160m Attic Antenna

Cheap antenna to make from 160m - 6m pop - The antenna is nothing more than a simple 2. This antenna has been made popular by the Emergency Amateur Radio Club of Hawaii (EARCHI). However, with an S8 noise level and only 20ft of garden, I dont hold out much hope. I tried an attic dipole and another compact antenna before this. What attracted me to try a Delta the most was the Delta's reputation for working well close to the ground. Poly-StealthTM high-strength antenna wire is made with high-strength, high-conductivity, bare copper-clad steel (BCCS) wire and insulated with a high-quality, UV-resistant polyethylene jacket to provide you with one of the strongest and longest lasting antenna wires on the market today. Weighing only 3 pounds, Air 60 is a lightweight yet powerful and durable antenna solution. It works well for local and DX communications if a ground-radial system is used with it. Roller Inductor Antenna Tuner. Both open ends of the copper loop were outside the boom with approximately 1. 5 0 58 ft end fed wire in attic W6 Division W7 Division W8 Division W9 tough on 160M, but my antenna minimal. The antenna could be scaled for other bands. A copper pipe J-Pole, a Discone antenna, and a Cushcraft boomer 13B-2 2 meter antenna. 2 Home Made HIGH POWER Magnetic Loop. Specifically, I wanted something to add 40m and 80m, and possibly even 160. * G4ILO's stealth antenna options * K2ZS indoor stealth antenna * KL7JR indoor rectangular loop * Indoor shortwave receiving antennas for SDRs * QST articles on indoor and limited space antennas * The DX Zone's 7 ideas for indoor antennas. 4 Stealth antennas for the loft 37 5 External antennas 75 6 Over-the-roof stealth antennas 81 7 Examples of external stealth antennas 99 8 Let's get really stealthy 123 9 Commercial stealth antennas 139 10 Avoiding interference and EMC issues 161 11 Maximising efficiency 177 Appendix 1 Glossary and abbreviations 184. In conjunction with the Chameleon MIL whip antenna you have a vertical for the 160m - 6m with only 3m length. Indoor/outdoor matching transformer, with outdoor weatherproof boot, 300 ohm wire terminals and 75 ohm F female jack, 24K gold plated fitting, carded. This evening I fixed the antenna onto roof. The other key purchases are an HF antenna, a VHF/UHF antenna, and a couple of cables for each. The Buddipole™ - HFportable dipole antenna system, Welcome to the home of the Buddipole™, an hf/vhf portable dipole antenna system which is designed to be modular, versatile, and efficient. Read honest and unbiased product reviews from our users. claimed it works on all bands from 160m to 6m. Fortunately the propagation. Can I feed it with ladder line and get rid of coax cable or should I build A new dipole for 160,75,40 meters and feed it with ladder line I have manual tuners and auto tuners too. The Boring Ham Radio Part this was that vertical antennas can be very effective on 160m, perhaps also on 80m. Antenna Small footprint and very good gain Build for Less than $400; buy for < $500. When you consider it is only 8ft. Most of the time I've used long wire antennas simply because they were easy to put up; they have been outdoors, in an attic, and down a hallway in an apartment. But height is very limited above 70 feet. One combination that fits nicely is 3/4" copper pipe with 3/4" CPVC fittings (not to be confused with 3/4" PVC fittings which will be too large). Just completed the CQWW 160M SSB contest and i think the antenna has proven itself. And as the 160m season heats up this winter, the noise level of the house with the attic 160m dipole was a serious limitation to doing any real work on that band. This antenna is unlike most compact antennas with elements running parallel to one another and in close proximity making the elements are tightly coupled, while the completed antenna uses less real estate, there is a great deal of interaction between adjacent elements. The fact is most guys who talk about attic antenna limitations are not serious to operate. It's a dipole fed off center with a 4:1 current balun at the offset feedpoint. We immediately thought about simple AM rigs for topband (160m). The biggest mistake made when selecting the best TV antenna for attic installation is selecting an antenna that's too small and inadequate to do the job. Ultra-high-frequency antennas: These antennas are useful if you're trying to contact a very distant radio station, a process known as DXing in the radio industry. A camera tripod is a good choice for portable ops. Other noise is in the near field, which at HF, can be quite big. This suggests that this Slinky dipole appears to be 20% longer than a same-size wire dipole. This page gives some answers - from my perspective - of attic and stealth antennas hoping to set the record straight. Dipoles are relatively easy to construct and are pretty cheap compared to commercially available antennas and in some instances a simple dipole can outperform other 'compromise antennas'. RadioWavz Scout 40-10M Multi-Band Antenna RadioWavz Scout 40-10M Multi-Band Antenna This is an Omni-Directional antenna. The Mini Whip stick was mounted inside of the house in the attic just 50 cm bellow the ridge of the roof. Doing so entailed slithering around in my attic, which is a complete mess after a roof replacement earlier this year. Anticipating it may need to be installed hidden from view along the side of a building or home, rather than in the preferable location in free space, the ground radial system uses two rotating rings. The internal tuner of my FT950 tuned this antenna also on the other bands. So far the best DX is KP4 on 15m at just 5w SSB. should include smaller loop/frames and ferrite antennas. We don't build "high-power" antennas. These antennas can be mounted horizontally, vertically or as a sloper. Clothesline Antenna. 4335 Steeles Ave. He spent 21 years with Goodyear Aerospace Corp, 6 years with Tulane University and Il years. I have a 5/8th over 5/8th vertical collinear antenna hanging in a tree at some 30 odd feet high, but I never heard anything on it, except on FM. 5 0 58 ft end fed wire in attic W6 Division W7 Division W8 Division W9 tough on 160M, but my antenna minimal.  He uses this antenna efficiently on several bands from 160 thru 20m, but he has three different matchboxes, one for Top Band, one for 80m and one for 40/30/20m. G5RV Antenna 15 22. Antennas in the Attic: Ham Nation. A vertical HF antenna offers many advantages—an omnidirectional signal collector and easy to install radiator are two of the biggest. The antenna is oriented on a North-South axis, more or less. GM3WUX - Conditions not great, but I’m only using my doublet now. A closer view of the 144 MHz halo antenna. Make full use of your sunspot cycle with PATRIOT'slow angle signal. I've received good reports and finally am able to operate on 80m without the tricky tuning of my 40m Doublet in the Attic. DXing with restricted antennas and/or low power. Mobile whip dipoles. for the 160 Meter Band. So far, I have a VHF/UHF antenna and a 50’ cable. It can be. January 2018 160m QRP/CW Sprint. Since it is a full wave antenna, you get twice the wire of a dipole into and onto the air. It is desireable to ground your antenna to a good earth ground, but if this is not possible, then the next best thing is to use the ground in your electrical system. 4335 Steeles Ave. Page (3) 2. I hope to use the antenna on 40-10 meters. I hoped to find something that would work on with a 100 Watt HF transceiver on all bands from 80m through to 6m. 2 Antenna Analyzer. End-fed wires. 73 Amateur Radio Today. However, with an S8 noise level and only 20ft of garden, I dont hold out much hope. HF Vertical Antennas and Packages. Assembling an effective indoor antenna for the HF bands can be frustrating. The new BB7V multiband vertical antenna provides coverage from 2 MHz to 30 MHz without radials and requires the use of a tuner. Kasakhstan, Greece, Cypress, Turkey and Canada. I am soon to replace my smaller gauge wire with #8 speaker wire. My country total with these simple antennas is 113 worked in all modes, 84. Verkürzte Antennen-- Short Dipoles and Verticals for 160m & 80m -- by DJ9RB; Home Made Antennas from WE6W - Bazooka Antennas and more. My ham club suggested a 102 feet ZEP antenna for me (center fed) with a ladder line 450 ohm. A shortwave listener, using an attic shortwave antenna, wrote HamRadioSecrets. Home brewing a simple antenna like that is an attractive idea. The Zepp is composed of a 25' matching section and a 50' radiator. The tower on the right in the picture supports the antenna as described above. While I lived in Exton, PA my home was in a townhouse community with very restrictive covenants on owner changes to the exterior of the properties. It is desireable to ground your antenna to a good earth ground, but if this is not possible, then the next best thing is to use the ground in your electrical system. Feed-line about 10m of the 50 Ohms cable down to the radio-room. com Receiving only antennas is a curation of 82 resources about , Comparison Chart of Rx antennas, Triband Receiving Loop for 160/80/40m, The K7TJR Array 160m antenna, The W2PM Mini Diamond Receiving Flag, Archimedean Spiral Antenna for RTLSDR. Your first antenna – the half-wave dipole. No Antenna is Perfect But, how about one that you can: Can be home-brewed or purchased Use on 20, 17, 15, 12 and 10M with an SWR under 1. ULTIMAX offers several antenna designs for stealth operation, we also provided great support in choosing the antenna better suited for your situation. 22 Different Wire Antennas. Portable antenna systems for HF VHF UHF. In fact, a half-wave dipole will often outperform many compromise commercial multiband antennas. This vertical antenna has no lossy traps or coils to burn out. Lacking outdoor space for that antenna? Here’s what one can do: Put as much wire in your attic as you can run in the shape of a loop. People who have been trying to find the very best attic omnidirectional hdtv antenna on the market can finally breathe easy! We picked ten highest-ranking attic omnidirectional hdtv antenna that money can buy. My noise antenna is a 40 to 10 meter multi-element wire-dipole located in the West end of the attic of my home. GB3BR Brighton has just come back on the air so I’ll be monitoring. There are gaps between the cover and the antenna, and others who have installed the MFJ out of doors claim to have experienced problems after a year or two and found insects or even wasps nesting inside! Installing the antenna inside the attic avoids such problems. Just completed the CQWW 160M SSB contest and i think the antenna has proven itself. MFJ-993B Automatic Antenna Tuner, MFJ993B, mfj5124. This would be 109. DXing with restricted antennas and/or low power. 6 pounds, makes it very manageable during the installation process and will allow for a simple mast solution. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. This multiband vertical designs provide 9 band coverage encompassing the 6, 10, 12, 15, 17, 20, 30, 40 and 80 meter bands. Since it is a full wave antenna, you get twice the wire of a dipole into and onto the air. For example, ability to rotate the antenna facing cell tower or keep antenna away from devices that may be the cause of the signal interference. Though I have had great success with my simple attic mounted 20m dipole fed with a balun and ladder line, I’ve been looking for a new antenna to expand my operating capabilities. Will be shipped out ASAP, please allow up to two weeks for delivery, thank you for your support. 40 metre loaded dipole summary This was an enjoyable project which offered big rewards for my efforts. Use our TOP 10 to make your decision. A guide to practical antennas from 630m to 60m By Mike Parkin, G0JMI SPECIAL OFFER ONLY £9. The antenna also uses an RF choke 11 or 22 ft. installation. The fact is most guys who talk about attic antenna limitations are not serious to operate. The easiest attic HF antenna giving you coverage of all (or most) amateur bands is a loop of wire round the perimeter, fed with a remote SGC autocoupler in the center, which will match the wide range of loads presented by the loop on all bands to the 50-ohm coax used for the feeder. The designer of the Wonder Wand L-Whip set out to create a Miracle Whip killer, and in my opinion he has succeeded. 8MHz) DX operation The Mini Whip stick was mounted inside of the house in the attic just 50cm bellow the ridge of the roof. I figured throwing the antenna up in the attic couldn’t hurt, and any lightening strikes should be picked up by the trees, lightening rod, or my nice new UHF antenna. It is essentially a coax fed G5RV scaled for best performance on 25 meters. Jun 7, 2018- Explore jackheidt's board "Antennas HF", followed by 262 people on Pinterest. The only time this may not work is if you are trying to tune a short (e. Note: this antenna can withstand quite a bit of power but we have NOT tested it above 150 watts. I have an inv-L on 160M, a vertical wire hanging out of a pine on 80M as well as a 40M 1/4 wave al over the same ground screen, about 4k feet of #14. The majority of hams can only dream of what it might be like to own a large directional array such as a Yagi. 44 Comments have to do most of the work actually IN the attic as the finished loop will not fit through the access hole. My noise antenna is a 40 to 10 meter multi-element wire-dipole located in the West end of the attic of my home. The top of the trap supports a whip, which is sized to bring the whole antenna into resonance on 80 meters. Be sure to check the blog sidebars for more antenna and propagation articles. antennas eg. TAK-tenna 80 to 6 meter Multiband Antenna. This page gives some answers - from my perspective - of attic and stealth antennas hoping to set the record straight. This antenna is unlike most compact antennas with elements running parallel to one another and in close proximity making the elements are tightly coupled, while the completed antenna uses less real estate, there is a great deal of interaction between adjacent elements. With up to 100W of transmit power, support for VHF, UHF, and HF (6-160m bands), and a high-quality digital signal processor for clearer sound, it covers all the bases for those starting out with ham radio who want something more powerful than a handheld device. We're talking about "reasonable" heights on a given band as discussed in the antenna literature. Indoor antenna choices include attic antennas, magnetic loops, loaded dipoles and more. At swap meets, buy up older ceramic insulators whenever you can. I do not understand why people study for an exam and learn the formulas for antenna lengths, obtain SWR bridges or antenna analyzers, and still buy pre cut commecial dipoles. External attic antenna offers flexible mounting options to optimize cell signal reception at an install. We had a very active group of self-styled community watch dogs that regularly inspect the neighborhood. Well here is same post I just made to yahoo group. A single sided printed circuit board is mounted inside a 10 cm long piece of 40 mm drain pipe (white), using end-caps. Antennas More on the Grid Dip Oscillator (GDO) '"; (Gate Dip Oscillator). Use two for the antenna wire (I use 33 feet on each side but you can 22 feet and above for 40m to 10m). How-To: Make a Multiband EFHWA for Amateur Ham Radio dianaeng Fashion + Technology Diana was a contestant on Project Runway season 2, graduated from RISD, and currently lives in New York City. Use this online calculator to determine the length of a full-wave loop antenna from the frequency. HF Antennas 101 l A good antenna may be the most important component of a good HF station - 1W QRP station + good antenna can be heard worldwide - 1KW station + bad antenna can warm the shack in winter l Major antenna types - Vertical ¼wave monopole - Horizontal ½wave dipole - Beam/Gain (Yagis, quads, etc. Ultra-high-frequency antennas: These antennas are useful if you're trying to contact a very distant radio station, a process known as DXing in the radio industry. All information, images, and documents on this website are the sole property of MFJ Enterprises, Inc. 6 feet for one leg, and only 27. I constructed this antenna with the most streamlined and easiest layout for my particular QTH. On 2 meters there was an attic mounted J-pole. Save hf attic antennas to get e-mail alerts and updates on your eBay Feed. Some years ago G6ALB and I wanted a simple talkback link that we could use when co-operating on experiments. •Need lots of room, keep them away from metal objects like heaters and ducts •Wire antennas can be run near the peak of the roof inside the attic, bent in odd shapes to match the space available. [Jeri] Builds A Magnetic Loop Antenna. This can usually be fixed by adding or removing five or ten feet of ladder line. The DXV is our non-stealth HF vertical. the antenna, minimizing 12R trap losses. Hi - I notice Diamond Antennas - now offers a BB7V and BB6W VERTICAL NO-COUNTERPOISE HF ANTENNA - for the ham bands. Dipole Antenna Length Calculator. The description he gave of his installation revealed several shortcomings that could easily be remedied. Antenna MAKERS CONTRUPTIONS for: Breakfast, = LUNCH= and DINNER! Also please note that, we for NOW, do not list the Hi-Q-2. I have heard all the excuses from hams about antennas and housing restrictions. You are looking at a AG6IF Talented Balun. * G4ILO's stealth antenna options * K2ZS indoor stealth antenna * KL7JR indoor rectangular loop * Indoor shortwave receiving antennas for SDRs * QST articles on indoor and limited space antennas * The DX Zone's 7 ideas for indoor antennas. With antennas. Getting a Big DX Signal on 160-10 m from One Small, Low Antenna Chuck Counselman, W1HIS I live on a small lot in a dense, inner suburb of Boston and Cambridge. In conjunction with the Chameleon MIL whip antenna you have a vertical for the 160m - 6m with only 3m length. Attic and Stealth Antennas. Big signal for the evening was K5CM on 80m (not bad on 160m either). My amp is automatically band switched by the 6700 and I have a antenna switch which switches in each bands vertical automatically so it makes contesting very easy. *FREE* shipping on qualifying offers. A popular and effective antenna for 160 meters is the inverted L. Attics are great locations for indoor antennas. Currently, only one antenna exists in the attic: an 80-10m trap dipole. Page (3) 2. Save hf attic antennas to get e-mail alerts and updates on your eBay Feed. It is a lightweight version of another biquad I used before. The small loop antenna is a closed loop as shown in Figure 1. So far, I have a VHF/UHF antenna and a 50’ cable. Antitheft, Conditioned Air, Fireplace, Chimney Flue, Electric Gate, Double Glazing, Double Entrance, Parabolic Antenna, Common Park, Swimming Pool, Security Door, , Closet Information request For more informations about this property, please contact us by phone or fill out the form below. An unbelievable Dual band Magnetic Mount Antenna, built like a tank for under ! Large diameter magnet, not the "newer" quarter size ones that get knocked … I have found publications in old Radio Amateur magazine regarding long wire antenna and it's benefits from my understanding conclusion was as follows : In th… Video Rating: 5 / 5. It is a great antenna for HAM radio operators living in HOA controlled housing, hams desiring a very stealthy RV antenna, Field Day operations, sailboats, portable operating, attic and backyard installations, ARES and RACES, etc. KE4UYP Linear loaded vertical antenna - This is a vertically and horizontally polarized antenna the Linear loaded 1/4 wave length vertical radiator introduces very little loss for 80 or 160 meters. Great for an attic!! Improve broadband response! Performs well at lower heights. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. It all depends on of available room you have to install this antenna. Sloping Dipole Antenna 11 16. The fact is most guys who talk about attic antenna limitations are not serious to operate. The new BB7V multiband vertical antenna provides coverage from 2 MHz to 30 MHz without radials and requires the use of a tuner. A small but efficacious HF antenna for restricted space sites is the highly sort after Holy Grail of. It works pretty well and can be tuned on 160m and 6m, but it is limited in direction. The antenna is designed to be fed with 50 or 75 Ohm Coax Cable of most any length with a Balun. My ham club suggested a 102 feet ZEP antenna for me (center fed) with a ladder line 450 ohm. R`s it is fed with 85 or so feet of LMR-400 coax. Thanks to all the guys with the repeats. I might have a use for this one in another scenario. Tarheel Antennas, Inc. For more information about the receiving station please click the callsign. Going through resonance on 80m and 160m the noise increases by 20 - 30dB, so the noise figure and amplification looks good. There are gaps between the cover and the antenna, and others who have installed the MFJ out of doors claim to have experienced problems after a year or two and found insects or even wasps nesting inside! Installing the antenna inside the attic avoids such problems. The attic was in a 5 story building, long enough for a 160m dipole. Amplified with CleanPeakTM RF Filter Technology. He spent 21 years with Goodyear Aerospace Corp, 6 years with Tulane University and Il years. And yes you can bend any half wave antenna (dipole or end fed within limits) into a V, Inverted V, vertical or inverted L to name a few. Currently, only one antenna exists in the attic: an 80-10m trap dipole. PA3GZK's WIDE BAND ACTIVE LOOP RECEIVING ANTENNA. 40m - 80m - 160m Short Dipole Antenna. is that of effeciency in the. Engineered for maximum performance with a 14 Gage wire to our coaxial mono band double bazookas of RG11. Read honest and unbiased product reviews from our users. Off-Center-Fed Dipole, OCFD, Windom, Whereas a Dipole is a half-wavelength long radiator, fed in the Center of two equal length legs, the Off-Center-Fed Dipole (which I prefer to call a WINDOM) is a Dipole whose feedpoint is at a point removed from the center of the antenna. Alpha Delta DX-EE Attic Install kd8mkg. For more information and pictures, see my web site. With the sunspots declining and the ionosphere becoming less absorptive of low frequency signals, 160M (and 80 also) will be in good shape over the next three or four years now. Courtesy of and designed by N2IMF Joseph R Mielko This downloadable calculator will provide you with good starting measurements for a basic ground plane, Inverted V or standard Dipole antenna. While I lived in Exton, PA my home was in a townhouse community with very restrictive covenants on owner changes to the exterior of the properties. Kasakhstan, Greece, Cypress, Turkey and Canada. I constructed this antenna with the most streamlined and easiest layout for my particular QTH. Dipoles are relatively easy to construct and are pretty cheap compared to commercially available antennas and in some instances a simple dipole can outperform other ‘compromise antennas’. 160m with an attic antenna would be a huge exercise in frustration I think -- unless you have a very local net you'd like to check into or something. The attic allowed me to gain a few feet in height over my 15' mast. Attic Antennas : by KC2GUC on February 27, 2001 Mail this to a friend! I started with an atic DX-EE and then discovered the W9INN dipole. An unbelievable Dual band Magnetic Mount Antenna, built like a tank for under ! Large diameter magnet, not the "newer" quarter size ones that get knocked … I have found publications in old Radio Amateur magazine regarding long wire antenna and it's benefits from my understanding conclusion was as follows : In th… Video Rating: 5 / 5. After the holiday rush settled down I hooked the autotuner to a resonant 40m dipole in my attic and found that I could tune several bands. Loft & Attic antennas for restricted spaces - M. Lacking outdoor space for that antenna? Here’s what one can do: Put as much wire in your attic as you can run in the shape of a loop. When you consider it is only 8ft. Antennas in an Antenna Restricted Community. Four buried ground radials completed the antenna. Be sure to check the blog sidebars for more antenna and propagation articles. This antenna works great like. Attic and Stealth Antennas. Each suspension method gives a different radiation pattern. Dipole Antenna Calculator. T antennas are typically used at low frequencies where it is not practical to build a quarter-wave vertical antenna because of its height,[4][8] and the vertical radiating wire is often very electrically short, only a small fraction of a wavelength long, 0. This antenna. So, I decided that for this winter, the vertical would become a dedicated 80m antenna. Published on 9/28/2011, 11:44 AM by KD8BIG. Post #1441. We build antennas that give you that extra performance. Today I finished the biquad antenna. Hi - I notice Diamond Antennas - now offers a BB7V and BB6W VERTICAL NO-COUNTERPOISE HF ANTENNA - for the ham bands. VK2MUS wrote: so the argument on the antenna is really a non event what is important to the developers is the look of the estate - your argument then is simply does the erection of the tower down grade the 'estate' the developers should understand that you can put a tower up using a trailer and they would have no control neither would the council as the tower is not attached to the ground or. 40m - 80m - 160m Short Dipole Antenna. 5 0 58 ft end fed wire in attic W6 Division W7 Division W8 Division W9 tough on 160M, but my antenna minimal. Let me know what to do with the dipoles is the fan dipole as good as the single wire. 25cm to 160m. Indoor and attic antennas. There is room for a 140 foot long antenna and also other trees for even longer. If this antenna was going outside it would then be waterproofed for protection, but in this case it was going in my attic. Note: this antenna can withstand quite a bit of power but we have NOT tested it above 150 watts. Establish the feedpoint as high as possible. It can be searched and filtered according to individual content. Here's some ideas. What I use are Myantennas CMC-0510-R chokes instead. In conjunction with the Chameleon MIL whip antenna you have a vertical for the 160m - 6m with only 3m length. Installing an Alpha Delta DX-EE Multi-band Dipole in my attic. This seems to be most common for direction-finding applications, but also for dedicated receive antennas on lower frequencies, such as 160m or 80m. This magnetic loop antenna covers the HF band from 10-30 Mhz. Enter the desired operating frequency in megahertz to get a good starting length for a dipole in both feet and meters. ULTIMAX offers several antenna designs for stealth operation, we also provided great support in choosing the antenna better suited for your situation. The best attic antenna performs equally well inside and outside, able to pick up a quality signal from a great range, and lets you enjoy quality TV entertainment without paying a cable subscription. Antenna Zoning for the Radio Amateur - ARRL Book On legal aspects of antenna restrictions; ANTENNAS by Rick Hiller W5RH; ARRL Antenna Projects Loaded With Many Antenna Projects; ARRL Loop Antenna Projects; Attic Antenna-- From NU3E -- An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 40, and 80 Meters. It's alot to ask of ANY antenna to go all the way to 160m. Cushcraft achieved a major breakthrough in the development of an HF multiband vertical antenna that has been specifically designed for use with a tuner and amplifier. Contact one of your local Diamond ® Dealers for current price & availability. I have heard all the excuses from hams about antennas and housing restrictions. Restricted Space Antennas. Note: this antenna can withstand quite a bit of power but we have NOT tested it above 150 watts. Which is described here The ability to quickly switch between different antennas is very useful and allows you to find the best performer for a given distance and operating frequency. *FREE* shipping on qualifying offers. I ventured onto a noisy 160m and got a few decent reports using my Loaded Mobile Whip antenna @ 55ft. The 40m band is where I have the biggest compromise with that antenna, especially since it's only about 15 feet off the ground. claimed it works on all bands from 160m to 6m. Going through resonance on 80m and 160m the noise increases by 20 - 30dB, so the noise figure and amplification looks good. I was going to make a multiband dipole, but I don't think I will have the room for one. Small Gauge Wire Makes an "Invisible Antenna" The Wireman sells #26 AWG "Invisible Toughcoat Silky" antenna wire which is a stranded & coated copperweld type, his catalog #534. April 1994. EF-SWL End-Fed Dipole Antenna 1-30 MHz: Princeton: SkyWave End Fed Random Wire Antenna 0. There are gaps between the cover and the antenna, and others who have installed the MFJ out of doors claim to have experienced problems after a year or two and found insects or even wasps nesting inside! Installing the antenna inside the attic avoids such problems. The original design concept and build are explained below, and in the presentation PDF at the link below. And Boy, does it. Plug - You might just want to bring out the big guns right from the start. A common question that I receive is what type of coax cable should I use for my J-Pole antenna. Contact one of your local Diamond ® Dealers for current price & availability. Though limited to 100w of power, this antenna system will give you a very respectable signal on Top Band. Post #1 How to determine coaxial cable length correctly fo 160m Short Vertical Loft Antenna-G3XBM QRP WERBSIT New 160 Meter Antenna. dipole in the attic short antenna seem to work even on 160m! Hope to hear you 2017 CQWW 160-Meter Contest QRM. Specifically, I wanted something to add 40m and 80m, and possibly even 160. It could make a good attic antenna. A remotely-tuned loop receiving antenna for LW and MW If your only knowledge of suburban Maryland comes from seeing the movie The Blair Witch Project, you probably think Maryland is a vast wilderness where it would be easy to pick up longwave broadcasts without interference. So far, I have a VHF/UHF antenna and a 50’ cable. The performance is okay, although you can see the SWR changes noticeably over the 40 metre band when tuning away from 7. On RX the normal noise level on the antenna at around 18:00 is 2-3 S units and dropping to zero in the middle of the night. What I Want. Have tried out the antenna it does all you say it was designed to do. There is room for a 140 foot long antenna and also other trees for even longer. He has had careers in both industry and acade- mia. Low Band Dipole Covers 160-80-40 meters with an overall length of only 100 ft. You can add a. They are often mounted too low, too close to trees, houses, power lines and other things that will detune them. Bob, WA1Z gave us a great overview of the impressive antenna hardware at Matt’s station. Antenna that are optimized for installations in attics or similar locations at low heights above ground. 30 foot) antenna on a low (e. It's alot to ask of ANY antenna to go all the way to 160m. It works pretty well and can be tuned on 160m and 6m, but it is limited in direction. No ground plane or counterpoise is needed. Well here is same post I just made to yahoo group. 40m Linear-Loaded Dipole I stumbled-upon this antenna design whilst searching for something resonant, but not too lossy for 40m working. Success with attic loop. I mentioned this station in My blog back in December, I had heard/seen him on PSK before but not managed to make a contact. These antennas have low radiation resistance and high reactance, so that their impedance is difficult to match to a transmitter. This 110 foot long wire and AH-4 tuner combination has provided superior results for me and has allowed me to operate on the 160M, 80M, 40M, and 30M bands. It made me think of spiders. But height is very limited above 70 feet. Active loop antenna for HF I’ve got an ever increasing noise floor at my QTH so I thought I would try an active HF loop to see if I can null out the worst of the noise. Courtesy of and designed by N2IMF Joseph R Mielko This downloadable calculator will provide you with good starting measurements for a basic ground plane, Inverted V or standard Dipole antenna. Unfortunatly we do not have the option of putting up many towers with a large quantity of yagi’s so the antenna had to be visually low impact, cheap, all band. I have heard all the excuses from hams about antennas and housing restrictions. Bob is the host of the popular Ham Radio broadcast, Ham Nation as seen on Twit TV and has featured and demonstrated this phased array system on two separate episodes. Make full use of your sunspot cycle with PATRIOT'slow angle signal. Some of the noise is in the far field of the antenna, and there just isn't much you can do about this besides move. This was done for a few reasons including 1) We believe that the dipole kit is much more versatile and will enable beginners to get. The internal tuner of my FT950 tuned this antenna also on the other bands. Particularly for those with space and/or budget limitations. After spending some time modeling OCF antennas, the closest antenna I could find to a true multi-band dipole with reasonable SWR on most bands had an 80%/20% leg length and 200-ohm feedpoint. This antenna, like nearly all antennas, works best when in the clear. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. Antennas in the attic. 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 short dipole for 80 meters; An Improved Multiband Trap Dipole Antenna; Apartament Antennas; Attic Antennas; Beverage antenna information; Boomless quad; CobWebb 5 band antenna; DL2HCB Multiband. 4 Stealth antennas for the loft 37 5 External antennas 75 6 Over-the-roof stealth antennas 81 7 Examples of external stealth antennas 99 8 Let's get really stealthy 123 9 Commercial stealth antennas 139 10 Avoiding interference and EMC issues 161 11 Maximising efficiency 177 Appendix 1 Glossary and abbreviations 184. Click on Calculate and the optimum length for that combination will be displayed in feet and inches. Unfortunatly we do not have the option of putting up many towers with a large quantity of yagi’s so the antenna had to be visually low impact, cheap, all band. The Par End-Fedz are a full length half wave dipoles, but with an important difference. Or use the tuner with a nice thin 40m dipole. What attracted me to try a Delta the most was the Delta's reputation for working well close to the ground. What I use are Myantennas CMC-0510-R chokes instead. My main interest for this setup is only HF HAM Bands DX RX from 160m to 10 m. The best attic antenna performs equally well inside and outside, able to pick up a quality signal from a great range, and lets you enjoy quality TV entertainment without paying a cable subscription.