Best 80 Meter Vertical Antenna

This is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. See more ideas about Ham radio antenna, Ham radio and Ham. to/2HN6l02 My Amazon Store www. As a ground plane it should be fairly efficient. PBX100-MK2 is a short and light vertical antenna working on all HF bands from 80 to 10 m (including WARC bands according to the ads although some users did'nt reach the resonance on 17m). A half wavelength for 40 meters is 70 ft. Orange line is my road. The length of the radiator is calculated by using the formula 234/Frequency in Mhz, for feet, or 71. The 5K Double Bazooka is the best you can get. good antenna but ive read many reviews and comments and they all seem the same. SSB and 500W CW. The antenna is probably too long. L1 may have a relay-selected tap to permit operation on 80 meters as well. If I was working enough to add or change antennas I would in this order Hy Tower Jr , Butternut , R7 , R5. 2 swr out of the box. As stated before, if the antenna can't be installed at least 1/8 λ (5 meters or 16 ft for the 40 mtr antenna), it should be installed vertically. 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. The best way to prevent damage is to measure power from one antenna to a dummy load while the other transmitter is running at maximum power. The 160 or 80 meter full wave loop (particularly the 160 if you have the room and supports) will load up nicely on several bands without a tuner, and on pretty much all HF bands with a little tweaking from a tuner. 648 Mhz 3rd Harmonic Halfwave in space is: 136. Resonant point changes during wet or icy weather. Expanding on our experience of using the readily available $10 eBay telescoping 17′ fiberglass fishing poles for a vertical support in the Tri-band Vertical Antenna, we are offering a portable 80/60m, center loaded, 15′ long. The settings and performance that I could achieve back then are documented in several blog posts, e. Half as much as the half-wave dipole above. The antenna and gin pole are constructed from 4 inch aluminumum irrigation pipe. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. The antenna and gin pole are constructed from 4…. Which one is better? Laird Antenna Links: amzn. A half wavelength for 40 meters is 70 ft. Since 10 meters and cb (sometimes refered as 11meter) are so close in bandwidth often a cb antenna can be tuned for 10 meter. As a matter of fact, the. Install at least 30-60 shallow buried 125. Example: N6HH has 2. 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. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. It's performance has been excellent for me, much better than any ground-mounted vertical I have used and is often as much as 12 dB (2 or 3 S-units) stronger than my trapped inv-vee with the apex at 35'. These were selected mainly for their compactness and efficiency. A good many of the operators on ham radio on 30 meters use vertical. 80 Meters 2 Element Quad Antenna. well spaced from all nearby tall towers and antennas. I have logged over 800 40/80 meter SSB phone contacts. The antenna is probably too long. This design provides the best performance in the least amount of space. many hams is to erect a dipole or G5RV about 20 feet high, fed with twinlead or open-wire line and matched to the trans-mitter with an ATU. Short vertical antenna for 80 Meters: resource detail. The ground side is a series of radials that all group into a connection at the base of the pipe, and are insulated from the pipe (red part). 40 80 Meter GP Vertical - eHam. My 40 meter vertical cost me $13. There's no other amateur band like 160 meters for those that like a challenge "I have a full size 160 dipole at 300 feet, and it is never really much better than a 1/4 wave vertical at any distance in any direction. The balun will keep stray antenna currents off of the Feedline and help to keep stray RF out of the Radio Shack. Prototype 2 used the following. The base of the Delta Loop is only 10 feet above average ground. 8mhz) is about 38. The Hustler 5-BTV is a five-band trap vertical antenna. In you're opinion which is the best wire antenna for 80, 40 and 20 meter ragchewing? I am using a homebrew G5RV. Background:. Having got the antenna raised to the vertical position, I guyed it with three lengths of nylon twine. Indeed, when a vertical antenna is erected at ground level and powered, there are much ground currents generated by the earth capacitance and resistance that increase the effect of the earth on the antenna losses (associated to losses in the transmission lines, etc) that see its radials running at ground level be completely detuned. Each antenna is installed and tuned to give a 1. For 80 meters it covers 3. good antenna but ive read many reviews and comments and they all seem the same. View and Download Hy-Gain 18AVQII instruction manual online. For comparison the current in the driven element when in omni-directional mode (single vertical element) is 4. This antenna is best when elevated 8 to 10 feet above ground. My inverted-V at 40 ft. Repair Membrane Buttons. RACES within uses 80 meters for NVIS communications within a state. 6:1 continuously from 3. What is the best antenna to use on 160? Misc 160 meter information. 80 Meter CW Center Frequency: 3. Vertical antenna ham radio 80 thru 10 meters. It is difficult to get a horizontal antenna (dipole) high enough to be an effective antenna on 160. We're in the process of moving to a new area, and while there are no real restrictions (other than the YL)about beams and towers, my builder has suggested that to keep peace. 40 80 Meter GP Vertical - A vertical antenna for 40 and 80 meters band with no need of antenna tuner, based on a telescopic fiberglass mast of. DX Engineering still caries it, and it's variations. K5LAD's Assorted Ham Stuff "I can’t work 80 meters, I don’t have a good 80 meter antenna" How many hams have made a statement like the title of this piece? Quite a few, I’d be willing to bet. The following chart plots the current in each element across the band segment. Indeed, when a vertical antenna is erected at ground level and powered, there are much ground currents generated by the earth capacitance and resistance that increase the effect of the earth on the antenna losses (associated to losses in the transmission lines, etc) that see its radials running at ground level be completely detuned. Dual Band Vertikal Antenna 40/80mt, DB9EX Choke-Balun with RG223U on Amidon core, radials still missing for better view to the Balun. There are times, however, where a shortened vertical for the lower HF bands (such as 80/75 meters) is necessary where horizontal space is lacking. Wire Antennas that Work. I now have individual 80 and 40 meter NVIS antennas. Most can be built in a day and can let you call "CQ DX" effectively on HF. Just a happy few build To illustrate the differences in antenna length I performed several simulations with different antenna After studying different types of verticals we concluded that the 5/8 would be the best vertical for our. DX performance > 1/4-wave vertical 60-15 meters, but 5dB down from 10 meter ¼-wave vertical at 10 degree take off angle (but higher Rr compensates some) Really needs base matching on 160/80-meters Regardless of what the 43-foot antenna vendors say Example: With Rg = 10Ω, 160 Meter SWR = 324:1, 80 Meter SWR = 41:1. In you're opinion which is the best wire antenna for 80, 40 and 20 meter ragchewing? I am using a homebrew G5RV. 40 metres did require the assistance of an antenna matching unit, but this was not needed on the 20 metre band. DX Engineering still caries it, and it's variations. Vertical antennas require a good radial wire system. W9BVX’s Helium Balloon Vertical Antenna. Eagle One. In laymans terms, the coax length fools your SWR meter into thinking that your SWR is different to what it actually is !. Currently, I am end feeding a slope top-fed 1/4 wave on 80 meters. 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. There is no such think as the best vertical antenna. - 60 ground radials will yield 80% of the the professional. It’s best to find resonance on any antenna, but I’ve also found that there are sweet spots that work for different other ham bands. These were selected mainly for their compactness and efficiency. Not an optimal length. DX performance > 1/4-wave vertical 60-15 meters, but 5dB down from 10 meter ¼-wave vertical at 10 degree take off angle (but higher Rr compensates some) Really needs base matching on 160/80-meters Regardless of what the 43-foot antenna vendors say Example: With Rg = 10Ω, 160 Meter SWR = 324:1, 80 Meter SWR = 41:1. Long Wire Antennas Look at the long wire antenna on the roof. ZeroFive-Antennas 43GP Multiband Groundplane 10-80 Meter Freestanding Vertical Antenna. DX Engineering 80 Meter Full Size Quarter Wave Vertical Antennas have a bandwidth that is outstanding—up to 528 kHz under 2:1, depending on your radial field. The CAROLINA WINDOM® 160 comes to the rescue. Antennas for 160. 544' is comfortably resonant at 1. Most of the verticals presented in this section,. There are numerous reasons why people shy away from trying to put up a good antenna for this band:. In conclusion, verticals for 20 meters and above may well be good performers and I'll certainly have a bash at a 20 meter version of this shortly but for 40 meters and below, be clear about what they'll do for you. You should use vertical polarization if you wish to communicate with existing FM mobile and repeater stations, because they also use vertically polarized antennas (by On the other hand, you should use horizontal polarization if you are attempting 2 meter SSB or other types of DX/weak-signal work. AlphaAntenna. 20/40/80 Meters Vertical Antenna 17, 30, and 60 Meters with these MFJ Stealth WARC Band Vertical Antennas. 850 feet of 12 gauge stranded (insulated) wire 6 inch PVC spacers on the 40 meter band 4 inch PVC spacers on the 30 meter band 2 inch PVC spacers on the 20 meter band. Accutane Cost Per Pill - Free Worldwide Shipping. I then straightened each wire as best I could, but they still weren't straight. They perform well in many cases and for the low frequency bands such as 80, 40 and 30 meters, they are not competing with directional antennas so everybody can be on a level playing field. - 60 ground radials will yield 80% of the the professional. telescoping masts are often used for the vertical element, which can be easily purchased from most radio and hobby stores. The formula for a calculating the length of a full wave loop antenna is: Length (feet) = 1005/f MHz. 18AVQII Antenna pdf manual download. Perfect for all HF modes including, but not limited to, CW, SSB (USB/LSB), AM, etc. You may contact us by e-mail. - 60 ground radials will yield 80% of the the professional. As a result, we often turn to vertical antennas for our DX solution. While this certainly was a huge improvement over my humble Butternut multiband vertical, my new tower had a major shortcoming a lack of antennas for the low. Other options are available at USDipole. Antennas at this frequency are large: A quarter-wave vertical, for example, is approximately 65 feet (20 meters) high. There is no such think as the best vertical antenna. 900 MHz = Flat match 4. A physically short broad-bandwidth multiband vertical antenna with 50 ohm input impedance and 25 foot square footprint for 160, 80, 40 and 17 meter radio bands. DIAMOND BB7V Multi Band Vertical Antenna A couple of videos from Waters and Stanton looking at the Diamond BB7V Vertical Antenna for 2-30Mhz. i'm always impressed with simple dipoles and always resort to throwing them up. Can also access the #1 antenna via the Twin Turbo. Best 10 - 80 Meter Ham Radio Vertical Antenna. The KJ4IIF 75 METER 1/4 WAVE COW PASTURE VERTICAL "Barn yard 75/80 meter DX fun". 5 out of 5 stars 10 product ratings 10 product ratings - G5RV Full Size 102 Feet 10 to 80 Meters Superior Poly Weave Wire Antenna/Aerial. I have been using an 80 meter loaded vertical for a couple of years with moderate success. It isn't easy to put out a respectable signal on 160 meters. I guess what I’m trying to say is that even though the 43-foot vertical looks like a simple, easy to implement do-all antenna, it tends to work effectively really only on 80 and 40 meters, and it tends to fall off pretty drastically on 20 and above. Mounted on my deck temporarily with no radials or counter poise, so I am sure a better installation will improve the numb. Re: Best vertical HF antenna Post by mangina » 23 Mar 2013, 18:04 Yep a doublet is also a great antenna and can be made very cheap even with open wire feeder as this is easy to make and is not critical in the spacing of the wires. This article was written to discuss the use of an 80 (or 40) meter dipole efficiently on 160 meters. ably single-band solutions. The SE HF X-80 is an end fed aluminium vertical antenna, capable of allowing the user to work 80 metres through 6 metres bands using an ATU, also not requiring any counterpoise and can Please use a good quality 50 Ohm coax, RG-213 or Mini 8 are probably the best choice. These values assume that the antenna tuner is placed at the feed point of the antenna and that a suitable ground is provided. Other antennas for 160 are discussed elsewhere on this web site. You might also consider removing HF combinations such as 40/15 meters and 80/30 meters. Mounted atop a Scorpion 680, the antenna can be tuned from 80 through 17 meters. QRPGuys Wire Antenna Trap Kit. The total height of this antenna is 33 FT,the coils were make from 1/4 aluminum tubing. LOWERING any antenna most always increases ground loss. 250 before rising to 2. 80-160 antenna for the small garden. Vertical Radiator made of aluminum tubes in diameter 20- 35- mm. The loading coil is wound with 12 gauge bare copper on. As I said, I do not use 80 Meters much, (as of 2014 I have started using it more on 80), but the little use I have had has been good for DX, and bad for local, which is to be expected in a vertical. 095 foot length between the SWR meter and the antenna. Boom = 30 in/76cm; sprial radiating element = 30 in/76 cm diameter; weight = 4 Lbs/1,8Kg. Five Band Vertical Antenna 10, 15, 20, 40, 80 Meter. The loading coil is wound with 12 gauge bare copper on. We're in the process of moving to a new area, and while there are no real restrictions (other than the YL)about beams and towers, my builder has suggested that to keep peace in the area, don't put. With an IP67 rating and weather sealing, this antenna suited to internal. 11 1040 foot beverages. Having got the antenna raised to the vertical position, I guyed it with three lengths of nylon twine. The formula for a calculating the length of a full wave loop antenna is: Length (feet) = 1005/f MHz. This vertical antenna has no lossy traps or coils to burn out. This antenna performs well in restricted space areas. Vertical antennas require a good radial wire system. The 80 meter Delta Loop is mounted in a vertical plane. I had settled on a vertical of sorts being that the average sized lot I live on wouldn’t allow a decent wire antenna system. A high-performance 80/40 Meter vertical. Cebik W4RLN) seem to point to best performance on 40-meters at 0. In my neighborhood is having a dipole or other wide I decided to make a trapped 80-160 meter vertical dipole with the feed point at 11 meters. - Portable Vertical Antenna for 75m and 40m makes up a compact 28 feet high antenna. On 40 meters, for example, a¼-wavelength vertical antenna is a metal tube or wire 33 feet high. 53 foot ground radials Five eights wave Vertical is: 169. 3λ – 40 ft on 40M – 80 ft on 80M – 160 ft on 160M • “Good” means efficient. It's a great way to join new local nets and roundtables, explore the 75-Meter DX window, or add exciting digital frequencies to your operating repertoire. At the higher HF frequencies, antenna sizes drop to 8–16 feet but. This vertical antenna has no lossy traps or coils to burn out. October 2011 My 6 – 40 meter end fed arrived through the UK holiday mail and I departed from my norm of a sloper and. Finally, a mast mount version of the 11 meter "collinear" CB antenna is available. This antenna works great, glad I spent the time sprucing it up. 80/40 Meter Attic Antena I live in a tightly packed urban neighborhood without much room for antennas. The SWR in the shack is about 1. : 160 M Antennas. Overall Transmitting Antenna Layout. Other 160-meter antennas. Any adjustment made. This started out being a stelth antenna for a friend. Manufactures antennas, SWR meters and power supplies primarily for the Amateur Radio market. The Ultimax-100 consists of a robust matching network which can handle 1500W P. COM A freestanding vertical for 80 meters ,It is a full 1/4 wave 67 foot tall. The built in tuner in the KX3 handles whatever tuning may be needed. Getting a signal on 30 meters requires an even bigger antenna but you will find the size is still manageable as a dipole. To determine the resonant length of the wire, we use the formula: Length (in feet) = 1005 divided by frequency (in MHz), multiplied by the velocity factor of the wire used. I then mounted the antenna to a fence It tends to hear about one s-unit better than the dipole antenna. George, WF4U, raising a 65 foot 80 meter vertical antenna at his Lewiston, Utah QTH while two helpers stand by. 40m-10m DELTA LOOP ANTENNA - GU3WHN AIM 4170C Antenna RF Analyser results for the GU3WHN 40m Loop The following pages have a GAL-ANA model of the GU3WHN inverted Delta Loop. Shop HF vertical antenna packages, including monoband and mulitband options at DX Engineering. An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters John DeGood, NU3E [email protected] The formula for a calculating the length of a full wave loop antenna is: Length (feet) = 1005/f MHz. Get an amplifier and become the big signal on your 75 meter net. For 80 meters it covers 3. Quarter-Wave Vertical Antenna Length Calculator. and has a wind load of just 2 square feet. Super wide bandwidth means more time operating ,and less time stuck on a frequency your trap vertical is tuned for. , 1/4 wavelength for 80 meters is 70 ft. If my antenna is 65 feet away from my radio, I need a 14. Vertical antennas are very popular for HF operation because they fit in well to a small garden. 5/Frequency in Mhz, for meters to make a 1/4 wavelength, at the desired frequency. 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. At this time many. 2 swr out of the box. HamRadio) submitted 2 years ago by theeril Hi,can anybody recommend a antenna that fits these guidelines: 80 to 6meters without a tuner. High Performance Transmitting Antennas for 160 Meter DX. The bad reviews included reports of missing parts upon shipment, sometimes shoddy craftsmanship (holes not lining up, burs. When I constructed it, I used a capacitance meter from each side to ground while adjusting end heights to get the same C with respect to ground. Hi there, one of my friends and subs wanted to see a video of how well the SE-X80 broadband vertical antenna tunes uup from 80 to 6 metres. Antennas for 15 Meters Antenna: 15 meters, Range: 21 to 21. 80M Vertical Antenna with Capacitance Hat. It's a dipole fed off center with a 4:1 current balun at the offset feedpoint. The best RF transmission system consists of matching impedence across all sections. The plan is to remove the ring and connect 4 x ¼ wavelength radials for each band. The balun will keep stray antenna currents off of the Feedline and help to keep stray RF out of the Radio Shack. Boom = 30 in/76cm; sprial radiating element = 30 in/76 cm diameter; weight = 4 Lbs/1,8Kg. The front-to-back and forward gain are outstanding. I left out the Hy Tower Sr. An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters John DeGood, NU3E [email protected] The element and radials are made from T-832 Drawn aircraft aluminum tubing. One winter night, I was heard in India using about 500 watts output There is some mythology about NVIS or Near Vertical Incidence antennas. Each antenna is installed and tuned to give a 1. We also have a 40 meter 4-square antenna to augment the other 40 meter antennas. - Uses elevated radials for higher gain. Gray = 8 for 80 meters, Blue = 6 for 60 meters, Yellow = 4 for 40 meters. 40 Meter Four-square. The top is 23 meters high and goes to the right to a pole on the roof of the house. Browse our daily deals for even more savings! Free delivery and free returns on eBay Plus items!. Contact one of your local Diamond ® Dealers for current price & availability. Maybe someone can clarify: I hear stories that the Hustler CG-144 2 Meter whip is also usable as a 1/4 wave for 10 Meters. HamRadio) submitted 2 years ago by theeril Hi,can anybody recommend a antenna that fits these guidelines: 80 to 6meters without a tuner. 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. Currently, I am end feeding a slope top-fed 1/4 wave on 80 meters. There will be some loss in the coil versus a full 1/4 wave vertical ground plane, but this is a large diameter, 10 turn per inch, heavy coil - so losses shouldn't be too bad. My configuration is inverted-vee style with the apex at 80 feet, the ends about 25 feet high. Since 10 meters and cb (sometimes refered as 11meter) are so close in bandwidth often a cb antenna can be tuned for 10 meter. Posted by Hank Koebler on 30th Jun 2015. Full sie quarter wave radiator for 40 Meters thats 33 feet of ruthless radiating power. Can also access the #1 antenna via the Twin Turbo. Opened for inspection, these two entry-level Chinese 80-meter ARDF sets have similar direct-conversion circuits. It's performance has been excellent for me, much better than any ground-mounted vertical I have used and is often as much as 12 dB (2 or 3 S-units) stronger than my trapped inv-vee with the apex at 35'. High Performance Transmitting Antennas for 160 Meter DX. Overall Transmitting Antenna Layout. Being a half-wavelength on that band, the antenna pro-vides an efficient low-angle radiation pattern, with roughly a dB of gain over the shorter standard quarter-wave vertical. 27 twinlead Quarter wave in space is: 68. The CAROLINA WINDOM® 160 comes to the rescue. in total length. tall (1) Loading. A few of the bands are out of the designated ham bands and show the antenna to be too long. Diamond ® Antennas are sold through authorized dealers. This started out being a stelth antenna for a friend. The mount is isolated from the vertical element by plastic spacers. 0 and 6 a 2. For maximum power transmission, 50 Ohm coax cables are used to match the RF PA's output impedence. This antenna is EXTREMELY easy to assemble, requires no tuning or adjustments and VSWR is under 1. Antenna works fine at 40- and 20- meter Bands. The CAROLINA WINDOM is the antenna that has helped put many 160 and 80 meter stations on the map. For example: a normal GPA is able to produce angle's in the order of 16 degrees when it is sitting at the ground, a horizontal placed dipole has to be at 9 meters to does the same thing. efficiency is obtained at the 10 to 15 foot height for frequencies in the 40 meter to 75 meter range. The effective diameter is approximately 5 feet. It provides for all-band operation from 80 through 6 meters continuously with just the use of an antenna tuner. A high-performance 80/40 Meter vertical. Description: The NEW 6-80 meter groundplane vertical antenna is a rugged multiband vertical antenna. On 40 meters it is either a CW Band or Phone Band antenna. In laymans terms, the coax length fools your SWR meter into thinking that your SWR is different to what it actually is !. Full sie quarter wave radiator for 40 Meters thats 33 feet of ruthless radiating power. Vertical antennas have always been a problem because of the limited space for a radial system. I started by building a 40 Meter 1/4 wave vertical using aluminum tubing, then I made a second one to Phase with the first one. A tall order indeed! The radiating element of a vertical monopole antenna is basically half of a dipole. 6:1 continuously from 3. 7m C&ku dual band dish of our company consists of antenna reflector, support mount and the feed. If we really wanted, we could have had full size verticals for 40 and 80m. I guess what I’m trying to say is that even though the 43-foot vertical looks like a simple, easy to implement do-all antenna, it tends to work effectively really only on 80 and 40 meters, and it tends to fall off pretty drastically on 20 and above. On 80 meters the antenna has about 40kHz of 2:1 bandwidth and 60kHz of 3:1 bandwidth. performs well, but is “a cloud burner,” good for local contacts within 500 miles. In the summer of 2010, I decided to construct a 1/4 wave 80 meter vertical using 3" OD Aluminum Tubing. A good many of the operators on ham radio on 30 meters use vertical. This vertical antenna has no lossy traps or coils to burn out. Generally antennas that are installed physically high up tend to have more of their radiated energy leaving the antenna at a lower. That's right. The performance of vertical antennas lends itself well to many applications - in mobile applications their omnidirectional performance is key. 00 is now $95. The front-to-back and forward gain are outstanding. 1:1 with a couterpoise, the bandwidth depending on band. 8mhz) is about 38. In the process of tuning the antenna, it is mandatory that you always start with 10 meters and work your way up the antenna. You might also consider removing HF combinations such as 40/15 meters and 80/30 meters. Background:. Page 121 of MFJ new 2013 ham catalog Hy-Gain's PATRIOT HF vertical antennas are the best built, best performing and best priced multiband verticals on the market today. The formula for calculating the approximate length of a quarter-wave vertical antenna is:. vertical antenna, meaning that vertically polarized loops close to the ground will not work well over poor soil. 80 TO 6 METERS END-FED ANTENNAThe Ultimax-100 antenna is designed with the H. by Gene Preston, K5GP I read Rick Littlefield’s article in the June 2008 issue of QST on off center fed dipoles and was intrigued by the idea that the antenna could be extended to cover 80 meters. 20 Meter Zero Five 5/8 Vertical Antenna vs Dipole, K7PP. So I have tried a couple different portable QRP antennas, in my search for the best QRP antenna. i'm always impressed with simple dipoles and always resort to throwing them up. A proper ground system for a quarter wave or similar vertical antenna is about 120 radials, evenly fanned out from the base of the antenna, each a bit longer than 1/4 wavelength (. The BigIR max height is about 32 feet or about an 1/8 wave antenna. Continue reading 80 Meters and Up - Portable Base Matching Unit for 42 to 48 Foot Verticals and Naturally, these antennas are worked against a proper counterpoise radial system for decent Below are presented the results of actual measurements as well as EZNec modeling of both a 90 ft long. With "short" I mean between 3 and 10% of λ. For 80 meters, I connect the opposing walls giving me 2 “L” shaped legs of the dipole. 80 Meters frame antenna Frame antenna for 80 and 160 meters band. G5RV Full Size 102 Feet 10 to 80 Meters Superior Poly Weave Wire Antenna/Aerial 4. Has 120 buried radials. BY KD8OUT, Mike Kieffer. Transmitting Antennas The 125 foot vertical: the 160 meter gold standard at least 30-60 shallow buried 120 foot radials 4-square arrays of phased 125 foot verticals very high performance for both transmitting and receiving at least 30-60 shallow buried 120 foot radials for each vertical Tall towers and antennas will significantly degrade the. 8mhz) is about 38. An effective antenna is usually at least ¼ wavelength in some dimension. I currently have an 80 meter doublet installed at about 30 feet above ground. For example ground wave propagation, used for LF and some MF transmissions is often better when a vertically polarised antenna is used. The total length of the wire is 88 feet. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. They perform well in many cases and for the low frequency bands such as 80, 40 and 30 meters, they are not competing with directional antennas so everybody can be on a level playing field. The overall wire length in my situation is about 60 feet when running a closed loop based on a room size of 12’ x 12’. True open wire line. This antenna includes the RM-80S resonator and the 4457-1 three blade spider assembly. I have also done some testing using the Reverse Beacon Network to compare the two antennas. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. L1 and C1 are outside the house at the antenna food point in a weatherproof box. Well the only way I've been able to achieve that was. 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. What’s more, with proper matching, it also performs very well on the 20 meter band. The 43 foot antenna uses an antenna matcher (tuner) somewhere in the transmission line to offset the non-resonant impedance; This is the case for all bands except, possibly, the 60 meter band where 43 feet is close to a quarter wave. This started out being a stelth antenna for a friend. Typically has 6 db (approx), over any other 5/8 wave antenna. I now have individual 80 and 40 meter NVIS antennas. other, you can retune the antenna to provide the lowest SWR in that portion, if desired. I left out the Hy Tower Sr. 160/80m Coaxial Receiving Loop Antennas Receiving loop antenna for top band. I've read good reviews and bad reviews. W5WAA HAS A FEW INTERESTING THOUGHTS ON THE G5RV 80-10 METER ANTENNA Joe, I'm enjoying the 80-10 G5RV antenna I purchased from you a couple of months ago, it is far superior to the Cobra 140' antenna it replaced, best wire I've ever owned.