160 Meter Random Wire Antenna

A Broadband Butterfly Terminated Dipole Antenna BBTD Inverted V optimized for the 1. An inexpensive way to begin is to build your own antenna tuner. It can be designed for use from 160 thru 10 meters very easily using the standard 1/2 wave dipole formula: and use it as a random wire antenna with the tuner and. I remember using a 10 meter Sterba Curtain several years ago at a local DX-pedition and found the performance excellent. Shop our selection of Alpha Delta wire antennas, including multi-band sloper antennas for limited-space applications and SWL antennas for superior performance through 30 MHz. Simulation. At least three “experts” tried computer modeling the antenna. That means that the matching characteristics of, say a 40m EFHW will be very similar to those of a 20m EFHW. By varying the length of the 450 ohm ladder-line feeding the antenna, we can achieve an SWR of less than 2:1 on all frequencies on all HF bands with the exception of the lowest part of 80m. Will tune coaxial cables, random length wire and balanced open wire transmission lines. On this episode, we announce the winners from the 100 Watts and a Wire Fall Out. The Balun on the end matches the 450 Ohm Open Wire Line into a 50 Ohm Coax Cable. Incredibly long (~225') Random Wire Antenna (works on 160) This antenna came about because I was given a large roll of 24 gauge wire, and I really wanted an antenna I could tune up on 160 meters. The graph in Figure 7 has been produced with data generated from 4NEC2 antenna modelling software for an antenna wire of 18. Then make up as neat as you can 5x IN4148 diodes in series. I just like to get as much wire up as high as possible and work all bands I can with an ATU. The antenna I am using is just a random wire antenna end fed. I'm currently using a ¼ wave slopper fed against my 48 ft tower. This is an End Fed Long Wire wire antenna that will cover all bands from 160 to 6 meters, including the WARC Bands, as well as 60 meters and MARS frequencies. One feature that I added was the ability to short the two ends of the open wire feeder and run it against the limited "ground" connection which consisted of the copper pipe run for the water feed. So go for a 21 meter long antenna or if you have the space, go for a 43 meter long. 8MHz to 30MHz frequency range For better performance on the 160 meter band, a dimension drawing for a larger version is presented below. I had some spools of #22 AWG hookup wire in the garage, a package of push pins in the shack desk drawer, 10 ft/3. The first relies on the fact that from the end of the antenna a length of wire on or two half-waves long looks very similar. random wire antenna tuner. Even number quarter wave lengths (half wave multiple) do not. Now, you can get a map or a poster with the 100 Watts and a Wire logo. DX Engineering is your #1 source for wire antennas. By Guy Atkins. This puts less of the antenna parallel with the ground and increased the effective height. CAUTION: Remove this wire for other frequencies on single wire. But, they do want at least a 4 foot ground rod into the earth. The performance of this tuner was nothing short of spectacular on FM; the AM side was even more impressive, as it was designed to have an audio bandwidth of 20 Hz - 15 KHz -- the same as broadcast FM!. Here in the Netherlands it’s called “VD draad”, this wire has a velocity factor of 0. Let me know what to do with the dipoles is the fan dipole as good as the single wire. Zero Five 50ft vertical; Surprisingly easy to walk up! Mounts to a 3" concrete-based fence post; 150Lbs of conrete and one windward guy rope. Hello everyone. Anything shorter becomes a challenge to match on the upper bands and increases the. Half Delta Loop Antenna. The center loaded wire I had for 160 meters required to much maintenance, so I did not repair it after it blew down the last time…. A water table close to the surface, especially sea water is a very good ground base. The left side red circle is drawn around the tower that holds my Sommer Yagi antenna, and also an 80 meter invered vee. 8MHz, thiswould be ~273 feet at minimum. It is the only article that incl A Small Wire Loop Antennas for 160 meters - Low noise, receive only coax loop antennas for 160 - 10 meters HF band Cheap antenna to make from 160m - 6m - The antenna is nothing more than a simple 2. West, Toronto Ontario M3N1V7 Tel: 416-667-1000 [email protected] I have a fan dipole for 160,75,40 meters cut to length on each leg to have low S. Will tune coaxial cables, random length wire and balanced open wire transmission lines. I have a pretty large backyard, but no trees. The FC-40 is a microprocessor-controlled antenna impedance matching network designed to provide all-amateur-band transmitting capability with the FT-897/857 Series of transceivers, when used with an end-fed random wire or long whip. You can spend about $25 to turn the Jackite 31′ pole into an all-band HF Antenna that will give you all bands between 80 and 10 meters, without a tuner. A small yard is definately a problem. Most of the general action is somewhere between the 20 meter band and the 40 meter band regarding shortwave and ham band listening. random wire, beverage etc. Not sure what it all is, but there are some very large capacitors in the box. I've seen a lot of traffic on the "random wire" topic. I drove an 8'copper ground rod below the Balun for static drain and lightning. Feed square and rectangular loops at a corner. 6-160 Meter J-Pole Jr 34 foot End Fed antenna A combination of antenna designs, namely the J‐Pole and Zepp along with Alpha Antenna's matching network technologies, are utilized to achieve a fairly Ham Radio Antenna Portable Battery Wire Headphones Cable Tape Measure Body Parts Ham Radio Cabo. This virtually guarantees that your coax braid is functioning as a random wire connected to one side of the loop unbalancing it electrically. Amateur Wire Antennas : Hy Power Off Center Fed. I should have mentioned this in the previous posting: If you have an 80 Meter Dipole - even a "trapped" or "loaded" model - you can use it for operation on 160 if you configure it "Marconi style". 1 Simple Wire AntennAS 10. The antenna wire will be thin stranded copper 260 feet long. It has a switch half way, to reduce the length of the wire to 16 ft (4. I’m currently using a ¼ wave slopper fed against my 48 ft tower. The wire diameter here is the wire that you use as the antenna element, not the inductor. It is easy to construct a dipole. 800 (lowest 160 meter frequency inMHz) = 558 feet. In part one of this series, I covered the use of one brand of commercially available, small transmitting loop antennas, also known as ‘magnetic loops’. Tie-wraps to mount the wire to the mast. Executive summary: It works and reduces radial wire maintenance drastically. If you want read more technical etc. While this loop antenna will not outperform a yagi or a 4 square, it is a decent all-around antenna. Aug 7, 2019- Explore centerfirenotw's board "homebrew antennas" on Pinterest. negative lead is grounded inside the tuner. 160 Meter Longwire for Limited Spaces; Hi Pete, Good article, I use a similiar random wire, long wire what ever and it works well on top band. 134 - Taylor Vee. All you need to do is enter the desired resonant (center) frequency in the form below, then click "Calculate". The 1/2l dipole radiator (driven element) is 10 m long or so. But performance is down about 8-12db on a dipole on 80m. 80 meter band could even be tuned but is useless in term of radiation efficiency with my current antenna, just useful for RX. Baluns and RF Chokes: Ham Radio Q & A Episode 3. Connect the antenna wire to the antenna terminal. Four variation of a random wire antenna with a length of 18. First take the set apart as per the no side tone mod. It's up to the designer to select the best design for the job at hand and to utilize that design in the most efficient way. MFJ-16010 Random Wire Antenna Tuner, 200 Watts, 160 - 10 Meters. Many people use what is referred to as a "random length" wire antenna for HF, quite effectively. She's ready to go and needs no repairs. Dipole Antenna - Balun 9 13. A single turn of insulated wire (wire size is not critical) is placed inside the hula hoop and this is resonated with C1 , a 365 pF broadcast variable capacitor for operation on 80 and 75 meters. A "long wire" antenna is generally one that is long enough to exhibit appreciable gain over a half-wave dipole. You can see the 40m wire with the insulator in the upper center of the photo. AM Antennas - The ultimate AM loop antenna article. The MFJ-16010 is a variable L-network random wire antenna tuner designed to match the low output impedance of your transmitter to the high impedance of a random wire (or vice versa). The wire is simply laid on the ground, pointing away from the direction of the antenna wire. I've seen a lot of traffic on the "random wire" topic. This antenna should be considered experimental. The first wire I put up was probably about 60 or 62 feet long and my plan was to trim it incrementally in order to optimize SWR. The following ramble is from someone who doesn't care about SWR or resonance when it comes down to full wave, multi band large loops. The dipole can be whatever size will fit, and the tuner will do what it can. Swr on my meter is less then significant even with no tuner. I'm trying to design a 160m End Fed long wire antenna. On the receive side, the standard 160 meter antenna is a Beverage of some form. The high Q of small loop antennas rejects strong out of band stations that can bleed-through in more conventional random wire or even dipole antennas, so improving reception performance. 8 – 30 MHz and connects between your rig and a random length of wire or a connecting ground wire. Random-length loop antenna for 160-40? The plan would be to use it mostly for NVIS work on 160 through 40 meters, open wire line works great. It is the only article that incl A Small Wire Loop Antennas for 160 meters - Low noise, receive only coax loop antennas for 160 - 10 meters HF band Cheap antenna to make from 160m - 6m - The antenna is nothing more than a simple 2. 4 metre square loop drawin. At least three “experts” tried computer modeling the antenna. MFJ-16010 Random Wire Antenna Tuner, 200 Watts, 160 - 10 Meters. As for the theory of operation, it remains a mystery. In you're opinion which is the best wire antenna for 80, 40 and 20 meter ragchewing? I am using a homebrew G5RV. The 40m CW antenna seen from the north side of the tower. With everything in place I started testing the SWR with my RigExpert antenna analyzer. 6-meter antenna connectors and the TUNER button activates either the built-in auto-matic antenna tuner or an optional random wire external tuner. I was thinking of trying a random wire antenna fed with a 9:1 unun. Those who have used the antenna on 160 say the “GI Mystery” antenna is a quieter receiving aerial compared to other 160-meter antennas. coax input connector is a so-239 [ uhf female ]. All the gobbly gook and being scared off to try I took the info from an old 1940s hand book and built a 1/2 wave single wire end fed antenna for my vintage stack. This is an End Fed Long Wire wire antenna that will cover all bands from 160 to 6 meters, including the WARC Bands, as well as 60 meters and MARS frequencies. Maybe it does but you'd never know it from my score. The wire can be wrapped up small and the whole thing fit into quite a small space. 129 - 2m Vertical Wire Antennas. Dipole Antenna Calculator. As typically installed, it is a compromise antenna but great for portable use because it is easy to pack and easy to install. Usually any wire length that is non resonant on the band or bands desired will work with the 4:1 ratio. 8 to 30 mhz. Connect any earth or counterpoise connection to the earth terminal using the wing nut. 55' Vertical Antenna For 40/80/160 Meters; 7 element Yagi for 20 Meters band; 80 Meters 2 Element Quad Antenna; 80M Vertical Antenna with Capacitance Hat; 80m Loop EZNEC Analysis; A $50 Beverage; A 160 meter antenna for small lot; A Novice Multiband Vertical Antenna; A Practical Antenna for 160 Metres; A multi-band super mini loop antenna; A. 130 - Earth-Mover Inverted-V Antenna for 40m. Wire Antenna Design Lengths. Specifically, I was hoping that my homebrew antenna tuner would improve my signal to noise ratio on the aforementioned bands. Even on 80 meters, where. 3 swr at either end of the band 80 meters at 3. A Broadband Butterfly Terminated Dipole Antenna BBTD Inverted V optimized for the 1. END FED "RANDOM WIRE" HF DIPOLE 9:1 ANTENNA. Quarter Wavelength Vertical Antenna 7 9. Can't wait to try the random wire on the next Sprint. However, Beverage antennas are generally about 500 ft long. The 10k resistor is simply a dc path to reduce static buildup and discharges from the antenna. It is the only article that incl A Small Wire Loop Antennas for 160 meters - Low noise, receive only coax loop antennas for 160 - 10 meters HF band Cheap antenna to make from 160m - 6m - The antenna is nothing more than a simple 2. Viewer Request - My home HF antenna solution, 160-10 on a small. Despite all the words and diagrams in handbooks over the years, newcomers still send me questions about the antenna. All-Band Doublet L. place the jumper across the terminals as above. note: when using balanced feed antenna systems. I then visited most of the big antenna internet sites that had modelled small loops. Then connect one side of the meter to ground and the other side of the meter to a short wire (one or two feet long) that rests near the antenna wire from the transmitter. Delta Loop Antenna. A dipole design for the 20-meter band is an efficient and inexpensive antenna for the novice and veteran ham enthusiast alike. 800 (lowest 160 meter frequency in MHz) = 558 feet. Jerry Sevick and are hand wound with best available components to provide highest possible efficiency. Plus, CQMaps is back in business. How to build a mono band 80 meter 1/2 wave wire antenna. I have also programmed this but find that it gives inductor values about 40% higher than this calculation. It has a switch half way, to reduce the length of the wire to 16 ft (4. Long wire antennas are typically horizontal antennas, fed at one end, and well over 1/2-wavelength long at the lowest operating frequency. END FED "RANDOM WIRE" HF DIPOLE 9:1 ANTENNA. ( the 40m vertical antenna was detuned by removing 1. If I were to install another G5RV Antenna, I would want 80 through 6 meter RF coverage as we are entering the downward Sunspot Cycle and the most active bands will be 40, 60, 80 and 160 meters. So a symmetrical antenna has to be the choice (so no verticals needing radials). Someone else who built one and found it works gave it the name "non-resonant twin wire". Even number quarter wave lengths (half wave multiple) do not. Vitrifrigo C130l-c130la Black Refrigerator-freezer 130lt 12/24v External Unit Ai - $1,251. The Marconi radiator is resonant to any odd multiple of a quarter-wave length. Random Length Radiator Wire Antenna. Fun Fidger Spinners, Fidget Cubes, and more. Resources listed under antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. It will match almost any random length of wire to any transmitter from 160 thru 10 meters. MFJ-16010 Random Wire Antenna Tuner, 200 Watts, 160 - 10 Meters. The Top 5 Backyard Wire Antennas (in no order) by L. It performs well and excellent on 20 meters but I noticed my 20 meter aluminum dipole seemed to get a better signal on 20 than does my G5RV. My property is heavily wooded, so finding a clearing in the direction I wanted was tough. The antenna as fed, matches reasonably well into a 50 Ohm Coax Cable Feedline. The following program will calculate the lengths needed to construct several popular wire antennas. While dipoles are very efficient antennas, they are not the only way to go. In fact, my 80 meter loop antenna could be tuned on 6 of the 8 bands with just the. The privacy fence also acts as an anchor for one of the legs of the Stealthy Delta. Place a 1:1 Balun on the Antenna end of the Feedline. But performance is down about 8-12db on a dipole on 80m. We've never burned one up! You can select two coax antennas (directly or through tuner), balanced line/ random wire, or built-in dummy load. Power can be fed to the wire on practically any frequency using one or the other of the methods shown in Figure 10. 20 meters swr 1. Delta Loop Antenna. Antennas for 160 meters on a standard half acre (~100 x 200 ft) suburban house lot pose quite a problem. 160 meters band antenna is a curation of 141 resources about , 160m Vertical, Vertical antenna for 160 meter, 160m DX Mobile Aerial, Hex-Shaped 160 Meter Receiving Loop, The K7TJR Array 160m antenna. I find that an end-fed half-wave is a great holiday antenna. The selectivity can be varied by adjusting the antenna coupling and a 4 kHz bandwidth is achievable. Super-Sloper Antenna. Acquired in 2014 by Alpha Antenna, the S9 Antennas have been completely improved and resigned. It performs well and excellent on 20 meters but I noticed my 20 meter aluminum dipole seemed to get a better signal on 20 than does my G5RV. 5 meter fibre mast by DX-Wire, secured with PVC tape. The graph in Figure 7 has been produced with data generated from 4NEC2 antenna modelling software for an antenna wire of 18. Anguera, and C. Bob Holowenko and a pile of random wire, including a fence, make for a fun little antenna. I just wished that an addition of a 160 meter element with some way of widening the 80 meter bands was possible as well as adding a 6 meter element. "Running it with an earth wire to a stake and a counterpoise my field strength meter shows that it isn’t too bad though. 83 coax|219. This calculator was adapted from the Coil-Shortened Dipole Antenna Calculator. I should have mentioned this in the previous posting: If you have an 80 Meter Dipole - even a "trapped" or "loaded" model - you can use it for operation on 160 if you configure it "Marconi style". The AM-7152 also does some DC power conditioning. A long wire antenna is defined as one being at least 2 wavelengths long at the operating frequency. Ni4L Antennas & Electronics, Ham Radio Antenna, Amateur Radio Antennas, Shop with confidence, Amateur Radio, Homebrew Antennas, Inverted L 160/6 meter band HF. Flipping the Inverted "L" Antenna 'Back-to-Front' = Better Performance. To do this, strap your feedline connections together and run as a single wire to the end-fed wire post on your tuner. They told me they could not possibly work in a fashion that would allow them to be a serious aerial. Like everything else, antennas come in many forms and flavors. Someone else who built one and found it works gave it the name "non-resonant twin wire". This puts less of the antenna parallel with the ground and increased the effective height. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. Ni4L Antennas & Electronics, Ham Radio Antenna, Amateur Radio Antennas, Shop with confidence, Amateur Radio, Homebrew Antennas, Inverted L 160/6 meter band HF. The antenna wire is in an L-configuration of 17+67=84 ft (25. Wire is fairly easy to conceal. It is an impedance 9:1 transformer to feed a high impedance, end fed (unbalanced) random wire which is likely to be a few hundred ohms, and transform it into something closer to a 50 ohm (unbalanced) coaxial input, hence UnUn. 0 MHz) and 40 meters (7. I remember using a 10 meter Sterba Curtain several years ago at a local DX-pedition and found the performance excellent. Connect any earth or counterpoise connection to the earth terminal using the wing nut. 5 to 30Mhz: 80/40/20/15/10m. Swallow-Tail Antenna 5 5. About Maxcon Our goal is to build quality products at prices no higher than what hobbyists would pay in building them, themselves. Output from a BOG antenna is lower, so using a receive preamp with it is necessary. Louis VARNEY published for the first time the technical documentation of its antenna in November 1966. I decided to build a 80 meter, half wave wire antenna that takes full advantage of the phone portion of the band known as 75 meters, also this antenna will not need a tuner. 2 is a frequency approximately in the middle of the band, which gives a length of 468/14. The all-band doublet horizontal wire antenna has a history almost as long as amateur radio itself. Breaking strength is 280# and, unlike the vinyl jacket found on the vast majority of antenna wire, the polyethylene jacket is 100% UV stable, very tough and slippery - almost like Teflon ®. Wire Antennas. of #16 "silky" stranded wire cut to one wavelength long on. Windom Antenna - Feed with coax cable 7 8. One feature that I added was the ability to short the two ends of the open wire feeder and run it against the limited "ground" connection which consisted of the copper pipe run for the water feed. Delta Loop Antenna. The MFJ-16010 is a variable L-network random wire antenna tuner designed to match the low output impedance of your transmitter to the high impedance of a random wire (or vice versa). Using the W7FG Open Wire Fed True Ladder Line Multi-Band Dipole Is Easy! Why use an open-wire fed doublet? Quite simply, they are efficient, broadband, easily tuned with a balanced input tuner, nearly unaffected by rain, easy to erect, stay up, and remain "trouble free" for years. Then realized his number ended with a "T". Most of the general action is somewhere between the 20 meter band and the 40 meter band regarding shortwave and ham band listening. The wire antenna is connected to a 9:1 transformer that is grounded to a 2,5 meter (8 feet) long copper tube, driven into the ground. After much trimming, it tunes the full 160m and 80m bands by selecting tap points on the coil with an alligator clip connected to the end of the radiator wire. Find External In Stock Now. MFJ 1778 G5RV 10-160 Meters Wire Antenna,10 - 80 Meters As Dipole 160 As Marconi. The Hy Power OCF80 80 meter version shows a positive SWR dip on the following bands: 6, 10, 12, 17, 20, 40 and 80 meters. 285 with less than 1. Example : For a 160 meter loop, 1005 divided by 1. The Balun on the end matches the 450 Ohm Open Wire Line into a 50 Ohm Coax Cable. Most hams don't do this when they put up end-fed wires, so their antennas are more aptly named random-wire, end fed antennas. only weighs 6 oz. and has a wind load of just 2 square feet. The 1/2l dipole radiator (driven element) is 10 m long or so. and it works great, i used a 4:1 balun and feed it at the 66 ft level. Building an amateur radio antenna for 160 meters is a challenge. So a symmetrical antenna has to be the choice (so no verticals needing radials). Resources listed under antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. The 40m CW antenna seen from the north side of the tower. The radio noise produced. If you can't solder, just find somewhere (old headphones, for instance) a junk plug, find the center wire and attach it to antenna by winding the wires together. Instructions for Putting up a Long-Wire Antenna. I just like to get as much wire up as high as possible and work all bands I can with an ATU. I have a fan dipole for 160,75,40 meters cut to length on each leg to have low S. The impedance of a long wire antenna varies as the frequency is changed, but the normally accepted values are from a few hundred to a few thousand ohms depending on length, height, ground conditions and. Aug 7, 2019- Explore centerfirenotw's board "homebrew antennas" on Pinterest. Natural radio noise tends to be stronger at lower frequencies than at higher. A Broadband Butterfly Terminated Dipole Antenna BBTD Inverted V optimized for the 1. Putting wire back is not nearly as easy as taking some wire off! Antenna analysers can also be used and these can give a better indication of the operation of an antenna. If the wire is made Chapter 7 Multiband Antennas Fig 1—A t A, a random-length wire driven directly from the pi-network output of a transmitter. All of our products are made of top quality materials, and constructed to last in harsh environments. These are the materials we use for our 5/8 wave vertical antennas: 12. It will also match almost any antenna for home station operation such as dipoles, inverted-vees, verticals, beams, random wires, and others fed by coax lines or single wire. Heard lots of stations, just couldn't work 'em. 43 meters above ground. A random wire is also a. The skywire loop is an excellent antenna - they can be a bit of work to get up in the air if you have a lot of obstacles (trees, xyl, etc. Louis VARNEY published for the first time the technical documentation of its antenna in November 1966. It will match almost any random length of wire to any transmitter from 160 thru 10 meters. This antenna just works. To determine the wire length, use the formula 468/frequency. My KX2 Owner's Manual, page 10, says "A length of about 25 feet for each wire, matched to the KX2's output using an antenna tuner (see ATU, pg. Originally these antennas were called "half wavelength Hertz Aerials" and were fed with a single wire. Can't wait to try the random wire on the next Sprint. I'm currently using a ¼ wave slopper fed against my 48 ft tower. Let me know what to do with the dipoles is the fan dipole as good as the single wire. Baluns and RF Chokes: Ham Radio Q & A Episode 3. by "Yukon John" KL7JR. Longer wire is always more efficient but is usually best kept under 300 feet as the characteristics of a Beverage antenna begin to show up beyond this length. I went in for the Tech exam and managed to pass. Antenna was a 113' (34 meter) #14 AWG solid copper enameled random wire up about 15' (5 meters). Folded-unipole antenna sites are alleged to be less affected by disturbances near the ground that cause attenuation in other monopole antenna designs, but measurements show no such advantage. I just wished that an addition of a 160 meter element with some way of widening the 80 meter bands was possible as well as adding a 6 meter element. 120″ thick-walled tubing. DX Engineering is your #1 source for wire antennas. I will run the coax out the side of the house and burry it for about 20 feet. The above graphic depicts the overall layout of the loop antenna consisting of 558 ft. As for the theory of operation, it remains a mystery. A couple of bends won't hurt. To cut the antenna wire length to resonance we use the formula: Length (in feet) = 1005 divided by frequency (in MHz). 22 Different Wire Antennas. The wire is 32 ft (9. On 160, the antenna performs like a Marconi. The only (wire) antennas left are probably (trapped) dipoles and loop antennas. The antenna wire is in an L-configuration of 17+67=84 ft (25. This antenna just works. The transmitter may have an output RF power up to 200 watts. They can come close to half wave antennas in efficiency, although efficiency decreases as they are made very long or installed closer to. The MW550P will match any antenna (eg. These antennas can be set up as a straight suspended wire or erected in inverted V format. Better than a G5RV - the ZS6BK / G0GSV multiband HF antenna - External site. It is a #18 gauge stranded copperweld with a tough polyethylene jacket. The Marconi antenna is a vertical wire with a length of 1/4 of the working wavelength, feeded through its lower end. End-fed wire antennas. (Thanks to Skip Behnke, W2OZ for this information. At its highest point in the attic, it is about 30 feet above ground (brick) level. But performance is down about 8-12db on a dipole on 80m. The privacy fence also acts as an anchor for one of the legs of the Stealthy Delta. The left side red circle is drawn around the tower that holds my Sommer Yagi antenna, and also an 80 meter invered vee. A couple of bends won't hurt. 3 swr at either end of the band 80 meters at 3. The wire antenna is connected to a 9:1 transformer that is grounded to a 2,5 meter (8 feet) long copper tube, driven into the ground. Feed square and rectangular loops at a corner. Viewer Request - My home HF antenna solution, 160-10 on a small. The MFJ-931 Artificial RF Ground covers 1. if your antenna and radio are for receive only, you could benefit from an antenna pre-selector. NOT AT ALL! I’ll leave you to form your own opinion. A 160 Meter Antenna for a Small Backyard - EngineerZone We love these galleries filled with the most. 200 watts pep. As well a 43 meter long antenna. Here in the Netherlands it’s called “VD draad”, this wire has a velocity factor of 0. Louis VARNEY published for the first time the technical documentation of its antenna in November 1966. 134 - Taylor Vee. 2 is a frequency approximately in the middle of the band, which gives a length of 468/14. So having radials is not such a great idea. The antenna was put up in an inverted V configuration onto an oak tree in my back yard. Note: Route all single and random wire antennas to prevent RF burn hazard. Not sure what it all is, but there are some very large capacitors in the box. This antenna makes a very good transmitting wire for work on all bands from 160 to 10 meters in restricted locations, where longer wires are not possible. To Remote Automatic Antenna Tuners and the 43 Foot Vertical Figure 1 — Test setup used by the author for measuring expected tuner loss with a load that simulates the impedance of a 43 foot vertical antenna on 160 meters. The following tables show the recommended lengths to use for antenna wire based on the bands you wish to cover. Even on 80 meters, where. by "Yukon John" KL7JR. Maybe it does but you'd never know it from my score. I'm currently using a ¼ wave slopper fed against my 48 ft tower. 160 Meter Wire Antennas. Amateur Radio has been a supreme way of communications for many ways of getting messages from one place to another for decades!. MFJ 1778 G5RV 10-160 Meters Wire Antenna,10 - 80 Meters As Dipole 160 As Marconi. Example : For a 160 meter loop, 1005 divided by 1. To my surprise, it also works well on 160. The main problem is the antenna ability to pick up passing waves near conductors. note: when using balanced feed antenna systems. The transmitter may have an output RF power up to 200 Watts. 1m (3ft) away from the trunk. You can also L shape it or zig zag it or slope it if you are limited on room. Swr on my meter is less then significant even with no tuner. I remember using a 10 meter Sterba Curtain several years ago at a local DX-pedition and found the performance excellent. The antenna has a full 300kHz bandwidth on 80m between 3:1 SWR points. A height of about 1 inch (2. Amateur Radio has been a supreme way of communications for many ways of getting messages from one place to another for decades!. CONS: That much wire can be heavy, causing it to droop. The angle of the slope is usually between 45°–60° and the lower end of the wire is at least 1 ⁄ 6 wavelength above the electrical ground. For operation on 160, an additional two turns are place in series with the 80 meter coil. Wire Antenna Design Lengths. Can't wait to try the random wire on the next Sprint. The tuning of this antenna was very straightforward; I simply tuned the main element for the center of the 40 meter band and then adjusted the 20 meter stub for the center of the 20 meter band.