Inverted L Antenna For 160 And 80

Four versions of this antenna are presented: 1. This would become my primary 40 meter antenna, and, I could take down my phased delta loops. This antenna proves no exception to that rule. The grounded loop antenna (non-resonant, unbalanced), works well on the HF Bands. 85 - Backpack J-Pole Antenna for 10m, 6m, 2m. Don Toman, K2KQ toman@ibm. On 3830 for this contest I said about the low bands: 'an inverted L with some radials fed with a SGC-230 coupler for 80/160m. I combined this with an external thermocouple ammeter to read the RF cur- rent into the antenna (see Figure 3). Double-L Antenna For 80/160. I am aiming at two groups of amateurs. Improving 160 and 80 meter antenna performance - Duration: How to build a cheap Inverted 'L' antenna,. 160m Inductance-Loaded Shortened Dipole. Short antennas are typically "narrow-bandwidth". Focusing on tons of barbs 3000 topside tank and related products on sale. PDF file, 180 KB (ANTENTOP-02-2010, pp: 48- 51) Download PDF File! HTML Version. Mar 2012 QST Article by Scott – K4VWK on Resonant 80/160, elevated radial Coax Inverted “L” got my attention. Vertical Inverted L for the 160, 80 and 40- meter Bands: by Nikolay Kudryavchenko, UR0GT. The new plan is to install an inverted-L antenna. 2011 ARRL 160 Meter Contest. In an effort to get back on the bands I needed an antenna that would blend in with our new neighborhood. PDF file, 180 KB (ANTENTOP-02-2010, pp: 48- 51) Download PDF File! HTML Version. They are a single wire fed antenna worked against a good ground system. electrically remove one leg, the antenna then becomes and inverted L electrically and performance wise. 79 - Wire Ground Plane Antenna. I built a monoband version, though others have built this antenna for multiple bands. 40M/80M Trap Dipole -- From QRZ ; 80-40 meters vertical +160 meters by EI7BA ; A Hairpin Match for the 5-element Tonna; A Long-wire Aerial for Six Metres; A Practical Low Band Antenna; All-Band Center-Fed Inverted-L by W4RLD ; Antenna combination loop/dipole, by KB9MZ; Antenna design article collection KB4YLY. I did the only thing left to do - made a short top loaded vertical. Shunt Feed Tower I'm using till 1999 to make place to an one el. My minimum is roughly 1. Find great deals on eBay for inverted l antenna. 92MHz Frequency does not cause either of the two traps to become activated & the antenna behaves as a long wire. Something you might consider is a single band version of the Double L antenna. On the receive side, the standard 160 meter antenna is a Beverage of some form. 00 Mercruiser 140 Freshwater 839-3814 4 Mercruiser Bare Engine Block 140 Gm 2770087, Hp Cyl, Cyl, Engine Hp Mercruiser 4 140 2770087, 839-3814 Freshwater Bare Block Gm. On the transmit side, an inverted L or simlar antennas are pretty standard. , Edith Lennon] on Amazon. Inverted-L, T or umbrella antenna is a good alternative. for 75/80 and 160 Meters. The idea was to use the opposing harmonic. The Carolina Windom 80 is parallel and approximately 8 feet away from the inverted L. Akhirnya saya beranikan untuk membuat antenna vertikal yang kompromised di 80m. 1 end fed inverted “l” antenna for 160 – 80 – 40 metres Note: The Red & Blue colours are used simply to emphasise the vertical & horizontal components of the antenna current. of the inverted L antenna, has also recently been designed for operation at 900 MHz (cellular systems) and (personal 1800 MHz communications systems) [8,9]. think you would find that an 80/40 L with the vertical run spaced maybe 30 feet away from the tower would be a better antenna than the dipole/T combination. Compact Antennas Are Possible on Top Band!. This classic antenna consists of a 1/4 wave(130 feet) length radiator and is connected to radials laid out on the ground or even buried under the ground. In the fall of 2007, I was able to install my first amateur radio tower. Inverted Ls for 160 and 80 meters Pros and Cons of the Dual Band Inverted L Antenna. outperforms a single 65 foot vertical installed over all but the most conductive soils such as a salt marsh. I'd like to ask the antenna newsgroup a question about inverted L's. In Search of a Better Antenna for 160 The fi rst antenna I tried was an inverted L. 85 - Backpack J-Pole Antenna for 10m, 6m, 2m. MMANA File. As an example, the inverted V dipole performance very well at low frequencies and will give good results on the 3. For example, using a 4’ PVC spreader where the bottom and top PVC rails are four feet apart, then attach the meandering line wire element across the 4 foot section. Similarly for a ¼ wavelength 160 meter Inverted-L antenna approximately 60 feet high and 68 feet horizontal, the feed point impedance at resonance will be approximately: Zant = 16 + Rg Again, Rg is the ground loss, but since the antenna is a resonant 1/4 wavelength there is no reactance at the resonant frequency. For 160 and 80 meters is a different storyyou have to make quite a few compromises with a small lot, but it can be done. Description. New 82mm Shaft Anode - 3-14'' From Blue Bottle Marine. This resource is listed under Antennas/160M, at Inverted L antenna for 160 and 80 meters resource page via dxzone. Early in 2006 ON4AFU offered me a 80/160 trap with RG-58. P´erez Electronics and Communications Department Universitat Ramon Llull Barcelona, Spain Abstract—An objective of the present study is to make a physical. The DOUBLE BAZOOKA antenna design was first conceived as a radar antenna in the early 1940's for use by the U. The Inverted L My 160 meter antenna is an Inverted L. An inverted L is a bent quarter-wave Marconi vertical fed against a system of surface, buried, or elevated radials. Put that 4:1 balun, a couple of insulators and some extra wire to good use! If your major antenna problem is deciding whether your new rotary beam will be a yagi or a quad, this article is not for you. I found this article in the compendium ARRL's Wire Antenna Classics, pp. Random Length Radiator Wire Antenna. The bandwidth for any useful value of capacitance is about 40kc. 87 - Capacity Tuned Folded Loop Antenna for 20m. Both antennas have ceramic egg insulators which connect the ends to Dacron rope. T ANT is calculated and plotted as a function of frequency. During the PACC 2013 I used this antenna for 160 meters. The "L' perhaps looks more like a vee with one short leg. the vertical portion is 70 feet lenght, completed with 16 radials layed on the ground, match was obtained with an home made Antenna Tuner at the base of the antenna one feet about the ground, this Antenna replaced my previous 160m. "Invisible" DX Antenna for the Low Bands By Heinz-Josef Pick, DK5WL • Summary This paper describes a multi-band DX antenna for the 160m-40m amateur radio bands with low visibility but great performance for long distance communication. I figured it was about time to get a serious antenna for the 80/160 meter bands, so I am planning a to install a 160 meter and 80 meter inverted L supported of my 58 foot Rohn 25 tower. 50Kit: 884: W5GI "MYSTERY" ANTENNA kit - The now famous "Mystery" antenna introduced in CQ Amateur Radio in July 2003. 160m inverted L 2. Short antennas are typically "narrow-bandwidth". The antenna produces a number of lobes on this band and is no longer omni-directional. It's hard to site an antenna for the forest full of trees. The antenna had been lying dormant in my shack as I was using the original 80/40 meter W3DZZ and so had no use for it. Total length is about 135 ft. I think I worked my first US on Top Band with that. So, I have erected an Inverted-L antenna for 160m just on the edge of the forest, about 80 meters away from the house. This led to my first 80 meter inverted vee web page. > 160 is a pain in the butt, you probably would be better off using a T vs. Not ideal for the longer wavelength bands I know but I am working on it. One of the antennas that has been around almost that long is the inverted-L. Nonetheless, thanks for the Q, John!) Later, while reading an old antenna book I realized that my Inverted-L, being a quarter wave and worked against an RF ground was known as a Marconi Antenna. For a compromised antenna system, it performed as well as my 80 meter inverted vee. Has anyone used one of these antennas? I use a Inverted L right now and it is playing very well but the noise is S9 to 5 Over. END FED INVERTED "L" ANTENNA FOR 160 - 80 - 40 METRES 1. 86 - Fan-Dipole Antenna for 80m to 6m. My first antenna experiment in ZL was simply to add additional wires in parallel to the existing 40m quarter wave vertical, using the same coax feed and ground plane. The end result is an end feed broadband. This means the center of the dipole is mounted on a mast or tower several feet up, and each side of the antenna from the center are angled downward on a 45 degree angle (Give or take a few degrees). It worked okay on local and close-in DX, but I wasn’t working the DX the others were talking about. 160m delta loop. 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. Electromagne2c' Wave'Polariza2on' • Electric'and'magne2c'waves'are'at' right'angles'to'each'other' • Magne2c'wave'dissipates'within'a' few'wavelengths'of'antenna. What others are saying 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. November 2003 i take off to avoid interaction, the 160 m. I am fortunate to live on a lake and have 2 acres of trees -- many tall hemlocks -- on which to place wire antennas. Full text of "Straightening Out the Inverted-L" See other formats Straightening Out the Inverted-L L. Good luck & 73. I cut the antenna for 140ft and adjusted length and mid point to both center the usable SWR valley and too adjust the depth of the SWR valley. I did the only thing left to do - made a short top loaded vertical. net [this is the web version of the article that appeared in the November 2006 issue of CQ] Operating on 160 meters has always been a challenge. Put that 4:1 balun, a couple of insulators and some extra wire to good use! If your major antenna problem is deciding whether your new rotary beam will be a yagi or a quad, this article is not for you. 160m inverted L current 160m inverted L frequency plot Matched with a 2:1 balun, to give a 100 ohm feedpoint impedance, this antenna shows a great SWR on the 160 meter band and a vaguely reasonable SWR on the 60 meter band. I'd like to ask the antenna newsgroup a question about inverted L's. Finally, getting a match on 160, and good reports, but despite a match all the way through 6m, it would only match on a vary narrow portion of 160 and 80 bands. Same FCP antenna at 8 feet, with L horizontal at right angles to FCP: Single-fold counterpoise with Four 80-ft Counterpoise Elements. I've had it for about 4 years and haven't had. There are alternatives to a full size half wave dipole. 82 – 300ohm-Ribbon Dual Band Dipole. 0 FI Vs UM Motorcycles Renegade Sport S to know which is better. 5mm2 (inverted L) - 1 PVC pipe (cutted in 2 parts for insulators) - 1 piece of PVC plate. An inverted L DX antenna for the low bands 80/160. The most common half-wave antenna is the center-fed dipole, whose. Radiating elements of both antennas are made of 12 AWG stranded wire with THHN insulation. 8 MHz to 144 MHz. This antenna configuration shown above will work nicely if you have a wide range external tuner or a link tuner. Going about 10 meters up and 10 meters horizontal. One of the reasons 160 meters remains relatively uncrowded, however, is that effective antennas for this band are very large. Detailed bikes comparison on TVS Apache RTR 160 Vs Yamaha FZ S V3. I wanted to discover the lower bands like 80 and 160m so I built this inverted-L. Well, fear not, as there is a compact solution to your MF antler woes, and it is an Inverted "L". Here's a simple antenna which will get you on the air on top band and 80m (40m as well at a pinch) in a small garden. If you choose to use a remote tuner for such an inverted-L system, add another layer of water-proofing as an additional guard. 160 Meter Inverted-L Bazooka Antenna- A DOUBLE BAZOOKA antenna is an extremely broad-banded Half Wave Antenna that can operate efficiently across an entire Ham band with little change to the SWR. Horizontal Antennas above Real Ground ; Horizontal Half-wave Dipole above a Counterpoise ; Improve Antenna 80 and 160 meter, by K1KI; Inverted L Antennas By Arnie Coro (CO2KK) K3KY Low Band Antennas; K6STI Receiving Loop; Loop Antenna, Magnetic, Portable-- From G4FON; Love My Loop! by W4KSY. P´erez Electronics and Communications Department Universitat Ramon Llull Barcelona, Spain Abstract—An objective of the present study is to make a physical. The unit on the left below is the medium power BMU (Base Matching Unit) intended for 42 foot to 48 foot vertical, sloper, or Inverted-L antennas. to about 900 miles on 80 m. New 82mm Shaft Anode - 3-14'' From Blue Bottle Marine. Modeling this 160 meter inverted-L in EZNEC shows surprisingly useful patterns and gain on most HF bands above 160. I designed and constructed the antenna on November 11, 2007. An 80/160 Meter "Inverted L" for Arctic Use. In early August of 2005, the SWR on the inverted L had suddenly gotten suspiciously high. Design Configuration Inverted-L with a 6-wire cage for the vertical radiator. The Carolina Windom 80 is parallel and approximately 8 feet away from the inverted L. Random Length Radiator Wire Antenna. I think I worked my first US on Top Band with that. Find great deals on eBay for 160 meter inverted l antenna. The sketches below provide the configuration details. 40 meter 1/4 wave full sized vertical 20 meter 1/4 wave full sized vertical 15 meter fully loads on 40 10 loads on 80 It works well for me. Cebik, W4RNL 80 Meter Inverted Vee From GERRY VE3GK 80/40 Super Loop Antenna 80 Meter Antenna-- Reduced Size For Small Lots: 40 Meter Antennas: 40M Shortened Loop-- By Ben Smith, W4KSY Via Antennex WB0NNI 40 Meter Linear Loaded Vertical K5OE Antennas--  HF Antennas 40/80/160 55 ft. I would full size 40 and 80 meter inverted 'V's but 160 band takes a bit more room. The bandwidth for any useful value of capacitance is about 40kc. 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. Has anyone used one of these antennas? I use a Inverted L right now and it is playing very well but the noise is S9 to 5 Over. Just take the 160 stuff off of this, and it should work fine. 80 Meter Antennas Antenna Projects From The YCCC-- Double-L For 80/160, Two Wire Beverage, A Poor Man's 160 Meter 4-Square, Using a 4 square Vertical Phased Array to improve your 80 and 160 meter signal, -- From The Yankee Clipper Contest Club Verkürzte Antennen-- Short Dipoles and Verticals for 160m & 80m -- From DJ9RB 160/80/40 Meters - 55. Triband Receiving Loop for 160/80/40m Noise is the constant companion of the stealth antenna warrior. Ternyata noise yang ditimbulkan tidak sebesar yang saya bayangkan. Put that 4:1 balun, a couple of insulators and some extra wire to good use! If your major antenna problem is deciding whether your new rotary beam will be a yagi or a quad, this article is not for you. That way i can tune it on 160/80/40/20, for all bands there is a OCF antenna as well, and higher as 20 i use another vertical givng better results there as the inverted L. g0csk ea5avl g8ode oct 2008 iss 1. The vertical section should be as high as possible, with the remainder of the antenna run horizontally to a support, such as a tree or a mast. The L is fed with the MFJ 998 autotuner at the bottom feeding the L directly. At the moment I am running a 2 element boomless quad for 10 meters, a crude home made vertical for 20 meters and a half size G5RV mounted at 15 feet above the ground. Above 160-meters, the radial system acts like a good RF ground between the operating position and the antenna base, since the antenna is 1/2-wavelength or longer on all bands above 160 meters. 22 Different Wire Antennas. The Carolina Windom 80 is parallel and approximately 8 feet away from the inverted L. It will have a 55 foot vertical element, then run horizontal to the ground for another 90 feet +/-. 55MHz Plots 7. Use Your Tower as a Dual -Band DX Antenna. Of course you must keep the end of the antenna high enough above ground, such that humans and animals will not be harmed by the high voltage on the end of the wire. Short antennas are typically "narrow-bandwidth". To make radials self-resonant in single folded configurations, each radial has to be 80-feet long. A 160 meter inverted L can be used quite successfully on 80 and 40. The idea was to use the opposing harmonic. think you would find that an 80/40 L with the vertical run spaced maybe 30 feet away from the tower would be a better antenna than the dipole/T combination. It has passed through phases of love and hate, honor and denigration, use and disuse. My Beverage and vertical receiving antennas are out in the pastures, spread over a 1500- by 3000-foot area. For example:. > 160 is a pain in the butt, you probably would be better off using a T vs. com, buy now with and get a great discount, choose our fast delivery option and you will receive it in 7 days. They compare very favourably indeed, with the vertical dipole usually a tad better than any of my 1/4 w/l verticals both on TX and RX. In late 2004, I had replaced the two parallel mica capacitors with a single doorknob cap, and it had been causing the SWR to drift with temperature. PDF file, 180 KB (ANTENTOP-02-2010, pp: 48- 51) Download PDF File! HTML Version. The idea was to test each antenna in as equivalent band conditions as possible. On 80m, the first L was correct but very bad on 160m, with this upgrade I can now make more QSO on the top band. Buckmaster OCF Dipole Antennas are made from the best quality materials with a completely potted waterproof balun and no external connectors. Berikut artikel aslinya : 160-80-40m End Fed Antenna G0CSK. So a slightly long inverted L was the winner since it 1) fit into the yard where the trees line up, and 2) lends itself to capacitive matching if made slightly long. Total length is about 135 ft. The capacitor between the antenna and radial junction is replaced with a tapped coil. 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. A further factor which influences antenna resonant length is the diameter of the wire used for that antenna. The trap for follows the same format as the 7 MHz trap previously described in PW. L's 165' long and could match 160, 80 and 40m with them pretty easily using a single-ended tuner. Buckmaster OCF Dipole Antennas are made from the best quality materials with a completely potted waterproof balun and no external connectors. In fact, about 12 acres of them. 1 end fed inverted “l” antenna for 160 – 80 – 40 metres Note: The Red & Blue colours are used simply to emphasise the vertical & horizontal components of the antenna current. Use a tunable L-Network or any antenna tuner capable of matching high impedance loads, and it's a good multiband system. This resource is listed under Antennas/160M, at Inverted L antenna for 160 and 80 meters resource page via dxzone. Going about 10 meters up and 10 meters horizontal. My best DX on 80 with the inverted L was the East coast from Oregon (pretty easy on winter nights) and Hawaii on a 160 meter version. So if I assume the popular dipole formula 468/F(Mhz) is correct then on 80 meters and applied also to a quarterwave then I would see resonance at F(Mhz) = (468/66)/2 = 3545Mhz. outperforms a single 65 foot vertical installed over all but the most conductive soils such as a salt marsh. In the inverted "L" configuration, try to get the vertical portion up at least 15 ft if possible. In the fall of 2007, I was able to install my first amateur radio tower. Horizontal Antennas above Real Ground ; Horizontal Half-wave Dipole above a Counterpoise ; Improve Antenna 80 and 160 meter, by K1KI; Inverted L Antennas By Arnie Coro (CO2KK) K3KY Low Band Antennas; K6STI Receiving Loop; Loop Antenna, Magnetic, Portable-- From G4FON; Love My Loop! by W4KSY. The vertical section should be as high as possible, with the remainder of the antenna run horizontally to a support, such as a tree or a mast. • 80 METERS • 60 METERS • 40 METERS • 30 METERS • 20 METERS • 17 METERS 160 Meter Inverted-L Bazooka Antenna (0) Sale. There are several reasons why I chose the double L antenna: Size, the antenna is relatively compact with the height being equal to the highest tree around and the horizontal length about 100ft. Typical antenna lengths for the amateur bands from 160 - 10m, both when using insulators or nylon rope, are shown in Table 3. The "L' perhaps looks more like a vee with one short leg. * Inverted L by W1FB * M0MCX inverted L for 160 80 40m * W8NX space-efficient dipole (pdf) * VK3ZZC 160m vertical * 22 different wire antennas for 160m. A number of hams have earned their 160-meter DXCC while using simple inverted-L antennas. Planning a dual band inverted L for 160/80 meters Modeling a quarter wave inverted L antenna for the low bands. It was time for me to get on 160 meters. That wire will be attached to a remotely tuned L-Network which is coax fed. But I wanted to cover both 3575-3580 and 3600-3610 kHz. Finally, getting a match on 160, and good reports, but despite a match all the way through 6m, it would only match on a vary narrow portion of 160 and 80 bands. After a leisurely walk around the estate with tape measure in hand, I managed to locate several nicely spaced trees that looked as though they would serve to hold up a 160 meter dipole. Unlike many END FED antennas on the market, this one does not require the Antenna Tuner to operate. com Communications via radio is over a century old. It will have a 55 foot vertical element, then run horizontal to the ground for another 90 feet +/-. A popular misconception about vertical antennas for the low bands is that they must have elaborate ground systems. 81 – Inverted-L for 160m. In order to select the better. For an efficient antenna, 3 or 4 elevated radials are required for each band. Contents for AntenTop 02- 2010. Antenna wire of PVC coated steel wire. Puente † Technology and Intellectual Property Rights Department Fractus Barcelona, Spain A. Moreover both the 40m & 80m antennas appear to contribute fairly equally to the radiation pattern. My minimum is roughly 1. 5 m sections of the aluminum tubing, and the radiator is easily removed from the coil core. It is not a G5RV because thats a special case with a given length of radiator and feeder. Latin America Probably doesn't need listening antenna. Because the amateur bands are related harmonically it is possible to produce an inverted L antenna that is resonant or almost resonant on a number of bands. The Inverted "L" is a 1/4-wave Marconi, fed against ground or a counterpoise such as radials. Low Band DX Antennas •On 80 and 160M, it gets much tougher, but the Inverted L is a very good antenna and can even be used on 160 -30M with a tuner •Its easy to use a 43' vertical and use a couple wires to make it resonate on 80M •160M is the biggest challenge -on a small lot, its hardly ever "easy". Below are the details of my antenna which is a new twist on a well established antenna. Early in 2006 ON4AFU offered me a 80/160 trap with RG-58. An 'Inverted-L' antenna for 160 is a workable solution for NVIS coverage at the 100-watt power level, so long as the vertical portion of the wire is not more than 50 feet in height (assuming the total wire length is >= 1/4 wavelength). For many years, I used a simple wire inverted L and a tuner to get on Top Band, just like many others before me. Compact Antennas Are Possible on Top Band!. Find great deals on eBay for 160 meter inverted l antenna. 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. ANTÉNY PRO 160 m. It was time for me to get on 160 meters. The construction of the antenna is shown above and is a five turn loop of one cable from 5 ampere mains cable. Vertical Inverted L for the 160, 80 and 40- meter bands. the lowest bands, including 160, 80, and 40 on the reference antenna, whereas it would be nearly impossible to operate on 160, and only marginally possible to operate on 80/75 meters within a very narrow bandwidth on the other types of antenna in the test group, I decided to erect the reference type antenna. * Inverted L by W1FB * M0MCX inverted L for 160 80 40m * W8NX space-efficient dipole (pdf) * VK3ZZC 160m vertical * 22 different wire antennas for 160m. I'd like to ask the antenna newsgroup a question about inverted L's. That wire will be attached to a remotely tuned L-Network which is coax fed. After about 1000 miles the Inverted V signal declines rapidly being barely received by 1500 miles. I figured it was about time to get a serious antenna for the 80/160 meter bands, so I am planning a to install a 160 meter and 80 meter inverted L supported of my 58 foot Rohn 25 tower. This resource is listed under Antennas/160M, at Inverted L antenna for 160 and 80 meters resource page via dxzone. 1 end fed inverted "l" antenna for 160 - 80 - 40 metres Note: The Red & Blue colours are used simply to emphasise the vertical & horizontal components of the antenna current. My inverted L 77 feet high and 77 feet top section from 77 feet down to 45 feet and 3000 feet copperwires as radials is a serious DX antenna on 160/80/40/20 with the low angle of radiation and the MFJ 998 legal limit autotuner at the feedpoint. The reason for its non-popularity on the higher bands is that there is no handy-dandy premade MFJ box to tune it, and you can't feed it directly with coax. I have to tune the antenna every time when I change bands. Just take the 160 stuff off of this, and it should work fine. The purpose of this. I have used my 160 inverted L on 40 to good affect. A further factor which influences antenna resonant length is the diameter of the wire used for that antenna. The availability of the 30, 17 and 12-meter bands has ex- panded our need for multiband antenna coverage. ON THE RADIATION PATTERN OF THE L-SHAPED WIRE ANTENNA A. The vertical portion of the antenna is about 30. Inverted L for 160 meters. The DOUBLE BAZOOKA SHORTY is recommended to be mounted in an inverted "V" configuration for optimum results. 40 meter 1/4 wave full sized vertical 20 meter 1/4 wave full sized vertical 15 meter fully loads on 40 10 loads on 80 It works well for me. Did I mention that we have trees here? Lots and lots of trees. Spectra repair, filter repair, motorola programming, radio mods. Inverted-L, T or umbrella antenna is a good alternative. The principle is the same. Same FCP antenna at 8 feet, with L horizontal at right angles to FCP: Single-fold counterpoise with Four 80-ft Counterpoise Elements. 79 - Wire Ground Plane Antenna. Fig 1 - Example of a 1/4-λ inverted-L antenna. Many hams don’t have room to install one. I use the inverted Vee as a multi band antenna for all bands from 1. 80 meter inverted L no compromise with full size. Inverted L Antenna For 160 And 80.