Hidden Antenna Ideas -- Links Via AC6TS Hidden Antenna Ideas Loops, Operation Away From Home, Attic, From NØHC Stealth Amateur Radio - Book From The ARRL -- (ISBN: -87259-757-1) #7571 Stealth 40M Antenna -From K7ZB. Tune into the full power of free HDTV with the GE UltraPro Outdoor/Attic Stealth HD Amplified Antenna, Black. Numerous copies have been made without success -- including most recent ones. Subject: [loopantennas] Horizontal Delta Loop. KL7JR'S Confined Space Stealthy Loop 6-20M. really pleased with the performance from such a small antenna, I suspect th. It was cut for 20m. If installing two antenna's are better than one, you may choose to install a. 0 Mag-Loop Antenna, It's a little bit warmer today than it was for our last- Well, 35 degrees warmer than the last video. The PBS channel (8. THE STEALTH LOOP is a small HF antenna with continuous coverage from 40 to 10 m. In attic, spirals, wire. loop antenna by i3vhf loop antenna by i3vhf, loop baby, loop midi, the stealth loop. It does not have to be perfect, just try something and see how it works. No installation is needed: you can put THE STEALTH LOOP on the ground, on a balcony, on a table, on the roof of your stationary car, etc. The diode D1 is needed for inverse polarity protection. Intended primarily for. This can be accomplished by any of the following: • Making it difficult to see. It comes ready to use with mast clamp and LCD ctrl unit. Fractal Antennas with Chip Cohen (W1YW) Fractal Antennas with Chip Cohen W1YW. Some of the key features of the CHA RXL are: Stealthy - Navy gray loop fades into the background sky. Fractal Antennae. Select the loop antenna based on the Ameritron's BCD aux output. meets stringent quality and safety standards. 75 Ohm FM Antenna and AM Loop Antenna with 2 Pins Bare Wire Connector for Pioneer Onkyo Yamaha Marantz Indoor HD Radio Bluetooth Stereo AV Audio Video Receiver Power Amplifier. 8 MHz C o n t i n u o u s C o v e r a g e A n t e n n a. 68 feet ) is designed to attach to a wall. Just as the name implies the "loop antenna " is an antenna made in some configuration of a loop. MFJ-1786 Loop Antenna - My Stealth Antenna Installations | K3RRR Kilo Three Triple R Amateur Radio Station. The antenna has only ever been used at home location and is in FIRST CLASS condition. 5 MHz), or the STEALTH loop (6. ANTENTOP- 01- 2017 # 021 Stealth Antennas for Amateur Radio 5. Delta Loop Antenna. This is because it includes a massively long cable, a magnet, and an SMA adapter all at a very modest. Indoor antennas Indoor Stealth Loop 20‐4 Indoor antennas Slinky Antenna 20‐5 Indoor antennas Attic Screwdriver Antenna 20‐7 Log‐periodic Log‐periodic for 144, 222, and 432 MHz 15‐51 Log‐periodic TV Antenna Conversion 15‐51 Loops QRP Transmitting Loop 20‐12 Microwave antennas Horn Antenna for 10 GHz 15‐63. Combined with its small size, the loop-on-ground design might make an effective low-noise receive antenna for people who live with a combination of a small lot and land use. I am not sure of the difference however. GF-LINK New AM FM Hidden Windshield Antenna Car Radio Truck. The calculated voltage across the coil was around 25,000V. Magnetic loop antennas mitigate both of these to provide increased performance. 40m-10m DELTA LOOP ANTENNA - GU3WHN At 7 MHz the full wave loop is resonant – and with the 4:1 balun produces a SWR of 1:1. 2M HO LOOP, 144-144. A small loop antenna appears as a very large resonant circuit. ARRL Antenna Book - 24th Edition Paperback More information >> Please Select Pricing. The diode D1 is needed for inverse polarity protection. AEA, (mfr of my loop), is no longer in the antenna business. 43 FOOT 10-160 METER MULTIBAND FOLDOVER VERTICAL ANTENNA WITH UNUN. 160m Inverted-L. Maximum Stealth. It seems one of the best kept secrets in the amateur radio community is how well a small diminutive magnetic loop antenna can really perform in practice compared with large traditional HF antennas. An inexpensive 3-Band Magnetic Loop Antenna. It, and most of the local transmitters are only 7 miles away but on top of a mountain, close to 3,000 feet higher than our house. Submarine antennas, as compared to surface ship antennas, are unique in design, shape, materials, and performance due to a submarine's space and weight limitations, extreme environmental conditions, and stealth considerations. From using house rain gutters and drain pipes, or a magnetic loop in the loft, through to a tuned loop around the window frame Stealth Antennas provides a wide range of ingenious antenna solutions. cdr Author: Sergio Mazzoni. Brought to you by GF-LINK, this product is a high-quality hidden antenna with wonderful features on offer. If this works out I will share the design with you. This article is a summary of how each system performed during the contest, and how each could serve a military operator best. At this point the antenna will then be driven to its lowest tunable frequency of 6,600kHz, display the resultant SWR, and stop. 4 Indoor and Stealth antennas Window Ground‐Plane for 2 Meters 20. On 30 it still works pretty well and you'll even make some decent regional contacts on 40 meters. Ugh! Phase three was putting up a second loop; a dedicated 80m antenna. One goal was to build an antenna which is not instantly recognizable as an antenna. 0 Automatic Tuning Unit. Type: Mobile HF NVIS magnetic loop antenna. 2(b): But when erected as an inverted-V you gain a couple of S-points (10 - 12dB) in the. Loop antennas do work. for 6-80 Meters. Produzione e vendita antenna loop magnetiche MIDI, BABY, STEALTH da 3,5 a 14,5MHz - 6,6 a 29,8MHz. Antenne HF loop magnetiche, Loop Antenna i3vhf. I don't want to spend lots of money for a HF antenna, and even if I did my apartment complex wouldn't allow it! This is my story, and while I'm no expert I hope that sharing my experience will help encourage others to try crazy things in the spirit of invention. Hidden, Stealth, and Secret Antennas from AC6TS. It is intended to be set on a metal table or bench, will work well when placed on top of the metal roof of your parked vehicle and will also work when placed directly on the ground. 4 GHz loop antenna will only need to be about 12 centimeters in. You are now part of the magnetic loop HF antenna craze that is sweeping the amateur radio community. On 40m it is a 2 wave length open loop or Bi-Square. Flagpole, roof vent, weather vane, satellite dish 3. Mini loop antennas can be. Use thin wire. Fractal Antennae. 10M Bent Attic Antenna - A Yagi No Less Hidden Attic Antenna -- From NU3E -- An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 40, and 80 Low Frequency Attic Loop antenna - from Bill Farmer W3CSW Attic Loop antennas - from William Hansgen. The Stealth will work with any HF radio. Purple Martin Birdhouse Antenna: Not so uncommon is the ground mounted vertical wire antenna design installed inside PVC pipe. 0) or (CHA F-LOOP 2. 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". Mini loop antennas can be. These products include quality products manufactured by Stealth Telecom and other well known suppliers of radio communications equipment. Antenna that are optimized for installations in attics or similar locations at low heights above ground. For this antenna space is not a problem: on the balcony, on the roof. THE STEALTH LOOP is a small HF antenna with continuous coverage from 40 to 10 m. php?threads/buried-radials-and-pets. It seems the more I use them the more amazed I am! Hint. In view of this, Liu et al. VK5KLT, "An overview of the underestimated magnetic loop HF antenna,"]. and Amy Herndon; and coops. This design also allows me to stealth) and bungie cords. One end goes straight into the rig, often with no feedline, and the other end in the air attached to something as high as you can find. The Loop Antenna. meets stringent quality and safety standards. It's broadband design is ideal for Software Defined Radios (SDRs), panadapters, hams wanting a small low-noise receive-only antenna. Stealth Ham Antenna Beating the HOA. Various QTHs from a mountain top overlooking the Great Smoky Mountains National Park, to our beachfront condo 100 yards from the Gulf of Mexico to our current home in Potomac, Maryland. Has anybody mounted the Stealth Loop on a roof? If so, did you place it on top of reflective material as they recommend? If so, what did you use? I ordered the antenna and atu cable and am planning out the mounting situation. Coated Bulk Antenna Wire. I am trying to figure out how to get another one and get it “portable” for field day (I need to figure out the financial […]. No installation is needed: you can put THE STEALTH LOOP on the ground, on a balcony, on the roof of your stationary car, etc. MFJ-1786 Loop Antenna – My Stealth Antenna Installations. The antenna is designed so that it normally operates when the hinged loop is raised. The Stealth 9310 antenna is the budget version of the 9300-series Automatic Tuning Whip HF Antenna family designed for military and professional applications. Loop antennas are still great, though, because they're a very easy gain antenna to construct. Fully Automatic Operation – The motorized folding loop can change its position within seconds from inside the moving vehicle at any time. Windows come in all sizes so that loop may certainly 'fit' around yours. • Stealth antennas usually have lower gain than full-size Yagis. So EASY TO HIDE and WORK SO WELL. The two above pictures show the radiation pattern of the Delta Loop fed in the bottom corner of the antenna. Designed as smarter, stronger, and more elegant multi-band antennas covering every frequency from. In addition, the ferrite rod is cushioned on a bed of silicon rubber inside the ABS cabinet for added durability. Designs include magnetic loops, tuned wire loops, small verticals, zig-zag loaded dipoles and even reviews of a number of commercially-made stealth. Essentially, this is simply a 30″ full-wave loop, so the full wavelength is 30″, which is for about 394 MHz. In his article, I will try to bust some of the myths associated with Inverted V and dipoles. 5 MHz), or the STEALTH loop (6. Discussion in 'Antennas, Feedlines, Towers & Rotors' started by N3VEZ, Sep 6, 2021 at 1:20 AM. Can be used as a end fed shortwave antenna to provide continuous coverage from 500 kHz to 60 MHz. My new (only) loop is 62 metres D10 comms wire fed through the loft but with 16mm holes drills right at the eves to allow 15mm plastic water pipe to thread through them. A dipole delivers a little over 8 db gain over an isotropic antenna or 8 dBi. From using house rain gutters and drain pipes, or a magnetic loop in the loft, through to a tuned loop around the window frame Stealth Antennas provides a wide range of ingenious antenna solutions. Touch device users, explore by touch or with swipe gestures. Stealth Antenna setup. The bag is large enough to accommodate this antenna, your QRP rig (most of them), and some other supplies/Take your shack with you. Note the low angle of radiation. multi-band antenna. The CHA RXL covers all frequencies between 137. 0) or (CHA F-LOOP 2. Ugh! Phase three was putting up a second loop; a dedicated 80m antenna. MFJ-1786 Loop Antenna - My Stealth Antenna Installations. Immune to water, dust and vibration. Most magnetic loops have the capacitor at the top of the main loop and the gamma match or matching loop at the bottom, this arrangement avoids running the feed-line through the center of the antenna. In attic, spirals, wire. A loop antenna covered by the lawn is the very definition of a stealth antenna, which should make it very attractive for people living with antenna restrictions. http://chameleonantenna. At the heart of every radio and MLA (Magnetic Loop Antenna) is the resonant circuit. From large‐scale, commercial‐grade enterprise systems to high‐end amateur radio offerings, SteppIR is the leading global HF‐communication solution provider. A variety of cw keys and paddles. For stealth applications, it is required to reduce in-band as well as out-of-band RCS of antenna system. Vertical Square loop Stealth Antennas •K2AMV dual-bander K8YC Spiderbeam. Look at the "jungle" on right side of picture above the rails. If your roof-loop or whatever picks up a lot of noise, you could continue to use it as a transmit antenna and buy or build a rx-only magloop and TR switch. By John Portune W6NBC. Windows come in all sizes so that loop may certainly 'fit' around yours. Delta Loop Antenna Radiation Patterns. The calculated voltage across the coil was around 25,000V. Experiment 1 - Vertical Attached to Ground Rod with No Radials. Durable Construction, Can be Used in Extreme Weather Conditions. The Stealth loop from Ciro Mazzoni Radiocomunicazioni, a quick look and a listen. MFJ loop tuner and several pre-cut and formed loops. Stealth Antennas A Stealth Antenna is one which is designed to go unnoticed. MLA 30 plus Shortwave Loop Antenna is an affordable active loop antenna that allows people without the luxury of a large backyard to use an external antenna to boost the performance of the their Shortwave Radio radio and increase the number of radio stations and broadcasts that can be received. This Loop is a very rugged antenna system that is manually raised or lowered for clearance or stealth when not in use. • Of all simple vertical antennas over ground, the 5/8 wave radiator has the lowest angle of radiation, however the base of the 5/8 antenna presents a relatively low impedance, not the high impedance offered by the ¼ wave stub. That length can be divided by 3 for a delta loop or 4 for a quad style loop. When disassembled the antenna easily fits in a suitcase or backpack. The MLA-30+ plus Shortwave Loop Antenna can be mounted indoors. Aug 9, 2021 - 00:00. Magnetic Loop Antenna Pattern. It can be a condo dweller's only access to the world of ham radio or the best alternative for a backpacking SOTA (Summits on the Air) mountaintop expedition. Earlier, the presence of large HF Whip or auto tune vehicular antenna used to make vehicles an easy target But, the unique design of the ST-940B provides for a hidden, almost undetectable presence of en. Receiving HF signals from 600 miles away with Chameleon Loop antenna setup inside house. Some of the key features of the CHA RXL are: Stealthy - Navy gray loop fades into the background sky. The antenna consists of approximately 130 feet of #18 AWG black insulated wire and a sealed matching unit (about 6 × 5 × 2 inches) with stainless hardware and a sil - ver-plated, Teflon-insulated UHF socket. This paper shows the antenna performance and the benefit of the completely body integrated HF half loop antenna regarding whip antennas. The smallest and most popular selling loop-antenna. Brought to you by GF-LINK, this product is a high-quality hidden antenna with wonderful features on offer. Or contact us at [email protected] Regular price. A loop antenna covered by the lawn is the very definition of a stealth antenna, which should make it very attractive for people living with antenna restrictions. No pole is required. Delta Loop Antenna Radiation Patterns. A so-called random wire antenna is an end fed antenna. Once the shape is right then things such as element pattern, amplitude weighting, thickness, and edge treatment become important. In attic, spirals, wire. 42 sold 42 sold 42 sold. Essentially, this is simply a 30″ full-wave loop, so the full wavelength is 30″, which is for about 394 MHz. ANTENTOP- 01- 2017 # 021 Stealth Antennas for Amateur Radio 5. Depending on where the trees are, you might be able to put up a decent length of wire. Jun 30, 2018 - HF Antennas Especially stealth models for those in an HOA. Our next project will be adding a Frequently Asked Questions and Documents & Information page about Hi-Q Antennas. The Stealth Loop by Ciro Mazzoni was designed to provide an effective antenna to users with limited space. Requires careful attention to isolating stray pickup from:. 3:1 (typical) > Front to Back ratio: 6dB stealth loop fronte retro. Magnetic loop antenna tuner circuit diagram (click to enlarge) Besides the Arduino board U1, the schematic contains the the blocks listed down below. Building on the experience I gained with a small transmitting loop, I. The stealth antenna by Pierluigi Poggi IW4BLG This project was triggered by the desire to make available an easy to build active antenna to boost the passion for radio listening on HF and lower band, down to VLF. Definition: An antenna is a piece of metal, a co nductor of electricity, to which you connect the radio. An L-match antenna coupler with no variable capacitor; An Unusual Jpole Antenna; An unusual stealth antenna one foot above ground. At this point the antenna will then be driven to its lowest tunable frequency of 6,600kHz, display the resultant SWR, and stop. It's a dual band antenna and works impressively well on both VHF and UHF. 5-57 MHz Read the reviews on eham. Experiment 1 - Vertical Attached to Ground Rod with No Radials. Stealth or Attic antenna. Now that the sunspot numbers are declining I needed something better than the built-in whip antenna on my portable shortwave receiver. 0 distinguishes itself from the competition. Our next project will be adding a Frequently Asked Questions and Documents & Information page about Hi-Q Antennas. Below is one of my favorite HF direction finding antennas that I often use when tracking down RFI on 160 meters, especially if I want to go stealth. In 1970s central Minnesota, stealth operation wasn't necessary — although I'm sure my parents would have preferred something a bit more reserved than my backyard maze of antennas and feed lines. The Bryan Amateur Radio Club is a 501(c)(3) nonprofit organization. AEA, (mfr of my loop), is no longer in the antenna business. In addition, the ferrite rod is cushioned on a bed of silicon rubber inside the ABS cabinet for added durability. THE STEALTH LOOP is a small HF antenna with continuous coverage from 40 to 10 m. Lets get it on the roof, test it out and talk about why receive loops can be pretty awesome. 30-Meter Magnetic Loop Antenna Page 5 of 5. 8 MHz) through 30 meters(10 MHz) • Running maximum legal power (1500 watts PEP) will overcome lower antenna gain relative to big antennas on the higher bands. You are now part of the magnetic loop HF antenna craze that is sweeping the amateur radio community. PERSPECTIVES OF HF HALF LOOP ANTENNAS FOR STEALTH COMBAT SHIPS. The sloper's feed point is anchored high above ground near the top of the tower on which sits a grounded HF yagi beam antenna. Stealth Antennas More information >> Please Select Pricing. compare antennas. Power Rating - The antenna is rated for a maximum RF power of 150W PEP. 75 degree 3 dB beam width. For stealth applications, it is required to reduce in-band as well as out-of-band RCS of antenna system. Can't afford $2000 for beam, tower, and rotator THEN, you can't afford to overlook the. This forms a two-wire transmission line, which helps to reduce external fields. Our next project will be adding a Frequently Asked Questions and Documents & Information page about Hi-Q Antennas. 5-30MHz range as 9300 inductors. Making it difficult to see. AEA, (mfr of my loop), is no longer in the antenna business. The objective of this article is to disseminate some practical information about successful homebrew loop construction and to the loop’s key distinguishing enumerate characteristics and unique features. In his article, I will try to bust some of the myths associated with Inverted V and dipoles. Dealing with high voltages and extreme narrow bandwidth are the price paid for an antenna that makes a magnetic near field, which seems to penetrate nearby conductors, such as trees, the ground, house wiring, powerlines, etc. Four-Foot Vertical 20m Magnetic Wire Loop Stealth Antenna. No pole is required (unless you want to use one!). 0 (CHA F-LOOP 2. An ohm meter shows a good connection of the coupling 6′ next drain pipe is about 12′, giving me a total of. A NOTE ABOUT KEEPING YOUR SECRET! The use of stealth and hidden antennas is only half of the game to operating in restricted or HIGH DENSITY HOUSING. So EASY TO HIDE and WORK SO WELL. The Alliance U-100 rotator that turned it was nearly asold and erratic. My first contact moments after putting the antenna together in my back yard was Reykjavik, Iceland with 25 watts PSK31 on 20M! Not bad from St. The G4ILO Wonder Loop is an inexpensive, easy to make magnetic loop antenna that covers five HF bands, 40m through 15m. To: [email protected] The two above pictures show the radiation pattern of the Delta Loop fed in the bottom corner of the antenna. Discussion in 'Antennas, Feedlines, Towers & Rotors' started by N3VEZ, Sep 6, 2021 at 1:20 AM. A variety of cw keys and paddles. Icom AH-740 HF Ham Radio Mobile Auto-Tune Antenna (brand new, amazing price) $1,450. 8 MHz), MIDI Loop (3. The Stealth will work with any HF radio. 5 KHz and 30. 160M Loop Antenna Project. It was a homebrew affair, built during the remarkable solar peak of the late 1950s. THE STEALTH LOOP is a small HF antenna with continuous coverage from 40 to 10 m. Mini loop antennas can be. The Delta Loop is not only a great transmitting antenna but a low noise receiving antenna. This doubles the radiation resistance, doubles the SWR bandwidth, doubles the antenna efficiency and increases the radiated energy by 3dB. Paint it a dark color for stealth, and to avoid corrosion. Apartment Loop (page 22) Portable Loaded Loop (page 23) Do you think going with a magnetic loop like those from MFJ is a better option that doing one of the many wire antenna options with a SG-237? People seem to like MFJ magnetic loops other than some quality control issues and learning to turn it. Ugh! Phase three was putting up a second loop; a dedicated 80m antenna. This allows the D10 comms wire to easily go through and also supplies some springy strain-relief when the wind blows. Broadcast Range. Antenna Loop, Verona, Italia, VHF. Building on the experience I gained with a small transmitting loop, I. The 3 foot diameter magnetic loop antenna operates most efficiently on the HIGHER ham bands. A suitable integration of a HF half loop antenna at ship corners contributes to the ship stealthy. February 19, 2015 TVARC Antenna Guide for The Villages 8. Aug 9, 2021 - 00:00. 5 KHz and 30. One thing you learn with this stuff is that there is no one magic bullet. A special designed HF antenna brings a high quality communication over 1000NM. Become a WSPR Reporting Station on the. Just as the name implies the "loop antenna " is an antenna made in some configuration of a loop. Stealth Antennas are a Compromise Multiband Antennas are a Compromise Pick one from the list below; Rain Gutter Loop D A Shack D C F F F D C C D D D F WL Vert Loop B B Shack B B B A B A B A B A C F Magnetic Loop C A F B D C C C C C C C D D D Villages Antenna Guide. Receive loops are very quiet and highly directional. Bypass the loop when the rig is set to bands other than 160/80/40m. Stealth Antennas More information >> Please Select Pricing. When disassembled the antenna easily fits in a suitcase or backpack. Magnetic loop antennas for CB are not commercially available even though MLAs for CB can be more effective than other widely used antennas. HF ANTENNAS-80m full-wave horizontal loop up 35 ft; right above roof line of house, extends to rear of lot -40m/15m multiband dipole up 28ft; in a couple of oak trees in my backyard -20m 2 element wire beam in attic up 24 ft; beam is attached to rafters with insulated standoffs - Cushcraft R7000 vertical antenna up 14 ft; hidden in center of several oak trees in backyard. RadioWavz QRP Loop Antenna 40M-10M. KL7JR'S Confined Space Stealthy Loop 6-20M. By John Portune W6NBC. 1,494 likes · 7 talking about this. Hidden, Stealth & Invisible Antennas -- Smartuners for Stealth Antennas From SGC, Inc. This antenna just performs. AG6IF Talented Balun HP for build HF Ham radio Sky Loop antenna 160m80m & 40-10. Various QTHs from a mountain top overlooking the Great Smoky Mountains National Park, to our beachfront condo 100 yards from the Gulf of Mexico to our current home in Potomac, Maryland. 2(a): You can see that when erected in a straight line the dipole is quite directional. HF Verticals and multiband. 2(b): But when erected as an inverted-V you gain a couple of S-points (10 - 12dB) in the. In these circumstances a stealth antenna may be the solution to allow you to get on the air or even the answer to your planning difficulties. MFJ-1786 Loop Antenna – My Stealth Antenna Installations. No installation is needed: you can putTHE STEALTH LOOP on the ground, on a balcony, on a table, on the roof of your stationary car, etc. A half-wave dipole antenna consists of two quarter-wavelength conductors placed end to end for a total length of approximately L = λ/2. Or contact us at [email protected] 160m Capacitance Loaded Vertical Antenna. -160 meters (1. An Inverted V antenna is a very popular variant of the standard horizontal dipole. Earth ground is located 10-40' below - and the other end of the antenna may be 40-120' away! The worst case I have seen is a modeled scenario where a 160m loading coil was being used with a 1500W amp feed. HF Tactical Half Loop Antenna The Cobham antenna part number 3190-99 is a NVIS half loop antenna designed for tactical and on-the-move with a 150W power capability. Clothing Sets. Andrew / Decibel Antenna Side Mount Kit. This is between channels 13 & 14, which are frequencies of 210 - 216 MHz and 14. A large enough conductive sheet beneath a small loop perpendicular to that sheet doubles the effective loop area. An L-match antenna coupler with no variable capacitor; An Unusual Jpole Antenna; An unusual stealth antenna one foot above ground. 00 Free shipping Free shipping Free shipping. The CHA RXL is a new design high performance Low Frequency ( LF ), Medium Frequency ( MF ), and High Frequency ( HF ) receive-only loop antenna that can be permanently mounted outside on a mast or used on a camera tripod next to an RV or on an apartment balcony. One goal was to build an antenna which is not instantly recognizable as an antenna. M2 Antenna Systems Inc, Announces Release of L & C Band Circular Dish Feed (FGFD-2-LC-CC-1) M2 Antenna Systems, Inc with headquarters and manufacturing. Free standing Painter Pole Fan Dipole with W4EDF. Loop Antennas. Just as the name implies the “ loop antenna ” is an antenna made in some configuration of a loop. The purpose of this chapter is to summarize the results of antenna and radome technology which are of particular interest for antenna stealth. The gapless frequency-range is 6,9 up to 29,7 MHz. 12 turns of RG58U wound onto an Amidon 240-61 ferrite ring. Antennas for 20 Meters Antenna: 20 meters, Range: 14. Stealth Antenna Farm T. Vertically polarized loops. Disguising its appearance. Antennas/Magnetic LoopA small, easy to build, copper tube magnetic loop antenna for the 2 meters band. Just as a regular dipole may or may not always be of resonant 1/2λ length, an Inverted V too may not always be cut to resonance. Experimenters have noticed that the more turns there. MFJ-1020C, ANTENNA, SWL INDOOR ACTIVE ANTENNA. Stealth antennas for the loft Fig 4. No installation is needed: you can putTHE STEALTH LOOP on the ground, on a balcony, on a table, on the roof of your stationary car, etc. A large enough conductive sheet beneath a small loop perpendicular to that sheet doubles the effective loop area. 6 out of 5 stars 89. Choose Options. Durable Construction, Can be Used in Extreme Weather Conditions. A large enough conductive sheet beneath a small loop perpendicular to that sheet doubles the effective loop area. I love these loops. No installation is needed: you can putTHE STEALTH LOOP on the ground, on a balcony, on a table, on the roof of your stationary car, etc. Transcription. Total length is 5 ½ feet which is a practical length for a ¾ inch 200 psi PVC pipe. Add your 50 Ohm coaxial feedline, counterpoise, suspension rope and go. About Indoor Stealth HF Antenna The resource is currently listed in dxzone. http://chameleonantenna. 99: RSGB Member's Price £13. The Bryan Amateur Radio Club is a 501(c)(3) nonprofit organization. A NOTE ABOUT KEEPING YOUR SECRET! The use of stealth and hidden antennas is only half of the game to operating in restricted or HIGH DENSITY HOUSING. presented low observable antenna to reduce in-band as well as out-of-band RCS using FSS ground plane and loading the microstrip resonators. Can be used as a end fed shortwave antenna to provide continuous coverage from 500 kHz to 60 MHz. The MLA-30+ plus Shortwave Loop Antenna can be mounted indoors. The stealth antenna by Pierluigi Poggi IW4BLG This project was triggered by the desire to make available an easy to build active antenna to boost the passion for radio listening on HF and lower band, down to VLF. Antennas for stealth, limited areas or apartments are a challenge but there are many ideas available on the internet. From using house rain gutters and drain pipes, or a magnetic loop in the loft, through to a tuned loop around the window frame Stealth Antennas provides a wide range of ingenious antenna solutions. 8 MHz (45 to 10m), the maximum power is 125 W CW. The antennas run at 5 and six feet respect ively through PVC "T" connectors along the back fence to the opposite corners wh ere they make a 90 degree turn forward (on each side). The antenna is designed so that it normally operates when the hinged loop is raised. This piece is specially designed for portable ham radios. 160m Capacitance Loaded Vertical Antenna. MLA-S (MMT) QRP Review I tested the MLA-S (MMT) QRP antenna from my weekend QTH in Divice with power of 4W, using FT8. Attic and Stealth Antennas. WD8DSB tuned shielded loop antenna for RFI direction finding. Paint it a dark color for stealth, and to avoid corrosion. ANTENTOP- 01- 2017 # 021 Stealth Antennas for Amateur Radio 5. No installation is needed: you can put THE STEALTH LOOPon the ground, on a balcony, on a table, on the roof of your stationary car, etc. 0 Mag-Loop Antenna, It's a little bit warmer today than it was for our last- Well, 35 degrees warmer than the last video. Stealth type has been saved. 2(b): But when erected as an inverted-V you gain a couple of S-points (10 - 12dB) in the. A NOTE ABOUT KEEPING YOUR SECRET! The use of stealth and hidden antennas is only half of the game to operating in restricted or HIGH DENSITY HOUSING. The Bryan Amateur Radio Club is a 501(c)(3) nonprofit organization. These products include quality products manufactured by Stealth Telecom and other well known suppliers of radio communications equipment. 1) in Colorado Springs kept fading out. In fact, compared with any other antenna type, loops provide excellent and comfortable reception when reception with other antennas is noisy or completely. THE STEALTH MAGNETIC LOOP is a small HF antenna with continuous coverage from 40 to 10 m. Switchable in eight directions. The K9AY loop compares favorably with the 1WL beverage (see RDF table below). Broadcast Range. In Italian. Antenne HF loop magnetiche, Loop Antenna i3vhf. Chameleon P-Loop 2. I have a set of resonators for 15m, 20m & 40m that can either be run separately on the base whip or run altogether (similar to a Spider Antenna - only MUCH cheaper) with a $6. php?threads/buried-radials-and-pets. Use thin wire. With this loop antenna I earned my DXCC in about a year! An Indoor HF Stealth Antenna I found a way to have a reliable Indoor HF Antenna despite my antenna restrictions! SGC SG-230. Select the loop antenna based on the Ameritron's BCD aux output. From using house rain gutters and drain pipes, or a magnetic loop in the loft, through to a tuned loop around the window frame Stealth Antennas provides a wide range of ingenious antenna solutions. ARRL Product Review of the M2 6-Meter HO Loop Antennas. What stealth antenna’s are NOT! Typically stealth antenna’s are compromised antenna, in size and location, and are thus NOT great performers. Combined with its small size, the loop-on-ground design might make an effective low-noise receive antenna for people who live with a combination of a small lot and land use. Time Owned: 3 to 6 months. Add your 50 Ohm coaxial feedline, counterpoise, suspension rope and go. Maximum Stealth. This suggestion is a flop. Super antenna MS135 is the best quality wire for the ham radio portable antenna. The antenna has only ever been used at home location and is in FIRST CLASS condition. THE STEALTH LOOP is a small HF antenna with continuous coverage from 45 to 10 metres. I live in condo unit and most of my antennas are stealth affairs hidden behing the fences of my 2 patios, in the attic, strung along the roof edge and alike. It was a homebrew affair, built during the remarkable solar peak of the late 1950s. 10M Bent Attic Antenna - A Yagi No Less Hidden Attic Antenna -- From NU3E -- An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 40, and 80 Low Frequency Attic Loop antenna - from Bill Farmer W3CSW Attic Loop antennas - from William Hansgen. Flagpole, roof vent, weather vane, satellite dish 3. A whopping 11422 miles from my QTH. Diameter is only 1m (ca. 1,494 likes · 7 talking about this. In attic, spirals, wire. I used / am using this MFJ-1786 antenna at various QTHs from a mountain top overlooking the Great Smoky Mountains National Park, to our beachfront condo 100 yards from the Gulf of Mexico to our current home in Potomac, Maryland 15 miles from the White House and Congress - and from all three locations worked a total of over 100. Transcription. A loop antenna covered by the lawn is the very definition of a stealth antenna, which should make it very attractive for people living with antenna restrictions. php?threads/buried-radials-and-pets. Most antennas are made of copper or aluminum, while most mobile antennas are made of. I presently have two 20 meter wire dipoles at about 45 feet. 5 dBd (dB referenced to a dipole) or a little over 9 dBi. Figure 1: Classic rain-gutter-height loop, elevated on standoffs (stylized for emphasis) To find out, I challenged the rain-gutter loop with EZNEC antenna modeling software. This design also allows me to stealth) and bungie cords. Choose Options. I recently purchased an ICOM IC-705 radio for QRP but also wanted to use it in my home. DDRR using the metal roof as a counterpoise could work. Purple Martin Birdhouse Antenna: Not so uncommon is the ground mounted vertical wire antenna design installed inside PVC pipe. , US Patent 13,588,905: Are you looking for a stealth and short receive HF antenna able to reduce QRM ? Here is one: Wellbrook antenna ALA 1530, an active magnetic loop antenna 93 Jan 5, 2019 — In the. 75 inches—smaller than the ClearStream Flex but still a little on the large side for a flat antenna—and it's reversible, with black and white sides. 8 MHz (45 to 10m), the maximum power is 125 W CW. Brand new parts for this antenna assembly, including the $50 speaker stand, will set you back about $250… more than a little, less than a lot. Stealth antennas for the loft Fig 4. The CHA RXL is a new design high performance Low Frequency ( LF ), Medium Frequency ( MF ), and High Frequency ( HF ) receive-only loop antenna that can be permanently mounted outside on a. GENERAL SPECIFICATIONS > Frequency Range: continuous coverage from 6. I live in a Conservation area in Penrith, Cumbria, IO84oq where outdoor visible antennas are not permitted. You really do need that RG-59. Loop antennas are still great, though, because they're a very easy gain antenna to construct. Vertical Square loop Stealth Antennas •K2AMV dual-bander K8YC Spiderbeam. Well today I'm with Joe KD9CGX and we're setting up the Chameleon P-Loop 2. Experimenters have noticed that the more turns there. From using house rain gutters and drain pipes, or a magnetic loop in the loft, through to a tuned loop around the window frame Stealth Antennas provides a wide range of ingenious antenna solutions. It does not have to be perfect, just try something and see how it works. • Stealth wire antennas, however, often have the same gain as non-stealth wire antennas. A friend, WA7YLI, has similar interests. 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". It comes ready to use with mast clamp and LCD ctrl unit. The loop is rigid enough to maintain its shape but flexible for portable transport or attic installation. Disable the loop and short the RX input while in transmit to avoid any RF present in the event the loop were to pickup significant amounts of the TX energy. I love these loops. My freshman year in college coincided with a solar cycle peak and marked the beginning of my career in Stealth Amateur Radio. From using house rain gutters and drain pipes, or a magnetic loop in the loft, through to a tuned loop around the window frame Stealth Antennas provides a wide range of ingenious antenna solutions. A loop antenna will be resonant (with a purely real impedance) as the perimeter of the loop approaches one wavelength in size. 2m mag loop and even a 5m active loop. ARRL Antenna Book - 24th Edition Paperback More information >> Please Select Pricing. 6 out of 5 stars 89. The goal is to get some radiation out. The Stealth ST-940B Mobile HF NVIS Magnetic Loop Antenna has been developed to address the emerging need to reduce the visibility of vehicles fitted with traditional HF antenna systems. Apel 2 •Why stealth ? Restrictive neighborhood covenants ! LOOP REMOTE TUNING CROSSBAND COUPLER CROSSBAND COUPLER OMNI / YAGI SELECT CROSSBAND HF COUPLER 50 MHz 222 MHz 144 MHz 432 MHz 1296 MHz 902 MHz 927 MHz 440 MHz. Loop Antennas Full-wave horizontal loop: good for short-range communications, NVIS or "cloudwarmer" antenna. Mini loop antennas can be. The time had come to replace my three-element Yagi antenna for 6 meters. 4 Indoor and Stealth antennas Window Ground‐Plane for 2 Meters 20. This suggestion is a flop. The devoted best wire for dipole antenna connoisseurs. Tim, just an update. • The full-wave antenna is voltage fed, so it readily. There is also an 80 meter Tak-tenna. With the built-in preamplifier, the CHA RXL will enable clearer reception than many large horizontal wire or vertical antennas. The antenna lead from the tuner "longwire" terminal to the antenna should parallel and be reasonably close to the outside ground lead, if possible. 8 MHz) antennas to the ATU 2. I have used it so far on 10, 17 and 20M with very good results. MFJ1780 14-30 MHz Loop MFJ1786 10-30 MHz Loop Several other models available. Directional Systems; Maximum Stealth! I haven't built any antennas in this category myself, but an antenna / flag pole design comes to mind, as well as using screw eyes to hold a wire loop just inches above your roof or shed. Since the antenna is "matched " the return loss is zero or extremely small. The gapless frequency-range is 6,9 up to 29,7 MHz. 75 degree 3 dB beam width. 0 and The CHA F-Loop 2. In these circumstances a stealth antenna may be the solution to allow you to get on the air or even the answer to your planning difficulties. If anyone has any unique HOA Stealth antenna set ups let me know. Hence, a 300 MHz loop antenna should have a perimeter of 1 meter or larger; a 2. Most of the criticisms of the W4OP loop I mention in this review are simply indicative of passive mag loops in general: narrow bandwidth, sensitivity to nearby metal objects, and the need for frequent re-tuning. The antenna to the first joint of the drain pipe is about 6 '. After owning the IsoLoop and doing some research on the Internet on small transmitting loop antennas there is quite a large (and cult-ish - in a good way) community of loop builders. -160 meters (1. Indoor antennas Indoor Stealth Loop 20‐4 Indoor antennas Slinky Antenna 20‐5 Indoor antennas Attic Screwdriver Antenna 20‐7 Log‐periodic Log‐periodic for 144, 222, and 432 MHz 15‐51 Log‐periodic TV Antenna Conversion 15‐51 Loops QRP Transmitting Loop 20‐12 Microwave antennas Horn Antenna for 10 GHz 15‐63. February 19, 2015 TVARC Antenna Guide for The Villages 8. The objective of this article is to disseminate some practical information about successful homebrew loop construction and to the loop’s key distinguishing enumerate characteristics and unique features. No installation is needed: you can put THE STEALTH LOOP on the ground, on a balcony, on a table, on the roof of your stationary car, etc. Stealth Antenna-Chameleon Loop Antenna; Stealth Antenna. Magnetic Loop Antenna for 2 meters. So mount a remote auto tuner such as an SGC or MFJ at th top of one of the posts and feed the loop, which would be attached to PVC pipes in to top of each upright. Stealth Antenna setup. The design I used as my template was: The top section was 30″ long. THE STEALTH LOOP is a small HF antenna with continuous coverage from 45 to 10 metres. 8 MHz) through 30 meters(10 MHz) • –. Magnetic Loop Antenna (above) - This hardly looks like an HF antenna to the untrained eye. Obviously, DF antennas like those depicted in FIG. Apartment Loop (page 22) Portable Loaded Loop (page 23) Do you think going with a magnetic loop like those from MFJ is a better option that doing one of the many wire antenna options with a SG-237? People seem to like MFJ magnetic loops other than some quality control issues and learning to turn it. The smallest and most popular selling loop-antenna. The 40 Meters band stealth vertical antenna by K7ZB "You're 30dB over 9 here…" So goes the consistently fine signal reports received from around the USA and beyond - on 40 meters at the peak of Sun Spot Cycle 23. I needed to hide my new bright and shiny Wellbrook 1530+ Active Loop Antenna from being easily observed by neighbours or my XYL!. These configurations aren’t necessarily round in shape, many people use lengths of copper tubing/pipe combined with 45 degree elbows to create the loop. Intended primarily for. The antenna is designed so that it normally operates when the hinged loop is raised. Just as the name implies the "loop antenna " is an antenna made in some configuration of a loop. Here are some construction photos of my Mag Loop stealth antenna for the attic. 0 Automatic Tuning Unit. 75 inches—smaller than the ClearStream Flex but still a little on the large side for a flat antenna—and it's reversible, with black and white sides. R adio Amateurs most often use inductively-loaded vertical whip antennas in HF mobile applications, but is there a better alternative despite the long popularity of vertical whips? This article describes principles involved in design of the Stealth Telecom. Figure 1: Classic rain-gutter-height loop, elevated on standoffs (stylized for emphasis) To find out, I challenged the rain-gutter loop with EZNEC antenna modeling software. Four-Foot Vertical 20m Magnetic Wire Loop Stealth Antenna. LOOP Antenna by I3VHF. The Loop Antenna. The loop is rigid enough to maintain its shape but flexible for portable transport or attic installation. MFJ-1786 Loop Antenna - My Stealth Antenna Installations | K3RRR Kilo Three Triple R Amateur Radio Station. HOMEBREW STEALTH ANTENNAS. 12 turns of RG58U wound onto an Amidon 240-61 ferrite ring. 5 dBd (dB referenced to a dipole) or a little over 9 dBi. Discussion in 'Antennas, Feedlines, Towers & Rotors' started by N3VEZ, Sep 6, 2021 at 1:20 AM. Ditch expensive cable and continue viewing your favorite local shows in full 1080p high definition at no cost. Stealth Vertical Antenna. Antenna tuning by stealth. The K9AY loop compares favorably with the 1WL beverage (see RDF table below). 5 KHz and 30. Tuned Loop Antennas. It is considerably lighter than the one I built which is perfect for. 160M Loop Antenna Project. Combined with its small size, the loop-on-ground design might make an effective low-noise receive antenna for people who live with a combination of a small lot and land use. However, high voltages are present in many radio products, and only a skilled technician should attempt to remove outer covers and make adjustments and repairs. The antenna consists of approximately 130 feet of #18 AWG black insulated wire and a sealed matching unit (about 6 × 5 × 2 inches) with stainless hardware and a sil - ver-plated, Teflon-insulated UHF socket. MFJ1780 14-30 MHz Loop MFJ1786 10-30 MHz Loop Several other models available. For QRPX 2021, the NTC Operations Group, Fort Irwin, CA station had the opportunity to deploy several Chameleon Antenna systems to use in the competition. The Stealth ST-940B Mobile HF NVIS Magnetic Loop Antenna has been developed to address the emerging need to reduce the visibility of vehicles fitted with traditional HF antenna systems. However, thanks to other hams like Steve AA5TB there are tried and tested designs, calculators & building methods that are known to work and that you can follow. CommScope DB404-B 450-470 MHz Folded Dipole Antenna 5dBi Gain. diminutive magnetic loop antenna can really perform in practice compared with large traditional HF antennas. To play, press and hold the enter key. Simple DIY Stealth Apartment Antenna for HF. The Flatwave Amped Pro measures 13 by 11. 68 feet ) is designed to attach to a wall. Posted on February 26, 2013 by g0isw. Band (s): 3. These products include quality products manufactured by Stealth Telecom and other well known suppliers of radio communications equipment. Receive loops are very quiet and highly directional. 74 Microwave antennas Horn antennas for 5. For QRPX 2021, the NTC Operations Group, Fort Irwin, CA station had the opportunity to deploy several Chameleon Antenna systems to use in the competition. This can be accomplished by any of the following: • Making it difficult to see. 160m Loop Antenna for TX. One goal was to build an antenna which is not instantly recognizable as an antenna. Mar 02, 2017 · The STEALTH Kit contains everything a novice or professional needs to erect an antenna in any location—and provides performance equivalent to most dipole antennas! And, in keeping with its’ name, the STEALTH Kit is an ideal antenna solution for restricted areas, such as condominiums and gated communities where dipoles and towers are forbidden. Stealth Antennas ARRL Status Report: The Amateur Radio Parity Act of 2017 ‐ 11/28/2017. Small size yields a natural stealth for HOA challenges. He commented to me that, even if a loop is only 10% efficient, that is only down 10 dB - about 1 1/2 S units. The two above pictures show the radiation pattern of the Delta Loop fed in the bottom corner of the antenna. AEA, (mfr of my loop), is no longer in the antenna business. 2(b): But when erected as an inverted-V you gain a couple of S-points (10 - 12dB) in the. For my delta loop that meant the wire would have to be about 27 1/2. Assembling an effective indoor antenna for the HF bands can be frustrating. Hence, a 300 MHz loop antenna should have a perimeter of 1 meter or larger; a 2. Stealth Antennas. Godar Model 10 AM antenna takes the ferrite loop design one step further than conventional designs. To: [email protected] 8 MHz (45 to 10m), the maximum power is 125 W CW. Antennas are available at Mouser Electronics from industry leading manufacturers. Windows come in all sizes so that loop may certainly 'fit' around yours. CIRO MAZZONI STEALTH MAGNETIC LOOP ANTENNA. It, and most of the local transmitters are only 7 miles away but on top of a mountain, close to 3,000 feet higher than our house. Hello OUTDOOR STEALTH LOOPers! Our idea of THE STEALTH LOOP antenna was born, because we learned from todays issues, to live our passion as we would like to do. 00 + shipping + shipping + shipping. Loop Antenna by I3VHF - BABY Loop - MIDI Loop MHz - the STEALTH Loop - HF antenne - antenne loop - magnetic loop - loop magnetiche - ciro. Just as the name implies the “ loop antenna ” is an antenna made in some configuration of a loop. The Stealth Loop covers a frequency range from 6. Here are some construction photos of my Mag Loop stealth antenna for the attic. Run on fence, up tree or on roofline 2. So let's review its characteristics. 2M-3SS, 144-148 MHz $149. Great antenna for QRP or Stealth home antenna. Most of the criticisms of the W4OP loop I mention in this review are simply indicative of passive mag loops in general: narrow bandwidth, sensitivity to nearby metal objects, and the need for frequent re-tuning. My first true DX contact shortly after installing the Titan DX was FT5ZM, Amsterdam Island. I needed to hide my new bright and shiny Wellbrook 1530+ Active Loop Antenna from being easily observed by neighbours or my XYL!. Stealth Antenna setup. Moravian Falls, NC 28654 United States of America (828) 738-6445. Diameter is only 1m (ca. R adio Amateurs most often use inductively-loaded vertical whip antennas in HF mobile applications, but is there a better alternative despite the long popularity of vertical whips? This article describes principles involved in design of the Stealth Telecom. If installing two antenna's are better than one, you may choose to install a. Windows come in all sizes so that loop may certainly 'fit' around yours. If your rig has a separate receive antenna input, checkout my antenna for you. Our aim was to build a magnetic loop for those who have to hide their antenna away from the eyes of home owner associations, neighbors or other likeable, sympathetic contemporaries ;-). loop antennas, there are a few new ideas to grasp. Midway through building my version of Loftur Jónasson - TF3LJ / VE2LJX 's Automatic. The design I used as my template was: The top section was 30″ long. If your roof-loop or whatever picks up a lot of noise, you could continue to use it as a transmit antenna and buy or build a rx-only magloop and TR switch. Discussion in 'Antennas, Feedlines, Towers & Rotors' started by N3VEZ, Sep 6, 2021 at 1:20 AM. The Wonder Loop is the perfect antenna for picnic table or hotel room. Vertical loops may be a single stand-alone loop (mono-loop), or they may be one or elements of a directional antenna, such as a Quad. One goal was to build an antenna which is not instantly recognizable as an antenna. Antenna tuning by stealth. Diameter is only 1m (ca. Receive loops are very quiet and highly directional. The Stealth loop from Ciro Mazzoni Radiocomunicazioni, a quick look and a listen. This piece is specially designed for portable ham radios. Stealth Gutter Antenna; Stealth Gutter Antenna for Ham Radio or Short Wave. I have always been what's known as an "Appliance Operator" - With the SG-230 smart tuner I have an indoor "point and shoot" antenna for 160 - 10. When I lived in NYC I had a 1/4 wave vertical on the roof deck. The hohpl--horizontally oriented and polarized loop 5. Balcony Antenna-- From Harry Lythall - SM0VPO Hidden, Stealth, HF Antennas -- From K3MT -- The GRASSWIRE -- You read it correctly!! Hidden, Stealth & Invisible Antennas-- Smartuners for Stealth Antennas From SGC, Inc. Add To Cart. A large enough conductive sheet beneath a small loop perpendicular to that sheet doubles the effective loop area. The full loop is cut at two opposite points along its perimeter, and the lower half is omitted; the upper half mounted on the ground at the cut points, sticking up from the ground like a satchel handle. Small size yields a natural stealth for HOA challenges. Stealth 9400 Key Features. Has anybody mounted the Stealth Loop on a roof? If so, did you place it on top of reflective material as they recommend? If so, what did you use? I ordered the antenna and atu cable and am planning out the mounting situation. Now that the sunspot numbers are declining I needed something better than the built-in whip antenna on my portable shortwave receiver. Footprint is only 50x50 feet and 25 feet tall. It only spent a week outdoors, and is in spectacular shape. The stealth antenna by Pierluigi Poggi IW4BLG This project was triggered by the desire to make available an easy to build active antenna to boost the passion for radio listening on HF and lower band, down to VLF. Building on the experience I gained with a small transmitting loop, I. EFHW-8010-1K-Plus™ Multi-Band End Fed Half Wave Antenna. My first contact moments after putting the antenna together in my back yard was Reykjavik, Iceland with 25 watts PSK31 on 20M! Not bad from St. and amateur radio. The purpose of this chapter is to summarize the results of antenna and radome technology which are of particular interest for antenna stealth. Time Owned: 3 to 6 months. Shape is everything when it comes to both the active and passive signatures of antennas and radomes. Loop antennas do work. Stealth Antenna-Chameleon Loop Antenna; Stealth Antenna. To play, press and hold the enter key. MFJ-1786 Loop Antenna – My Stealth Antenna Installations. The Loop Antenna.