical antenna. Without enough protection from common mode RF feedback, my 160 meter antenna's coaxial feedline would likely pick up some of the RF radiated when I transmit on any of these other two antennas, and feed it back to my equipment in the shack via the coax shield!. I currently use only wire antennas which work fine on 40 and 80 meters, but on the higher Bands, I need some gain. Clothesline Antenna 45. Buy Hf Vertical Antenna and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items. The antenna should be close to that 36. So one can try a vertical antenna. Verticale portable antenna for 80, 40, 30, 20 and 15m, VK7JJ. 4) The basic antenna started in life as a 32. To the theoretical length. 09 meters pvc mast under the house and a convenient Norfolk Pine Tree at the edge of my property to support the horizontal portion of the antenna. It does offer different capacitors for different parts of the 80 meter band, which is a plus. With that rig, I can tune the 80, 40, and 15 meters bands. For the 20 meter collinear, there is an upper half-wave section, a phasing inductor, and the lower half-wave section that includes the feed point from the 75 ohm coax. 75 m and its square-shaped base measures 25 cm on a side. It can also be adapted to operate in the 75 or 80 meter band. The Vertical Loop is a good DX antenna. 1 MHz, it is between the 40 and 20 meter bands. copper tubing 20 meter dipole. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio Antenna, Loop, Magnetic, 20-10M, 125 W PEP, Each Magnetic- loop antennas have existed almost since radio began. The antenna has a swivel base to allow easy mounting and access to the top for tuning the 80 meter band. 160 Meters Our extreme project for 2002 was upgrading the 160M transmit antenna system from a single vertical to an inline array of three verticals, with endfire gain NE and SW, and broadside gain SE/NW. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio bands". There are lots of designs for quarter wavelength vertical antenna systems. The support insulator was buried to the soil with concrete (cement, rock dust, and 20mm stone aggregate at ratio of 1:4:4) in a squared hole. 40/20/15/10/6/2 Meters Halfwave Vertical Antenna MFJ-1796W. See the MFJ-1792 for the antenna without the wave radiator. Solid one inch fiberglass trap forms for optimum mechanical stability. AV-12AVQ HY-GAIN HF multiband vertical antenna 3 bands 10,15. 43 dB = 94 W F/S at 30 deg -6. This is a multi-element vertical HF antenna I designed. 17 Meter portable HF Dipole antenna analysis. 6-20 mtr & 6-40 mtr vertical antennas. 2 MHz at 10. 95804 The number 0. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. Operate 10 bands -- 75/80, 40, 30, 20, 17, 15, 12, 10, 6 and 2 Meters with this MFJ-1798 vertical antenna and get full size performance with no ground or radials! Full size performance gives high efficiency for more power radiated. This antenna measurement can be used for either a vertical antenna for 20 meters or a horizontal antenna for 20 meters. but the winner was a 2-meter base station vertical antenna made from a pair of coat hangers. On 6 meters, the antenna is much too long to tune as a 1/4-λ radiator, but not too long to tune up nicely as a 1/2-λ radiator. Save 80 meter vertical antenna to get e-mail alerts and updates on VTG NOS GAP Voyager DX-IV Vertical Ham Radio Antenna 160-80-40-20 Meters. 000 mhz to 30. The support insulator was buried to the soil with concrete (cement, rock dust, and 20mm stone aggregate at ratio of 1:4:4) in a squared hole of 40 cm width and 80 cm deep. Requires ¼ wave radials for each band or many (60+) short radials. 95804 is a constant used when insulated wire is used. FREE Shipping by Amazon. Using the formula above you will soon see that an antenna for 20 meters is approximately 16 feet 5 and 11/16 inches in length. In this picture, the 40 Meter loading coil is in place. I chose 58' for Mid 80 Meter Operation. The reason why this antenna type is so popular are probably the following: The length is "only" about 5,50 meters This antenna does not require any radials Easy to erect! To construct this antenna most use black markings on the aluminum to judge the length and give the user a satisfying S. To upgrade 4BTV to 5BTV you have to use 1" threaded coupler (3/8" x24 threaded x 1"), the part number is HSR-5648. Portable No Tune End Fed Half Wave Antenna 80-10m. It’s the perfect antenna for roof-mounting, ground mounting, off your patio deck, or to blend into the trees. uA Hustler 6BTV 80/40/30/20/15/10 meter vertical is 24 feet tall. Expect ham radio confidence with the DX Flagpole and it’s Vertical Dipole cousins down to 80M! Q. MFJ-1793 80/40/20m Vertical Antenna * Bands: 80, 40, 20m * Power rating: 1. However, unless the antenna is mounted a substantial distance from the real ground ( IE , more than ½ wavelength) the ground still has an effect on the radiation characteristics of the antenna system. Description. When antenna heights are limited to 3. l vertical antennas almost always provide. 5 mm copper wire with black plastic jacket. The 10/15/20 Meter Trap Vertical Antenna This antenna project came out very nice. free shipping over $100, great deals on cool stuff, ham radio, icom, kenwood , yaesu, wouxun, MTC, KG-UVD1P, KG-uv6D, VHF, UHF, narrow. One big consideration was weight, 4 cage dipoles for 40/30/20/10 uses almost 1,000 feet of wire. VS-42 Vertical Sloper Antenna for 10, 15, 20, and 40 Meters Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name. l almost a 24 hour DX band l 160 meters - an excellent DX band for the next four years. The vertical element is supported by a halyard hung from the crown of a very high oak tree about 20 feet out from the tree trunk. It is good for medium range contacts. power 500W SSB (250W in 3,5 MHz) h = 5,8 m. Download vertical 40 meter antenna for FREE. A Simple 40 Meter Vertical for Field Day. The radials are each No. The Wire Size can range from 16 AWG to 12 AWG. 25 Comments. For the 20 meter collinear, there is an upper half-wave section, a phasing inductor, and the lower half-wave section that includes the feed point from the 75 ohm coax. It works and it works quite well. 6 Ohm value. Would I buy this antenna again, yes, diuspite the issues, it performs so well on 40, and 20 that I really don’t think I could get anything to compare to it without a tower. The 80 meter wire will be used as inverted L and will extend from the top of the mast at around 11 meters away from the mast for the additional length of the wire. Background:. It's a rugged homebrew multi-band trap vertical antenna that works the 10, 15, and 20 meter amateur radio bands. 65 MEDIUM FLAT RATE BOX OR $17. [90] The World Trade Center officially surpassed the Empire State Building in 1970, was completed in 1973, and consisted of two tall towers and several smaller buildings. This antenna is designed for users who want a booming base station but space is a problem. Mechanical Specifications 2 meter: Number of elements: 20 (10 + 10) Element Diameter: 8 mm Aluminum tube: Dipole Diameter: 8 mm Hard Copper tube: Longest element: 1050 mm: Element Mounting Position: On Both Sides: Baluns and Connectors: Included: Boom Length: 5. The performance is compromised surprisingly little. Three, 6-foot/1. 5 out of 5 stars (6) 6 product ratings - HUSTLER 4BTV 4-Band HP Vertical HF. 903 2 meter vertical antenna products are offered for sale by suppliers on Alibaba. The old one had lost its radials and I wasn't able to hit the various amateur radio repeaters around. pipe; 5-BTV was designed as self-supporting verticals to provide efficient operation in the 10, 15, 20, 40, and 75 or 80 meter bands. September 1, 2015. Radials are also elevated. Introduction This antenna design came from. HF Antenna: 200W SSB: UHF: 9: 21' 80: CP725H: 40m/15m/10m/6m Trap vertical with radials : UHF: 6. Antenna works fine at 40- and 20- meter. This property offers an advantage in DX and This loop antenna has 2 DB gain over the dipole. Portable 40 Meter Vertical Antenna Build. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. Portable Tri-Band Vertical Antenna 40/30/20m. COMET Maldol HVU-8 Compact 8-band vertical base station antenna, 80/40/20/15/10/6/2M/70cm. I've suggested before using the MFJ-1792 (80/40 vertical) as a basis for such an arrangement, adding "fan vertical" wires for 30/20/17/15/10 or whatever you want. If you want 75 Meter operation make it 57 ft long. fed in the center direct with 50 ohm coax. Antenne Verticale raccourcie 40/80m Vertical antenna shortened 40 / 80m the radiating part of the antenna is constituted by a telescopic mast stayed. A high-performance 80/40 Meter vertical. 50: DL30DX: Full size Delta Loop for 30 meters: $56. End loading, low-loss fiberglass form, high strength 6061 - T6 Aluminum tubing, handles 1500 Watts PEP, requires guying and radials counterpoises or ground screen. Transmissions were with 50 watt on 3579 kHz. Without Radials. ost commercial 2-meter repeater antennas with gain fall into two categories: collinear arrays and stacked element arrays, with gains ranging from 3 to 9 dB1. Mechanical Specifications 2 meter: Number of elements: 20 (10 + 10) Element Diameter: 8 mm Aluminum tube: Dipole Diameter: 8 mm Hard Copper tube: Longest element: 1050 mm: Element Mounting Position: On Both Sides: Baluns and Connectors: Included: Boom Length: 5. Tests were completed within 20 minutes, from 21:20 to 21:40 local time. Vertical Dipole Portable Base Mobile Magnetic Loop by Alpha Antenna. Refer to Figure 3 for the dimensional key. You can erect dipole antennas in a variety of configurations to meet your needs: flat-top, inverted-V, sloping dipole, or folded dipole. I settled on a 2 meter vertical dipole. Introducing the new Hy-Gain PATRIOT-PLUS AV-680 with a fully tunable 3. On 40 meters the antenna is a 33 foot (full quarter wave) large diameter antenna. These antennas perform well in restricted space areas. 5 dBi gain on 440 MHz. Bypassing the coils completely gives a full-size antenna for 20 meters. Max Power Rating: 150/150/100 Watts SSB,. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. Solid one inch fiberglass trap forms for optimum mechanical stability. The antenna will “see” only the wire that comes to the coiled or folded wire on the wire-holder. September 1, 2015. 20 Meter Vertical Antenna - DX Engineering. 2m in the final feet tube (so we have 2+0. Mini UnUnTenna 40-10m. How to use a manual antenna tuner. The antenna mast added in 1951 brought pinnacle height to 1,472 feet (449 m), lowered in 1984 to 1,454 feet (443 m). This is a multi-element vertical HF antenna I designed. 20 Meter portable HF Dipole antenna analysis. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. The 40 meter horizontal loop also works well on 20, 15, and 10 meters on the 2 nd, 3 rd, and 4 th harmonic of the fundamental frequency. Propagation-wise it more closely resembles the 40 meter band. Total Wire Optimum Number Optimum Length Peak Gain. The support insulator was buried to the soil with concrete (cement, rock dust, and 20mm stone aggregate at ratio of 1:4:4) in a squared hole of 40 cm width and 80 cm deep. For peak performance, a field of radial wires should be used. I decided it was time to set up a 2 Meter base station. 2-meter vertical dipole array antenna-1 5 0 5 0 a = 40-1/8" rg-11a/u b = 40-1/8" rg-11a/u 1 100 3 1 60" 2 3/17/2008 2:20:17 pm. The classic Butternut HF2V vertical antenna operates on 80 and 40 meters. The Hustler 4-BTV is a four-band trap vertical antenna providing an omni directional pattern. I expect it to cover from 80 meters to 10 (or perhaps 6). We didn’t need tuners at the antenna bases. So being one who likes to build antennas, here is what I came up with. VS-42 Vertical Sloper Antenna for 10, 15, 20, and 40 Meters With PB-1C 1:1 Pro-Balun Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name. Fast & Free shipping on many items!. " Here are some comments from VE3BF: Build an easy and inexpensive portable antenna for 20 meters and other bands. The 4-BTV is designed as a self-supporting vertical to provide optimum operation in the 10, 15, 20 and 40 meter bands. Electrically Short Antennas have Low Radiation Resitance. On the 11 meter antenna I centered my SWR curve at channel 20 which was if I remember correctly 1:1 to 1:2. 40 meter pole dipole. The dimensions for the 20, 17, 15, 12 and 10 meter bands are shown in Table 1. The key here is to wind the wire on the kite-winder or reel. + SpWBonRsSB1XCor1edAB. One big consideration was weight, 4 cage dipoles for 40/30/20/10 uses almost 1,000 feet of wire. The 30 meter band is pretty interesting. 96 View details. The total length of the radiating system is 10. Multiband 40 - 10 Meter Vertical Using PVC by HI3/KL7JR. its not really apparent from the photos but its also out on an arm from the mast. Wire Antenna Trap Kit. You can further reduce the height of the antenna by placing a capacitance "hat" at the top. Details: You are now the proud owner of a Comtek 20 Meter Vertical Antenna. 5 out of 5 stars (6) 6 product ratings - HUSTLER 4BTV 4-Band HP Vertical HF. The antenna should be close to that 36. 6 Ohm value. Twenty inches would. tube with a threaded stud on the upper end. Using the formula above you will soon see that an antenna for 20 meters is approximately 16 feet 5 and 11/16 inches in length. Let’s see on the schematic of the Antenna (Figure 1A). Subject: Merdes in Alaska - TA33 up 40+ Years 01/13/20 Dear Mosley: Attached is a winter photo of my TA33 at 70’ atop a 1400’ hill just north of Fairbanks, Alaska. Vertical Half-Rhombic and Long-Wire Antennas. Considering the lousy band conditions at the long bottom of the sunspot cycle, the R7000 proved to be a surprisingly good performer, especially on 40 meters. HUSTLER 4BTV 4-Band HP Vertical HF Antenna 10 (11) 15 20 40 Meters for Ham Radio. 75 m and its square-shaped base measures 25 cm on a side. 40 meter pole dipole. Dipole Antenna Calculator. I had a homemade 20-foot/6. I decided it was time to set up a 2 Meter base station. During what turned out to be an extended tower-raising project (Going from 55 feet to 90 feet), I had my beam down and I needed an antenna that The antenna presents a very low wind loading and only need guying at the 30 and 40-foot sections. 125" x 6' aluminum tubing 1. This 5-band highly efficient no trap vertical antenna is located about 200 feet from the SVPA. Most of them tend to stick to vertical antennas with a 1/4 or 1/2 wave For our 15 and 20m verticals we applied 16 radials for each antenna, each radial being about 6 meters long. The MTR3b does not have an antenna tuner which restricts the use of the antennas I already have for SOTA activations. 3 each nylon heaving lines / halyards. Introducing the new Hy-Gain PATRIOT-PLUS AV-680 with a fully tunable 3. Figure 4 indicates that the antenna's SWR is blow 1. Antenna Installation At this time, my plans are to place insulated wires for a multiple-band single-feed half-wave dipole on the roof. Features 2kW power handling capability. 300 kHz at 40 is electrically the equivalent to 600 kHz at 20 or 1. Design of a 40 meter Vertical. The antenna should be close to that 36. With the whip fully extended, it’s only a matter of some experimentation to find a “sweet spot” for 6 meters. See full list on n1fd. Portable No Tune End Fed Half Wave Antenna 80-10m. Subject: Merdes in Alaska - TA33 up 40+ Years 01/13/20 Dear Mosley: Attached is a winter photo of my TA33 at 70’ atop a 1400’ hill just north of Fairbanks, Alaska. Hustler 6BTV 6-Band HF Vertical Antenna and DXE Installation Guide Packages are trapped-vertical antennas that provide an omni-directional pattern. But many Hams report they can still get good performance at lower than half wavelength heights. 9) zerofive-antennas 20 foot 6 to 30 meter flagpole vertical: 1: 2020-12-13: $849. To build a 1/4 wave 40m vertical with elevated radials using insulated wire, the formula is: 234 / operating frequency x 0. For the 20 meter collinear, there is an upper half-wave section, a phasing inductor, and the lower half-wave section that includes the feed point from the 75 ohm coax. So I have tried a couple different portable QRP antennas, in my search for the best QRP antenna. Wire Antenna Trap Kit. SimplyJustRandomness. 000 MHz to 30. The matching unit contains a 49:1 transformer that matches the high input impedance of an EFHW antenna to your radio. I decided it was time to set up a 2 Meter base station. • It was used as a multi-band antenna because when fed with ladder line (not coax!) it is easy to match the on any band from 80m to 10m • A G5RV used as a multi-band antenna should be fed with ladder line. The Wire Size can range from 16 AWG to 12 AWG. The antenna has a full 300kHz bandwidth on 80m between 3:1 SWR points. An alligator clip allows for shorting the different taps. Some of the verticals in the test group performed slightly better than the reference antenna on the upper bands (i. No room for radials, let alone big antennas! John Portune, W6NBC. Sixty-six feet/20. Magnetic Loop Antennas. Hustler 6BTV 6-Band HF Vertical Antenna and DXE Installation Guide Packages are trapped-vertical antennas that provide an omni-directional pattern. Also includes how to tune coaxial cable traps using the MFJ grid How to make an easy and inexpensive portable antenna for 40 meters and other bands. BigIR MK III Vertical with 80 meter coil The antenna does well on all bands including 60 meters. ost commercial 2-meter repeater antennas with gain fall into two categories: collinear arrays and stacked element arrays, with gains ranging from 3 to 9 dB1. Instructions. Sirio - anti-vibrations, anti noise and reinforcement radial ring for sirio 827 vertical base antenna. One of the antennas is a dual band, "model 2B2040LQ" , that covers 20 and 40 meters. The bandwidth on 40 meters is approximately 200 KHz, and on 20 meters approximately 250 KHz. The first (and most important) goal was to get the FULL 40 meter band at less than 1. You are now the proud owner of a Comtek 20 Meter Vertical Antenna. Discontinued, see Fan Dipole model 3B2080LFAN ***** ***** 3B4016S. End loading, low-loss fiberglass form, high strength 6061 - T6 Aluminum tubing, handles 1500 Watts PEP, requires guying and radials counterpoises or ground screen. Antenna consists of from a vertical radiator V1, helical inductor L1, antistatic resistor R1, antenna grounding. A Multi-Band Resonant NVIS Plug and Play Dipole. For peak performance, a field of radial wires should be used. Installing and testing the antenna. Not content with attempting to understand and build 40 and 80 meter verticals, I’ve decided to build a 20 meter version tonight. This antenna may be built as a 20 meter, 17 meter, 15 meter, 12 meter or 10 meter monoband vertical antenna. But it doesn't, really. End loading, low-loss fiberglass form, high strength 6061 - T6 Aluminum tubing, handles 1500 Watts PEP, requires guying and radials counterpoises or ground screen. 95 OCFD 40/20/10/6 Meter Dipoles These antennas are CAD designed and engineered for low SWR, high efficiency, wide bandwidth. Place the 30-meter trap on it, using clamp assemblies. The 10/15/20 Meter Trap Vertical Antenna "This antenna project came out very nice. Designed To Be Ground or Roof mounted!. Features 2kW power handling capability. I’ve glossed over the mechanical details of the antenna to this point – the base of the telescoping pole fits snugly-yet-easily into the a piece of 1″ schedule-40 PVC pipe. for 20,20 digital, 40, 40 digital, 60 80 and 80 digital. 91 m: Boom Size: Tapered Boom 40 x 40 mm + 30 x 30 mm: Number of Boom Pieces: 4. 6 80 Meters, 3. Radials are crucial in the design of a top loaded antenna as the electrical properties of the antenna require the reaction between the top loaded portion and the ground system. Cushcraft achieved a major breakthrough in the development of an HF multiband vertical antenna that has been specifically designed for use with a tuner and amplifier. 5") diameter PVC pipe. That makes it a perfect choice for tuning the radial. 25 Comments. amateur radio band. 5 mm copper wire with black plastic jacket. Description. Smart, strong, and elegant all band, stealthy for HOA, No Radials design. On 20 through 10 meters, the antenna is 1/4-λ long. 5 dB gain and dual polarity. 20 meters is considered the best band for DX during day and night hours. mast which holds three other antennas, viz. 95 MFJ-17758 - Dipole Antenna for 40 and 80 Meters $89. Optimize your performance on 80 & 40 meters. On the 20 meter band, MFJ uses decoupling MFJ-1792/1793 Vertical Antenna Instructions. Also a full size quarter wave radiator for 20 Meters. If you have a small patch of land to provide an earth ground, and if you can get one end of a wire secured at about 25-30 feet off the ground, you can construct your own custom solution. Indeed the speaker cable 20 meter dipole does not need an antenna tuner for 20 meters but I like to use it on 40 and 15 meters where the antenna tuner is required. Dennis/N0SP air mobile on 20 and 40 meters. Learn More. Multiband 40 - 10 Meter Vertical Using PVC by HI3/KL7JR. 50: DL160DX: Full size Delta Loop for 160 meters: $159. It is essentially an NVIS (regional low-bands) antenna, and unsuitable for DX work. Most of the parts for this simple antenna can be found locally or in your ham shack "junk box. End loading, low-loss fiberglass form, high strength 6061 - T6 Aluminum tubing, handles 1500 Watts PEP, requires guying and radials counterpoises or ground screen. I accidentally touched with my hand and it hit me very hard. T20/40: a 33' toroid halfwave antenna for 20 and 40 meters 20-foot Toroid 20-30-40 meter with switchable band taps Vertical antennas using Petlowany coils as ground planes: Short multi-band vertical with Petlowany coil groundplane 7/4/2008 7" Petlowany ground coil test on 20 meters 7/6/2008. com in 3 categories. At the top of the line, I soldered a 66 foot, 4 inch wire to each side of the ladder line. Discontinued, see Fan Dipole model 3B2080LFAN ***** ***** 3B4016S. I do have some questions about noise and tuning. 20 foot hoa 6-20 meter no radial multiband foldover vertical antenna with unun view details; 27 foot hoa 10-40 meter no radial multiband foldover vertical antenna with unun. homebrew 20 meter vertical, Depending on the 2 meter and 70cm frequencies you choose for tuning your antenna, you might have to compromise a little. For a while I used antennas for other bands with a tuner to get on 30. COMET Maldol HVU-8 Compact 8-band vertical base station antenna, 80/40/20/15/10/6/2M/70cm. Our 5/8 vertical for 20m, during a windy day. Feedpoint of 40 meter horizontal loop. Tower Pole as a Vertical Antenna for 80m 44 70. This antenna project came out very nice. 2:1 across the 40 meter band, a 1:1 across the 30 meter band and 1. Ten meter operations can be quite exciting once propagation supports signals in the 28 MHz Amateur Radio Band. The fiber-glass tubes are joint together by a short stainless-steel tube also used as an anchorage point for the vertical Trusses (furnished with the antenna) of the antenna elements. 2 m long radial, to give a vertical cut at 1/2l. 8% corresponds to a. Super-Sloper Antenna 44 69. DIAMOND - KV-5 - VERTICAL ANTENNA for 10-15-20-40-80 meters (3,5-7-14-21-28 MHz) - 500W SSB (250W SSB in 3,5 MHz) Vertical antenna for the main 5 HF bands, can work without radials if connected to a good ground, better if installed with radials (optional or user-built) max. I have tried a lot of different antennas over the years in efforts to increase the number of contacts made. Murray, KD1BL Author's Note: This article describes a 75/40 meter NVIS, but one could use the construction techniques to build just a 75 meter or a 40 meter version. Solid one inch fiberglass trap forms for optimum mechanical stability. This would give me between 2. Portable Tri-Band Vertical Antenna 40/30/20m. I wanted high efficiency 40 Meter antenna with low-angle radiation. Multiband vertical HF antenna. This antenna is designed for users who want a booming base station but space is a problem. Install info Video We ship the Silver Bullet Portable Vertical Base antenna in the US only. Antenna consists of from a vertical radiator V1, helical inductor L1, antistatic resistor R1, antenna grounding. Four counterpoises attached to the mast of the antenna with help of nuts insulators. Indeed the speaker cable 20 meter dipole does not need an antenna tuner for 20 meters but I like to use it on 40 and 15 meters where the antenna tuner is required. warc band dipole. Ward Merdes - KL7IXW. So, while the antenna is easy to feed on 40, it's a more difficult proposition on 20. The large diameter vertical element means more bandwidth and high wind handling. A 40 meter trap is located at the top of a quarter wave 40 meter vertical. Smart, strong, and elegant all band, stealthy for HOA, No Radials design. Other bands are well within reach by adjusting the coil tap, mast configuration, whip length, etc. For a while I used antennas for other bands with a tuner to get on 30. My noise level most of the time is S7 - 9 until very late in the night it my drop down to a I do not have an antenna for 160 but do listen from time to time. Super vertical Vertical antenna for the low bands with differential reactance Configurations: 40/80 - 30/40/80 - 40/80/160 - 30/40/80/160 Technical data Height 12 m 5kw power 3. Designed To Be Ground or Roof mounted!. Full 20 meter band coverage is available by simply telescoping the tubing to 16. Stock availability and shipping volume can delay shipping. For the last 35 years or so I have been a 40 meter CW specialist for Field Day. Install info Video We ship the Silver Bullet Portable Vertical Base antenna in the US only. This would be a perfect time to build an inexpensive, basic 10 meter ground plane antenna. Subject: Merdes in Alaska - TA33 up 40+ Years 01/13/20 Dear Mosley: Attached is a winter photo of my TA33 at 70’ atop a 1400’ hill just north of Fairbanks, Alaska. It does offer different capacitors for different parts of the 80 meter band, which is a plus. 0303 Siemens/meter and dielectric constant = 20), then the Table III Optimum number and length of radials for a vertical antenna on 40 meters (7. It is essentially an NVIS (regional low-bands) antenna, and unsuitable for DX work. Feed with any length. W5ALT Indoor Vertical Antenna A base loaded vertical antenna for use on all the bands from 6 to 40 meters. The measurements below are for building a simple Dipole Antenna. The 10/15/20 Meter Trap Vertical Antenna "This antenna project came out very nice. 100 MHz) for CW. Buy Hf Vertical Antenna and get the best deals at the lowest prices on eBay! Great Savings & Free Delivery / Collection on many items. 6 Ohm value. Vertical support up to 1. 11 meter vertical die dipole making schematic. tube with a threaded stud on the upper end. QST%20Ferreira. Testing was done in Hellschreiber mode by repeatedly transmitting the characters "1 2", and using a Web-SDR receiver to check my signals. I used to use a telescoping mast adjusted to 40m resonance with added wires for 30/20/17 which worked well. I had an old broken 20 foot fishing pole that only had 16 feet of length so I decided to see if I could make an effective half size 40 meter antenna with it. This is the basic principal behind most commercial vertical antennas, that often become the solution to the SPACE problem for a reasonable antenna on 80 meters. 5 out of 5 stars 7. Butternut 80 & 40 HF Vertical Antenna | Explore. VS-42 Vertical Sloper Antenna for 10, 15, 20, and 40 Meters Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name. Similar to the vertical, it works very well on 20 through 10 Meters but is a little too low for good DX on 40 and 80 meters. 5:1 SWR on 40, 30, and 20 meters. MBD-40/20 40-20 Meter Dipole - $65. VERTICAL ANTENNA. Expect ham radio confidence with the DX Flagpole and it’s Vertical Dipole cousins down to 80M! Q. The 40-meter section consists of a 36 in. How does this design compare to other 20 meter vertical antennas? The table below shows a comparison of what you might expect with other architectures. Description. free shipping over $100, great deals on cool stuff, ham radio, icom, kenwood , yaesu, wouxun, MTC, KG-UVD1P, KG-uv6D, VHF, UHF, narrow. Propagation-wise it more closely resembles the 40 meter band. Most of the parts for this simple antenna can be found locally or in your ham shack "junk box. MFJ1793 MFJ Vertical HF Antenna 20/40/80 mts. The materials for a 20 Meter antenna mast, insulator, and radiating element, from bottom to top, are: 1. 5) Radials? Don't have room for them and never used them on a vertical doublet. This calculator is designed to give the vertical length (height) of a particular antenna, for the frequency and wavelength chosen. Super wide bandwidth means more time operating ,and less time stuck on a frequency your trap vertical is tuned for. The old one had lost its radials and I wasn't able to hit the various amateur radio repeaters around. The resource is currently listed in dxzone. Some of the verticals in the test group performed slightly better than the reference antenna on the upper bands (i. The matching unit contains a 49:1 transformer that matches the high input impedance of an EFHW antenna to your radio. Save 80 meter vertical antenna to get e-mail alerts and updates on VTG NOS GAP Voyager DX-IV Vertical Ham Radio Antenna 160-80-40-20 Meters. antenna was mounted on top of a wooden utility pole, under a two element 40 meter Yagi (see Figures 2 and 3). If the flagpole is cut to the proper wavelength, then it should aproximate a 50-ohm load. On 6 meters, the antenna is much too long to tune as a 1/4-λ radiator, but not too long to tune up nicely as a 1/2-λ radiator. The bandwidth on 40 meters is approximately 200 KHz, and on 20 meters approximately 250 KHz. HF Multiband Vertical Antenna 6, 10, 12, 15, 17, 20, 30, and 40 Meter. Adjust the 20m stub and 40m section for low SWR at Center frequency. The 1/4 wave vertical element is mounted above the bottom mast separated by a fiberglass rod insulator. If you are in a hurry getting on the air or donґt want to disturb your neighbours with ugly antennas this antenna can A reversible vertical for 15, 12 and 10 meters. Antenna-input resistances at resonance were rst calculated, assuming lossless, innite-Q traps. Full size quarter wave radiator for 40 Meters -- thats 33 feet of ruthless radiating power. Be aware that any multi band vertical will not be a great performer on 80 meters. 2) My 40 meter OCFD* fed to the FT857d transceiver was also tuned. 12 meters of #14 AWG house wire for the radial system and the antenna element. But it doesn't, really. The upper end was left to fall wherever it ended up, in most cases the top end fell past the high end of each ham band. Most of the parts for this simple antenna can be found locally or in your ham shack "junk box. 40 meters in 5. The top section of the vertical consists of a 3/8-inch rod 19. The antenna itself is 3. Bands of operation ---10/12/15/17/20/30/40 meters with full bandwidth. 0303 Siemens/meter and dielectric constant = 20), then the Table III Optimum number and length of radials for a vertical antenna on 40 meters (7. For 20 meters and higher in frequency it is practical to use λ/2 verticals with little or no ground plane. Either way, this antenna will add some RF "power" to your signal. Vertical/Horizontal, Combination Quad Reflector/Yagi Driven, 4-Elements Gain. The antenna was mounted at a height of 8 feet on an HF dipole support pole between the house and rock wall. 08 inches for the longer of the two 3/8″ rod elements. A Multi-Band Resonant NVIS Plug and Play Dipole. Also, worth noting is the pattern breaks up on 10M on the 43’er. The antenna has a swivel base to allow easy mounting and access to the top for tuning the 80 meter band. 5 mm copper wire with black plastic jacket. My noise level most of the time is S7 - 9 until very late in the night it my drop down to a I do not have an antenna for 160 but do listen from time to time. 12 thoughts on The 40 meter Stealth Vertical K7ZB says: 48 useful links about vertical antenna projects for the 40 meters band collected in Antennas/40M/40 meter Vertical Antennas at MULTI BAND VERTICAL ANTENNA 4 BANDS 40 meters A simple 20 meter vertical with matching balun. warc band dipole. 20 Meter Zero Five 5/8 Vertical Antenna vs Dipole, K7PP. Vertical/Horizontal, Combination Quad Reflector/Yagi Driven, 4-Elements Gain. Performance. Antenna lengths are approximately 20 and 40 metres respectively T-Antenna Performance of a T-Antenna Tuned Against a System of Buried Radial Wires A dipole, centre-fed via a twin feeder, can be used as a "T" antenna at LF and VLF, but a good ground system and a physically large tuning coil are necessary to obtain a useful radiating. Reagan Keyla. 99 MBD-Custom You Choose Bands CALL !!!!IMPORTANT NOTE: ALL ANTENNAS ARE SHIPPED VIA USPS PRIORITY MAIL AT A COST OF $12. A 40 Meter Vertical Antenna for Small Spaces This antenna offers good performance in a compact footprint. Cushcraft achieved a major breakthrough in the development of an HF multiband vertical antenna that has been specifically designed for use with a tuner and amplifier. Requires ¼ wave radials for each band or many (60+) short radials. a length of PVC pipe. Discontinued, see Fan Dipole model 3B2080LFAN ***** ***** 3B2080L. 66 Antennas: Vertical Hy-Gain Super Penetrator 10/12 Meter Vertical Antenna CSH-R6000 BNR-3X10 CSH-MA160V The legend from the 1970s is back! $39. I proceeded to make a very heavy dipole from copper pipe, akin to the type used for J-poles. EH Antenna for 40 and 20 meters. It is resonant on 40/20/15/10m (will work on WARC bands/ 6m with tuner) The end fed antenna works well in several configurations including horizontal, sloper, inverted V, inverted L, and vertical configurations. Thanks to VE3BF for this easily-made 20 meter vertical antenna. 5KW power for configurations with 30m Elements diameters 50-45-40-35-30-25-20 Weight 12kg Coil in aluminum tube for a perfect mechanical. A small adjustable "T" section near the bottom allows adjustment of the resonant frequency of the A three section loading coil with capacitance hats for 30, 40, and 80 meters is mounted next to the 20 meter "T" adjustment near the lower end of the antenna. A long distance 6 element base station with 12. Choisissez votre langue. The small ground plane was another scratch build out of a need for a scanner antenna. This video was uploaded from an Android phone. Be aware that any multi band vertical will not be a great performer on 80 meters. If you want 75 Meter operation make it 57 ft long. A 40/30/20 meter vertical on a flagpole. Description. Also a full size quarter wave radiator for 20 Meters. l almost all DX propagation is at low l 40 meters - a very crowded, competitive afternoon and night band. Operation on 20 and 17 meters. The prototype for 2 meters made its first contact of over 200 miles while lying upside down on a picnic table. To the theoretical length. HF Multiband Vertical Antenna 6, 10, 12, 15, 17, 20, 30, and 40 Meter. So far the performance has been great, even though the bands have less than desirable, I have made several QSO’s on 80, 40, and 20 meters and my signal reports have been very good. My noise level most of the time is S7 - 9 until very late in the night it my drop down to a I do not have an antenna for 160 but do listen from time to time. amateur radio band. This antenna is designed for installations with restricted space. Figure 4 indicates that the antenna's SWR is blow 1. You will note that the spacing between the vertical wires is 20 inches for 15 and 10 meters, but 40 inches for 20 meters. For a while I used antennas for other bands with a tuner to get on 30. Multiband 40 - 10 Meter Vertical Using PVC by HI3/KL7JR. 10/15/20/40 Meter Vertical Antenna for Restricted Areas MFJ-1796. The reason why this antenna type is so popular are probably the following: The length is "only" about 5,50 meters This antenna does not require any radials Easy to erect! To construct this antenna most use black markings on the aluminum to judge the length and give the user a satisfying S. To upgrade 4BTV to 5BTV you have to use 1" threaded coupler (3/8" x24 threaded x 1"), the part number is HSR-5648. Most of them tend to stick to vertical antennas with a 1/4 or 1/2 wave For our 15 and 20m verticals we applied 16 radials for each antenna, each radial being about 6 meters long. Without Radials. The following is an update article published in 2014 after I moved from While the loop works very well on 40m (Full Wavelength) and 20m (Double Wavelength), it's This produced a vertical antenna with the loop being a capacitive hat on the antenna and this. Our 5/8 vertical for 20m, during a windy day. l vertical antennas almost always provide. 5:1 over the entire 20m band (14. Unfortu-nately, as you go down in frequency the. Thanks to VE3BF for this easily-made 20 meter vertical antenna. but the winner was a 2-meter base station vertical antenna made from a pair of coat hangers. My first 160 m antenna is a modification of a 20 meter collinear vertical that I was experimenting with. This antenna is designed for installations with restricted space. These antennas perform well in restricted space areas. 122 MHz; 20 Meters: 14. At the top of the line, I soldered a 66 foot, 4 inch wire to each side of the ladder line. You can see my vertical antenna here A multi-band trap vertical antenna for the 10, 15 and 20 meter amateur radio bands. 10-80 Meter portable Model 100W Alpha Magnetic Loop antenna is more EFFECTIVE & EFFICIENT than any other manufactured loop.