160m Attic Antenna


Sentinel Hex Beams are directional antennas that provide great performance with reduced size, and weight. Under certain circumstances such a shortened dipole can also be used as balcony, attic or room antenna. It is a center loaded HF mobile antenna. Further experiments with the amp. This is a great question, as the coax you select can make a dramatic difference on the performance and range of your antenna system. Mounting ham radio antennas in the attic. Check if you are in my log. After consulting many of the available Internet sources, and by combining ideas, I was able to assemble an antenna that performed well, even under poor band conditions. mounted loops & Eiti t t dipoles. Beauty is in the eyes of the beholder. While 1/8th wave works reasonably well, better coverage is obtained if the antenna is mounted at about 1/20th wavelength above ground. For some frequencies, a wide range antenna tuner might be needed. A small but efficacious HF antenna for restricted space sites is the highly sort after Holy Grail of. the antenna, minimizing 12R trap losses. 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. Folded dipole antennas will work great if you do not have a metal roof. Zero sunspots but working DX on FT8! Is FT8 creating a “tipping point” for amateur radio at the very bottom of the solar cycle?. I've even put this in the attic of a friend's house by stabling it to the rafters nearest the roof, and 'zig-zagging' the low band wires (80 m) just to get is all up there. 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. Super-M Classic Base Base Antenna 25-1300 MHz: Super-M Ultra Base Base Antenna 25-6000 MHz: Solarcon: A99 Vertical 10-17 Meters DISCONTINUED: Surmen: SX- 3 Vertical 2M/440 : SX- 5 Vertical 2M/440 : SX-20 Vertical 2M/440 : Coax-Seal: Coax-Seal : Please also see: Amateur Wire Antennas: Amateur Mobile Antennas: HT/Portable Antennas: Antenna. RCA Attic Outdoor HD Antenna, Compact Design Preassembled No Tools Required, Received 4K Ultr. One of the antennas that has been around almost that long is the inverted-L. Is it a home brew or commercial antenna and what frequency is it resonant at?. 10M Bent Attic Antenna - A Yagi No Less 2 M 1/2-Wave J-Pole -- VHF-FM (Stealth) Antenna Made From 450-Ohm Ladder Line -- From KB1GTR & KB1DIG. The G5RV has a love/hate relationship among the ham community and most that love it at first soon learn to hate it when they erect a decent resonant antenna and see the differance it makes. Hairpin match. Antenna Loop reception 80m and 160m: Antennas for confined spaces, VK3YE: A crossed-dipole turnstile antenna for 2-meter ARDF: A Small Transmitting Loop Antenna for 14MHz and 21MHz: A Stealthy 75 meter Antenna, IW5EDI: An Indoor HF Stealth Antenna, K2ZS: A Stealthy HF Coat Hanger Antenna, KR1ST: Antennas for Limited Spaces, N1GY. In the first couple hours of having it up I was able to hear stations I could not hear before. Shortened / loaded 40 meter dipole for attics This morning, I removed from the loft, a pair of nested dipoles for 40 and 20 meters fed with one coax feeder. My dad and I experimented with attic antennas when winter storm damaged our inverted Vs for the lower bands. The first is an 80m dipole kit with instructions to build a very rugged legal limit half wave dipole. See more ideas about Ham radio antenna, Ham radio and Ham. The fourth and final spreader is installed at the bottom of the 20M trap supported by a plastic tie around the antenna tube directly beneath the spreader. Lucky are those who have the luxury of an attic in their home. Although no longer made by AEA, MFJ has picked up the slack here. Existing structures. ) Buckmaster 8-Band OCF Dipole Antennas are 270 feet (82 meters) long and work on 160 (tuner may be required), 80, 40, 20, 17, 12, 10, & 6 meters. EF-SWL End-Fed Dipole Antenna 1-30 MHz: Princeton: SkyWave End Fed Random Wire Antenna 0. An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters John DeGood, NU3E [email protected] I have a somewhat modified version of the same transformer coupled antenna up in my attic of my new house (in a restrictive covenants neighborhood) and run a 16' chunk of wire horizontally in the attic with this antenna. All HF longwire antennas - 160m through 6m (though both end feds suck on six!) Antennas on VHF / UHF / Beyond: Dual Band Arrow J Pole / Diamond D-130 Discone 25-1300 MHz coverage / Both in the attic for HOA reasons. Here is how I managed to get pretty decent results with a homemade antenna. I make use of the 40m dipole on 15m with some good results. A relatively high radiation resistance is there- fore also retained. W6LVP amplified receive-only magnetic loop antenna (boy is that mouthful): The W6LVP mag loop is a complete receive antenna system delivering top-of-the-line performance to amateur radio operators and SWLs. K4DXU: TN: W4. Both are designed as smarter, stronger, and more elegant all band options covering every frequency from 80 to 6M. Notebook showing Small Magnetic Loop antenna results by cutting and testing method. The Horizontal Loop, also known as the Loop Skywire Antenna, is an old but very effective design. Antennas generally perform best when they’re out in the clear, but there is no law that says you can’t use an outdoor antenna indoors. Low Band Dipole Covers 160-80-40 meters with an overall length of only 100 ft. A coaxial-cable trap dipole antenna installed in the attic provides a surprisingly effective solution to HF operation on the 10, 15, 20, 30, 40, and 80 meter amateur bands at a QTH with restrictive covenants that prohibit outside antennas. ("Bus") Healy, NJ2L Assistant Technical Editor ipole antennas have been widely used since the early days of radio. * 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. A First Antenna For HF Use Setting Up A Digital HF Station Building a 40m Delta Loop Antenna Satellite Station 4. Sometimes on 80 meters but there the 80 meters 2 * 20 meter dipole fed with open wire gave me more qso’s. A small current is transduced on the antenna and the reciever amplifies it and converts it to audio. DX Engineering Multi-Band Dipole Antennas are designs that are rugged, yet lightweight. Pretty much the name of the game on 160M & were doing it with 5 Watts! It's FUN!. Thanks to all the guys with the repeats. Fed with an L-network, it could load up on all bands -- even 160m. Enter the desired frequency and select the desired calculation from the drop box. Portable antenna systems for HF VHF UHF. •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. The DX Flagpole Antenna is an HOA approved, NO Radial, Stealth vertical antenna system. Contact one of your local Diamond ® Dealers for current price & availability. Although this appears to flout the conventional wisdom that the antenna tuner should be at the feedpoint, I was surprised to find that it seemed to work even better. With this receiver and a long wire antenna I learned there was quite an exciting world of foreign broadcast. We were 3km apart with Andrew being in the next village. Test/Site Conditions for our Quarter Wave Sloper vs Inverted-V Dipole Because of the above stated variables we wanted to test these antennas over the. The signals appear to be about 2 or 3 S-units down compared to the wire in the attic, but the noise is down 6 - so I appear to have a 3 to 4 S-unit signal to noise advantage over the attic antenna. An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters John DeGood, NU3E [email protected] mounted loops & Eiti t t dipoles. Looking for great quality tv antennas to fit your attic. That (and the fact that I could not figure out hot to get really high in the trees) limited me to installing the antenna at about the height of my extension ladder and below the major tree branches, which turned out to be about 20 feet above the ground. The second area in which a long wire loop offers advantages is in azimuthal coverage. End insulators are supplied making suspension easy. The antenna was 34 m long , with an average height of about 12 m. Here's a handy adjustment calculator and spreadsheet for choosing how much to trim your antenna elements to resonance. This dual band antenna works pretty well for the bands to which it was designed. This W2PM small Mini Diamond loop is compact, easy to built and cheap solution which can help a lot if you have nothing better for reception on TB. These are sometimes known as a Magnetic Longwire Balun. I was going to make a multiband dipole, but I don't think I will have the room for one. They look to be built very well. In part one of this series, I covered the use of one brand of commercially available, small transmitting loop antennas, also known as 'magnetic loops'. Further experiments with the amp. 73 Dave kc1di. Soapbox: My only antenna is a 20m dipole which does little for 40m, 80m, and 160m signal strengths. Those who say it won't work might be right -- about 160m. This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. I had also heard reports that this antenna is just a hair better than a dummy load on 75/80m. 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. Shortened / loaded 40 meter dipole for attics This morning, I removed from the loft, a pair of nested dipoles for 40 and 20 meters fed with one coax feeder. In conjunction with the Chameleon MIL whip antenna you have a vertical for the 160m - 6m with only 3m length. A good example is the Mini-Whip by PA0RDT, which is a very simple yet great performing antenna for VLF. To start viewing messages, select the forum that you want to visit from the selection below. Wound at 3. The Inverted V is more omni-directional than the horizontal dipole I was using. 160M Is a Tough Band • Wavelength makes antennas more difficult –Quarter-wave vertical is 130 Ft –Half-wave dipole is 260 Ft, and it’s “low” at only 130 ft –Verticals need radials or a counterpoise, and they work best if they’re fairly large. Antennas in the Attic: Ham Nation 125. It's a dipole fed off center with a 4:1 current balun at the offset feedpoint. Indoor antenna choices include attic antennas, magnetic loops, loaded dipoles and more. These are sometimes known as a Magnetic Longwire Balun. 0 Part 5 - New IC-9700 Transceiver An Introduction To The DXLab Suite Satellite Station 4. Just loosen the clamp at the end of the dipole and bend the wire back on itself (or cut it) to shorten it. Antenna that are optimized for installations in attics or similar locations at low heights above ground. The antenna was designed with portable operation in mind. When I became active with indoor antennas, I only had about 20 countries confirmed. WG8Y - Hi all, My best total in the 160m Sprint. And of course the antenna is easily removed if they ever do. A Hawaii-based Amateur Radio Antenna Blog focusing on the theory, design, and use of homemade antennas. The combination can work on any band from 160m up to 10m. com" IN ROOM ANTENNAS! In those cases where you can't put an antenna outside or up in the attic, then you can install it in the same room with the radio!. It all depends on of available room you have to install this antenna. 0 Part 8 - GPSDO Frequency Locking Mobile HF Installation - Part 4/4 (500W Amplifier, 160M and Accesories). The new BB7V multiband vertical antenna provides coverage from 2 MHz to 30 MHz without radials and requires the use of a tuner. Both are designed as smarter, stronger, and more elegant all band options covering every frequency from 80 to 6M. The attic was in a 5 story building, long enough for a 160m dipole. WIFB's Antenna Notebook and The ARRL Antenna Book describe methods for doing this. 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). End-fed wires. 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. MFJ-1777 Wire antenna, 160m-6m, doublet. I've received good reports and finally am able to operate on 80m without the tricky tuning of my 40m Doublet in the Attic. These antennas can be mounted horizontally, vertically or as a sloper. Just download the program and you're ready. With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids! The Slim is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take off angle. The purveyors of these antennas have to compete on price, so they often take short cuts. February 19, 2015 TVARC Antenna Guide for The Villages 7 Read every book on antennas or use Villages Antenna Guide to narrow the list "Villages Antenna Guide" is your shopping list Antenna On Air Stealth Tuner Install Cost 6M 10M 12M 15M 17M 20M 30M 40M 80M 160M Flagpole B A Remote D F C B B B B A A C D D Screwdriver B B None C D B B B B B. 73 Kriss KA1GJU. And´ujar, J. It’s a great antenna to fling out of a window for a low profile ham station. A guide to practical antennas from 630m to 60m By Mike Parkin, G0JMI SPECIAL OFFER ONLY £9. 0 Part 5 - New IC-9700 Transceiver An Introduction To The DXLab Suite Satellite Station 4. End insulators are supplied making suspension easy. Matthew (W0ZZY) had built one with homebrew ladder line and it seemed to work fine. That's because they can install an antenna to enhance the signal to ensure quality HDTV experience, or just watch local channels for free. Our wires start at 44 feet but longer length is recommended for coverage of 80m or even 160m band. Antennas in the Attic: Ham Nation 125. 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. Hello Bob! It’s not at all critical; anything from 1 to 6 inches will work. 20M tunes but the antenna has always been a dummy load on that band. Cebik, W4RNL 1434 High Mesa Drive Knoxville, TN 37938-4443 e-mail: [email protected] Within about a year, I had my first DXCC certificate! Here's some helpful tips for getting your DXCC with indoor antennas. Antennas, Towers; If this is your first visit, be sure to check out the FAQ by clicking the link above. I have heard all the excuses from hams about antennas and housing restrictions. Yes, it would certainly be possible to mount an antenna in your attic and use for both TVs (and reuse the cabling you have in place). The G5RV is the most popular multiband antenna in the world. The ground-plane can be a bowtie about twice or three times the loop size An attic. We dug into 60,000 user reviews to help. Hi Paul, yes the attic is very dry other than the humidity that is in the air are muggy days. The Hi-Q Series antenna is designed for mobile installation. This page gives some answers - from my perspective - of attic and stealth antennas hoping to set the record straight. My noise antenna is a 40 to 10 meter multi-element wire-dipole located in the West end of the attic of my home. Any reuse or redistribution of the contents of this website are strictly forbidden without authorization from MFJ Enterprises, Inc. 160M Is a Tough Band • Wavelength makes antennas more difficult -Quarter-wave vertical is 130 Ft -Half-wave dipole is 260 Ft, and it's "low" at only 130 ft -Verticals need radials or a counterpoise, and they work best if they're fairly large. I immediately had a noise level on 80m and 160m of about S2 or S3 (so 6 S-units down from my attic). End insulators are supplied making suspension easy. mounted loops & Eiti t t dipoles. Aug 30, 2016- Great Quality End Fed, FW Delta Loops and Windom Multiband HF Ham Radio Antennas. Tower Pole as a. But don’t be misled – just because they are easy to make doesn’t mean they don’t work well. Other noise is in the near field, which at HF, can be quite big. Restricted Space Antennas. How long does my AM radio receiver antenna wire need to be? I have some experience with using the 160m ham band, and if I could shoot all my neighbors SMPSs, I. I've included links to the music videos so you can play them in the background while you read - this might be more fun than my article…. Link to 5B4AGV (partly german) Contact: [email protected]. Having purchased an all-mode, all-band (160m - 70cm) transceiver, I became curious about what 2-meter weak signal operations have to offer. The range of these antennas starts at 30 megahertz with a maximum potential for 300 megahertz. ó , kdyh kdg \rxu pxowledqg hqg ihg dqwhqqd lqvwdoohg khuh lq 6lqjdsruh iru d ihz zhhnv qrz dqg dp yhu\ sohdvhg , xvhg wkh zluh iurp p\ suhylrxv dqwhqqd zklfk lv ihhw orqj ,w zrunv ehdxwlixoo\ , kdyh lw. Verticals & Inverted L antennas. as described above. Antenna Small footprint and very good gain Build for Less than $400; buy for < $500. This antenna. With that on my mind, I began polling the local amateur radio community, and was overwhelmingly pushed to a vertical, given my HOA restrictions. Quarter-wave matching section lengths are also calculated. This is an affordable wire version of popular 43 feet vertical antenna. They can come close to half wave antennas in efficiency, although efficiency decreases as they are made very long or installed closer to earth. The MFJ magnetic loop may be mounted vertically or horizontally. It’s often easier to get the main radiating part of the antenna (the centre of the half-wave) higher than it would be for a doublet or dipole as there is no feeder to support. "Noise is the constant companion of the stealth antenna warrior. Amy(AI6ZU) and I build a magnetic loop antenna for 160 and 80 meter amateur radio. For a while now I have changed my ZS6BKW antenna with an Icom AH-4 as coupler into a single wire antenna (still attached to the AH-4). Workman Saturn B100 Base Station Apartment Attic Patio Balcony Boat Truck Antenna. Pretty much the name of the game on 160M & were doing it with 5 Watts! It's FUN!. In the graph below I have plotted what MININEC predicts for the impedance of an end fed half wave antenna versus the "counterpoise" length. So that's all for now Update (11-20-2015) I originally only tested the antenna with my Ten-Tec C21 which had no WARC bands. 2(a): You can see that when erected in a straight line the dipole is quite directional. Antenna performance and 2:1 VSWR bandwidth is site dependent and varies with height above ground and surrounding objects. If you have an attic, for example, install the longest dipole you can and feed it with ladder line. The designer of the Wonder Wand L-Whip set out to create a Miracle Whip killer, and in my opinion he has succeeded. It is also a backup for 160M. * 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. antenna 6 to 10 feet off the ground will ever work particularly well. Ok, so I now had a 160m antenna that had a VSWR of less than 2:1 from 1810-1860 kHz. Our wires start at 44 feet but longer lengths are recommended for coverage of 80m or even 160m band. I have heard all the excuses from hams about antennas and housing restrictions. A few of the grab and go antennas kept on the back porch. For a while, I used a "Loop Skywire" -- a 80m full wavelength loop positioned horizontally. The antenna wire is made from flexible steel braid with transparent plastic coating. com following quote was copied out of "Ham Universe. 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. My attic is 50 feet wide and 40 feet deep with a peak 15 feet high. How long does my AM radio receiver antenna wire need to be? I have some experience with using the 160m ham band, and if I could shoot all my neighbors SMPSs, I. Big improvement over the MFJ, especially if AM BCB and 160m are important. Building an amateur radio antenna for 160 meters is a challenge. Low Band Dipole Covers 160-80-40 meters with an overall length of only 100 ft. Attic and Stealth Antennas. The attic is a hostile world of high temperatures, and over flowing with insulation. Long wire or random wire antennas are very simple antennas. It was built as a way of getting a signal out on 160m for local AM contacts, but the local noise level was far too high to allow it to be used at night for this purpose. 8-54 MHz The CHA EMCOMM II Antenna has been specially designed for backup emergency HF system or permanent installation. "Nearly all especially successful stations on 160 use a vertically polarized antenna of some type for transmitting. And Boy, does it. 40-10M antennas in an Antenna Restricted Community Over a period of several months prior to the completion of my attic antenna suite I operated with a borrowed AEA Isoloop antenna. Resources listed under Stealth Antenna category belongs to Antennas main collection, and get reviewed and rated by amateur radio operators. Fortify your existing antenna or build your own with high-quality brackets, clamps, tubing and supports from DX Engineering. This antenna. Elongated Loops and other loop receiving antennas such as K9AY, EWE, and flag antennas, small Topband or HF low noise receiving Verticals, my receiving antennas (with a demo), end-fire or cross-fire Beverages, common-mode noise in low noise receiving systems, and more. K4DXU: TN: W4. We also used a homebrew fan dipole obtained from an SK estate via one of the local clubs. Operators and Observers. February 19, 2015 TVARC Antenna Guide for The Villages 7 Read every book on antennas or use Villages Antenna Guide to narrow the list "Villages Antenna Guide" is your shopping list Antenna On Air Stealth Tuner Install Cost 6M 10M 12M 15M 17M 20M 30M 40M 80M 160M Flagpole B A Remote D F C B B B B A A C D D Screwdriver B B None C D B B B B B. The larger the wire, the wider the bandwidth. An Attic Coaxial-Cable Trap Dipole for 10, 15, 20, 30, 40, and 80 Meters John DeGood, NU3E [email protected] The antenna utilizes heavy 14 gauge stranded wire for maximum strength. Here is how I managed to get pretty decent results with a homemade antenna. Within about a year, I had my first DXCC certificate! Here's some helpful tips for getting your DXCC with indoor antennas. I just could never bring myself to go up there and give the antenna a proper hanging. All HF longwire antennas - 160m through 6m (though both end feds suck on six!) Antennas on VHF / UHF / Beyond: Dual Band Arrow J Pole / Diamond D-130 Discone 25-1300 MHz coverage / Both in the attic for HOA reasons. 5 turn per 25mm) Number of turns depends on the length of the antenna. Straightening Out the Inverted-L L. In fact, all ¼-λ antennas fed against ground require a radial system if losses are to be kept low. Hello Bob! It’s not at all critical; anything from 1 to 6 inches will work. The radio provides 100 Watts of SSB/CW/FM output on 160M thru 6M, 50 Watts output on 2M, and 20 Watts output on 70 CM. 25% efficient (19dB down from, say, a 1/4 wave vertical) and I was running 100W, I would possibly be very happy that I worked DX on 160m with "just 100W" As it is, if I'm right about my 160m antenna, I'm generally running 25W ERP (I don't have an amp yet) and I've got 93 countries worked. Wishing to get rid of the monthly bills and get quality signals with all your favourite channels. 5m vertical fed against a large metal roof using a 4:1 unun, 200ft of coax, and an auto-tuner at the transceiver Green is the 15m long wire bicone antenna mounted in the loft. Using a tuner, they are usable to 30 MHz and come complete with the wire elements, ladder feedline, center T support, and end mount brackets. Roland Antenna Long Wave Timing Positioning Receiving Antenna Active Antenna. My Magnetic Loop Antenna. What attracted me to try a Delta the most was the Delta's reputation for working well close to the ground. Wire antennas need to be made a bit long and cut to resonance. Well here is same post I just made to yahoo group. save Save Antenna Article Small Ant Efficiency antenna on 80m or 160m. End insulators are supplied making suspension easy. The antenna was 34 m long , with an average height of about 12 m. He did not claim it was a really good antenna on 160 (the discussion was mostly about how to get on 160) but that it did work and was better than no 160m antenna. It can also be applied to a noise source to null it out. conveniently be accommodated on a table top, hidden in an attic / roof loft, an outdoor porch, patio balcony of a high-rise apartment, rooftop, or any other space constrained site. Antenna Here is a Dipole You've probably heard this phrase in many QSOs. The NCC-1 System can be used to peak or null a specific incoming signal. C-Pole Portable Antenna for 20m Multiband H-Pole Antenna for 160m - 10m Vertcal Dipole for 40m (and higher) Buddipole Vertical Dipole for 40m Capacitive Antennas HB9MTN "REMOTE" Audio Modification for ALINCO DX-77. A 1/40th-wave, 160m antenna might consist of a 2-metre long slender coil with a 1 metre rod or A 160 meter antenna for small lot 160 meter antenna My back fence is 50 ft from the rear of the house and not enough room on the property for 80 meter wire antenna must less a 160 meter one, and this to work great with the sloper wire attached to a fence, I also use monofilament (non-conductive) line like fishing or Weed Eater line as support About Ford Meter Box. The 10-80 meter groundplane vertical antenna is a rugged multiband vertical antenna, That is 43 feet in height. Our wires start at 44 feet but longer lengths are recommended for coverage of 80m or even 160m band. To support an antenna, I have no tower, and only two trees that aren't too close to a house. For how to build information, construction details and material sources for this project, see my article: Building Dipole or Wire Antennas. This antenna normally has about a 3 DB gain over a 1/2 wave center fed dipole. 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 discone feed is the principal KH6BB antenna today. The antenna also uses an RF choke 11 or 22 ft. Alpha Delta tests antennas, in the clear (no surrounding objects), at a height of 35 ft. mounted loops & Eiti t t dipoles. These antennas can be mounted horizontally, vertically or as a sloper. End-fed wires. Each of these antennas works better at different lengths according to their height above ground and that usually takes a little experimenting at your location. The antenna in that location would not be very objectionable to my better half. 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. "Noise is the constant companion of the stealth antenna warrior. IAC Antennas featured on Ham Nation! IAC Antennas worked with Bob Heil, K9EID, to help him set up an IAC Phased Array at his new QTH. What type of feedline coax should I use for my antenna. Good luck with your low-band antennas! Al Buxton was first licensed in 1937 as W7GLC. 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. The antenna is oriented on a North-South axis, more or less. Roland Antenna Long Wave Timing Positioning Receiving Antenna Active Antenna. I have some big dipoles for 75m and 160m, but I don't think they work so good. Introduction Of the many different antenna projects I have built for HF, the most interesting and rewarding project was the small transmitting loop. In its nested configuration it is only 60" long and weighs in at 4. 2 to 1/4 wavelength wires out from the base of the antenna. Stealth antennas for the loft Fig 4. A coaxial-cable trap dipole antenna installed in the attic provides a surprisingly effective solution to HF operation on the 10, 15, 20, 30, 40, and 80 meter amateur bands at a QTH with restrictive covenants that prohibit outside antennas. I hope that's not a deal-breaker for you! Simple wire antennas often pleasantly surprise me. Beauty is in the eyes of the beholder. * 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. I started as an SWL in the early sixties with a Hallicrafters S-120 receiver. An off-air antenna is a product people use to receive over-the-air signals from broadcast TV stations. For a while now I have changed my ZS6BKW antenna with an Icom AH-4 as coupler into a single wire antenna (still attached to the AH-4). To keep this light, we'll use titles of Rock'N'Roll songs to theme the sections in this article. Operators and Observers. In this region your antenna isn't acting as an antenna, but rather one winding of a transformer, or one plate of a. Attics are great locations for indoor antennas. 10-80 Meter 100W Alpha Loop 100W 10-40M, 20W 40-80. With that on my mind, I began polling the local amateur radio community, and was overwhelmingly pushed to a vertical, given my HOA restrictions. I'm leaning towards an AEA or MFJ IsoLoop for 10-30 and the IsoTron for 40/80. Seems that if there's a 16' section available it will work better at 80m. com in a single category. First the IsoLoop: 1. Consequently, in some base station applications (attic, balcony, out a window, on a fence, or tripod installation) you may need to provide an adequate counterpoise by running several. See more ideas about Ham radio antenna, Ham radio and Ham. Antennas, Towers; If this is your first visit, be sure to check out the FAQ by clicking the link above. The NCC-1 System can be used to peak or null a specific incoming signal. To do that I downloaded the antenna calculation program EZNEC from the internet. This the home page for the ham activities of this oldcyberdude. This is a good time to do it. Optionally this second station is subject to move from time to time, but not as. Antennas, Small Antennas For 160M (DeMaw W1FB), CQ 1996, Feb pg 52 Antennas, Small Motorized Mobile HF Antennas, West (WB6NOA), CQ 2003, May, pg 11 Antennas, So you want to put up a tower…, Lindholm (W1XX), CQ 2008, Jun. The dipole gain (in dBi) as a function of height (in wavelengths) over average ground. Other noise is in the near field, which at HF, can be quite big. We're pleased to offer two "starter" 80 meter antennas. Note: this antenna can withstand quite a bit of power but we have NOT tested it above 150 watts. Up at the loop in the attic, a similar version, the MFJ 918 which has two wires coming out at one end makes it ideal for use up there. 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. If you have an ATU in your rig it will match a fairly wide range of antenna impedances. 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. 3: This five-band loft-mounted antenna has been used at two locations with great results. 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. 160m attic antenna stealth antennas attic amsat antenna working the ham radio satellites with considering a vhf uhf antenna for your home ham radio attic antennas ham. Super-Sloper Antenna 44 69. How to make a loop antenna for 40m and 80m bands I’ve been an addict of full wave (and partial wave) loops since realising many years ago that in comparison to a dipole, you get more bang for your buck if you build a loop – certainly you get more copper in the air – and loops are resonant on EVERY harmonic so a 40m loop will be resonant. Our motorized antennas and stainless steel mounts are designed with the most avid HAM radio operator in mind, as well as commercial applications. Fortify your existing antenna or build your own with high-quality brackets, clamps, tubing and supports from DX Engineering. A simulated test using the N2PK VNA, approximating John's 160m large antenna measurement with a strong AM BC "alien" or "ambient" signal present, yielded the following result: As can be seen, the N2PK VNA is essentially bulletproof up to +10 dBm of ambient signal @ 110 kHz away from the desired signal. This is a good time to do it. 5-30 MHz: SkyWire Dipole Antenna 0. The rig will see 72 ohms at the coax input and an antenna tuner can/will transform this to 52 ohms. 2dbi gain and 20db front to back ratio. A rough drawing is shown below. ON THE RADIATION PATTERN OF THE L-SHAPED WIRE ANTENNA A. The dipole gain (in dBi) as a function of height (in wavelengths) over average ground. com" IN ROOM ANTENNAS! In those cases where you can't put an antenna outside or up in the attic, then you can install it in the same room with the radio!. COVER SHEET ALPHA DELTA MULTI-BAND DIPOLES Models DX-CC, DX-DD, DX-EE, DX-LB, DX-LB Plus Power ratings, MAX output (Assuming SWR at the FEED POINT, not tuner, is 2:1 or less). Attic and Stealth Antennas. 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. Verticals & Inverted L antennas. Full band coverage can be accomplished with an antenna tuner. If you have an ATU in your rig it will match a fairly wide range of antenna impedances. A copper pipe J-Pole, a Discone antenna, and a Cushcraft boomer 13B-2 2 meter antenna. Optionally this second station is subject to move from time to time, but not as. 7 MHz) and 10M (28. 22 Different Wire Antennas. Went to calling after 20 minutes or so and things picked up a bit. The advantages: 1. A simulated test using the N2PK VNA, approximating John's 160m large antenna measurement with a strong AM BC "alien" or "ambient" signal present, yielded the following result: As can be seen, the N2PK VNA is essentially bulletproof up to +10 dBm of ambient signal @ 110 kHz away from the desired signal. It’s often easier to get the main radiating part of the antenna (the centre of the half-wave) higher than it would be for a doublet or dipole as there is no feeder to support. These antennas can be mounted horizontally, vertically or as a sloper. The G5RV antennas we carry are Made in the USA and are built to last. "Running it with an earth wire to a stake and a counterpoise my field strength meter shows that it isn’t too bad though. The combination can work on any band from 160m up to 10m. The DX Vertical is our non-stealth HF vertical antenna. So far this antenna seems to be a winner!. The outer 160m loop is 8 feet on each wooden cross element - making the circumference about 22 feet. The range of these antennas starts at 30 megahertz with a maximum potential for 300 megahertz.