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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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ANTENNA sa AM RADIO ANTENNA sa ANTENNA -- 2 METER sa ANTENNA -- 6 METER sa ANTENNA -- 10 METER sa ANTENNA -- 15 METER sa ANTENNA -- 20 METER sa ANTENNA -- 40 METER sa ANTENNA -- 75 METER sa ANTENNA -- 80 METER sa ANTENNA -- 160 METER sa ANTENNA AMPLIFIER sa ANTENNA ANALYZER sa ANTENNA FEEDER sa ANTENNA GROUNDING sa ANTENNA MOUNT sa ANTENNA ROTATOR sa ANTENNA SWITCH sa ANTENNA TUNER sa AVIATION RADIO ANTENNA sa CB RADIO ANTENNA sa FM RADIO ANTENNA sa LOW FREQUENCY RADIO ANTENNA sa MARINE RADIO ANTENNA sa MOBILE RADIO ANTENNA sa PACKET RADIO ANTENNA sa RADIO SCANNER ANTENNA sa SATELLITE RADIO ANTENNA sa SATELLITE TELEVISION ANTENNA sa STANDING-WAVE RATIO METER sa TELEVISION ANTENNA x AERIAL x AMATEUR RADIO ANTENNA x RADIO ANTENNA x SHORTWAVE RADIO ANTENNA xx ELECTRONICS xx RADIO How to add a headphone system to a stereo. Also, how to hook into a television antenna to improve radio reception of your stereo set. Diagram of a 6 meter ground plane and 6 meter beam antenna. A "pipe organ" multiband vertical antenna covers the 10, 15, 20, 40 and 75 meter bands. How to design and build large quad antennas. Diagram of a modified loop antenna for use on 40 and 80 meters. Diagram of a compact 40-20 meter loop antenna. Diagram of 80-40 meter sloper antenna wires connected to a 34-ft tower. Antenna design and construction guidelines for the UHF/VHF amateur bands. Emphasis is on small and simple yagi units. A switchable Quad antenna for 20 meters features four half-loops joined at the top. Pairs of half-loops are used to form the full-wave loops which function either as radiator or as driven reflectors. A portable, take-apart two-meter yagi (4x4 array) is made from easily boltable members of wood and standard TV mast sections. Has a power gain of 20 and is direct fed. A multi-mode beam for CB and 10 meters with an option for 2 meters. A novel tri-band log periodic yagi design. Three designs for ground plane antennas for 40 and 80 meters. Plans for a low-profile quad antenna for 10, 15 and 20 meters. An improved version of a 3 bander described in the Dec 1976 issue. Design for a wideband 80 meter sloper antenna. Diagram & dimensions for a quad loop feed antenna system featured in a Japanese magazine. It looks like a version of the 80 meter coaxial dipole design. Diagram of a zigzag sloper antenna for 40 and 15 meters. Diagram for a simple 40 meter vertical beam antenna using a folded unipole and three sloper reflectors. Diagram for a pair of Bi-Square loops with dimensions for a 10 meter antenna. A relay selects which one of the pair to activate. Diagram for an all-band (10-160 meters) antenna which uses a 4-BTV vertical with traps using B&W inductors. Build this 160 meter vertical antenna which rises some 56 feet above the roof level. Build a two-band vertical monpole antenna covering 40 and 75 meters. Complete construction details for a 4 bay stacked 432 MHz beam antenna for restricted coverage areas. Diagram of an 80 meter sloper antenna hung from a 72 foot tower. Modify your present yagi beam antenna to cover entire bands, such as 220 and 420, with a single beam. Diagram for (1) multiple inverted-v antenna for 80 meters and (2) driven element of a multi-band monster QUAD which covers 10,15,20, and 40 meters. How to design v.h.f. and u.h.f. antenna arrays using techniques developed for the lower frequencies, namely the "long wire" family of antennas. An inexpensive feedthrough system for antenna cables. A length of plastic pipe and two elbows will conduct cables through a wall. Twenty five years of antenna wisdom. Part 1. Glossary of antenna terms and concepts. Repeater-working antennas for the amateur in rural areas. Two styles shown (1-1/4 and 3/4 meters). Twenty five years of antenna wisdom. Part 2. Glossary of antenna terms and concepts. Spark-gap arrestor can limit static build-up and offer protection from lightning strikes on amateur radio antennas. A delta beam antenna for 20 meters. Twenty five years of antenna wisdom. Part 3. High S.W.R. protection for transceivers and amplifiers. This system allows a transceiver to be used with any antenna (or no antenna) without damage to the radio. A high gain horn antenna for 220 and 420 MHz. A discone antenna for 10 and 6 meters and lo-band public service monitoring. Twenty five years of antenna wisdom. Part 4. The dipole antenna. Part 1. Elementary dipoles. A stacked log periodic yagi for six meters. The 80 meter pyramid antenna requires less room than an 80 meter beam. The dipole antenna. Part 2. Some major dipole variations including the T2FD (terminated tilted folded dipole). A three band array for 144, 220, and 432 MHz. H.F. vertical antennas. Part 1. The simpler forms. The ultra-yagi. A basic yagi design that can be scaled for 1-1/4, 2, 6, and 10 meters. Uses a diagonal reflector system. Description of just how an antenna works. H.F. vertical antennas. Part 2. Popular variations on basic vertical designs. A log periodic antenna for all v.h.f. and u.h.f. bands. Will work from 48 MHz to 148 MHz and harmonically operate on 220 and 420 also. H.F. vertical antennas. Part 3. Trap verticals. Center mounting an antenna on a mobile home. Uses a farmers harrowing disk for the vertical mounting base. A multi-band, multi-purpose helix antenna. More on dipoles: Multiband antennas with tuned feeders. Make a dipole antenna from a "Slinky" toy (metal version, not plastic). Updated version of two off-center-fed Hertz or Windom antennas from the 1930s and 1940s. Multiband antennas: The trap dipole. Part 1. How it works. Multiband antennas: The trap dipole. Part 2. Installing and adjusting. Diagram show how best to orient your yagi antenna during high winds. Long-wire antennas. Part 1. Popular long-wire types. The Yagi antenna. Why it is so popular with amateurs and what it will do. Build a helical quad antenna for 3/4 meters, UHF public service and UHF television. Long-wire antennas. Part 2. Feeding and matching the long-wire. A three-band "ice cream hole" vertical antenna for 10, 15, and 20 meters. Improving antenna performance. Some sound and easy to understand advice. Antennas for the listener. Part 1. What to use for shortwave receiving. Looks at randomwire, dipoles, and verticals. The HR-5 5 band antenna. A rotary element for 14, 18, 21, 24, 28 MHz. Modifying and improving the Gotham Tri-Band quad antenna. A budget-wise forty meter vertical antenna uses a horizontal plastic covered steel clothesline as the ground plane. The clothesline is still used to hang out the wash. Build a portable, steerable high gain rhombic antenna for 432 MHz. Primer of lightning protection. How to protect your ham antenna and gear from a lightning strike. Antennas for the listener. Part 2. Tuneup aids for the shortwave antenna. The "J" antenna. Some sound advice and long experience on this simple 2-meter antenna. Build a two meter antenna for 89 cents. The frugal fifteen. An outstanding 15 meter antenna that's cheap. Est. cost: $15. A primer: The cubical quad antenna. Part 1. More on antennas for the shortwave listener. A primer: The cubical quad antenna. Part 2. Picking the right quad for the job. Computer program (written in BASIC) will determine the specifications for a loaded dipole antenna. How to string Vee-beam and rhombic "long wire" antennas. Three experimental antennas for 15 meters. (1) A half-wave square loop. (2) 3-element beam. (3) 5-element beam. Antenna accessories for the hamshack. Part 4. R.F. switch and lightening protective devices. The 30 meter band. How to modify some currently available gear for 30 meters, plus antenna hints for getting the signal out. Antenna accessories for the hamshack. Part 5. R.F.I. meter and field strength meter. Antenna accessories for the hamshack. Part 6. (1) Antenna noise bridge. (2) Grid-dip oscillator. Make a cover for an antenna coil from a 2-liter plastic soda bottle. The HR-52 antenna. A 5-band 2-element beam for 14, 18, 21, 24.5 and 28 MHz. A penny-pinching 10 meter apartment antenna. 10 meter half-wave dipole does not require loading coils. Est. cost: $10. A 160 meter vertical antenna that can be raised and lowered by one person. Made from a 20-ft. piece of 2" diameter irrigation pipe and a short piece of PVC pipe. Chart for determining counterpoise lengths for 160 meter vertical antennas based on the formula 240/f(MHz). Antenna accessories for the ham shack. Part 7. R.F. signal generator, frequency counter, absorption wavemeter, frequency meter, and Lecher wires. Simple do-it-yourself antennas for 10, 15, & 20 meters. 5-band Windom antenna will work only on "even" harmonics. 80-meter antenna for a mobile home effectively uses the roof of the mobile home as part of the antenna. Also works on 20, 15, and 10 meters. Dipole antennas. Part 1. A series written for the newcomer to amateur radio. Dipole antennas. Part 2. Double-bazooka (coaxial dipole) antenna is based on a single-band coaxial design. Folded dipole antenna is a very simple approach to increasing bandwidth in single-band operation on the lower bands (80 meters). Dipole antennas. Part 3. The open-sleeve antenna. Development of a dipole and monopole open-sleeve for h.f. and v.h.f. amateur applications. Parallel verticals. A broadband antenna covering six bands (80, 40, 30, 20, 15, 10) without traps. Antenna is 25-ft. tall. Development and construction of "V" beam antennas. Build a 2 meter J-pole antenna from copper plumbing fittings. Est. cost: $4. Writing amateur radio antenna design programs in BASIC for your personal computer. An unconventional sloping "L" antenna for 160 meters. Antenna ideas for 30 meters. (1) simple dipole. (2) quarter-wave vertical. Development of a triband (160, 80, 40 meter) quarter-wave sloper antenna. Dimensions for four different styles of 30 meter antennas. The turnstyler. A circular, polarized, portable, self-supporting array for 2 meters. The evolution of the four-element, double-driven quad antenna for 20, 15 and 10 meters. Mobile home antenna utilizes the aluminum sheeting covering the edges and undersides of the eaves. Construction design program written in BASIC for a two-element Quad amateur radio antenna. An antenna system to remember. Part 1. One man's "ultimate" antenna system took 20 years to plan. Modified Windom antenna for 15 meters. 2-meter "shirt-pocket" J-pole antenna is made from 54" of TV twin lead. An antenna system to remember. Part 2. Conclusion. Using a 15 ton crane to erect the mast. Five-element beam antenna for 2-meters. A 3.5 to 30 MHz discage antenna. Includes a circuit for an 80-, 160-meter bandswitching antenna matcher. Improving vertical antenna efficiency. A study of radial wire ground systems. Traveling-wave antennas. Some basic information. The grounded half-quad loop. An all-band antenna small enough to fit on a city lot. The "Zimbeam". How to construct and use phased-beam antennas. Designing a two-band loaded vertical antenna. Includes a computer program written in BASIC. How to build a quick and easy 15 meter QRP mobile antenna. Tip: How to utilize a string and helium-filled balloons to get an antenna wire to the top of a tall tree. The preparation and use of bamboo poles for quads. How to reinforce bamboo poles with fiberglass gauze drywall tape and epoxy resin. The "hidden" apartment antenna. Simple circuit for a four-band (40, 20, 15, and 10 meter) tabletop antenna only 28" tall. How to build a cheap and easy r.f. noise bridge. It is used to measure the impedance of an antenna. A cheap, easy-to-build 10 meter beam antenna is made from PVC water pipe and antenna wire. Computer program in BASIC calculates the exact positon of the moon. Gives azimuth and elevation coordinates, Greenwich hour angle, declination, and right ascension. Useful for aiming radio antennas for signal bouncing. A flexible tape antenna for 2 meter handhelds. Made from a 19" length of steel tape measure. An automatic antenna selector for the Kenwood TS-430S. Est. cost: $30. Includes tips on applying the same technique to other rigs. Exploring the vagaries of traps. Looks at parallel resonate circuits as they are used in multiband antennas. Dissecting loop antennas to find out what makes them work. How to design a real estate efficient antenna farm. Part 1. Planning and tower considerations. Details for constructing a coaxial inverted "L" antenna for 160 meters. The sky plane antenna. Make a single-element "Bobtail Curtain" antenna for omnidirectional propagation. How to design a real estate efficient antenna farm. Part 2. Installation. How to adjust antennas. A simple hands-on method is described. Three designs of windom antennas are illustrated. (1) 130 ft. 6-band windom. (2) 130 ft. paralleled windom for coverage of a wide variety of h.f. frequency bands. (3) 5-band BBBC windom for 40, 30, 20, 15, and 10 meters. How to build a three element 2 meter quad antenna. How to build cheap and easy 2 meter antennas. Vertical antenna grounding systems. Very simple and inexpensive multiband dipole antenna is 102 ft. overall length fed with a 33 ft. length of open wire line or a 29 ft. length of twin lead. A horizontal loop antenna for 40 meters. Homebrewing antennas from commonly available copper and brass stock. Inverted "L" antenna for 160 meters. Scaling the coaxial double bazooka antenna for 30 meter operation. Inexpensive G5RV multiband dipole antenna for 80, 40, 30, 20, 15, and 10 meters. How to convert a citizens band antenna to 2 meters. Basic dimensions for a centerfed Zepp, a dipole multiband antenna. A description of three HF vertical antennas of the "cheap and dirty" variety. An introduction to the loop antenna. How to build a 80 and 30 meter trapped dipole antenna. The Minipoise antenna system, a small but efficient low frequency antenna. Includes construction data for 40, 80, and 160 meter versions. The tilted terminated folded dipole (T2FD) antenna revisited. Covers all high frequency bands with a SWR of 1:2 or less. Essential construction details of a practical Beverage antenna. Layout and dimensions for two basic "quick and easy" 12 meter antennas. More information on the G5RV multiband dipole antenna covering the 80-10 meter range. A back-to-back J-stub antenna. Covers the 15, 20, 40, and 80 meter bands. Unorthodox piggyback inverted Vee antenna for 160 meters. Diagram for a full-wave delta loop antenna used to good effect on 40 meters. One method for measuring antenna gain. Requires two identical antennas. An antenna length chart. Chart gives the length of antenna needed for various frequencies. How to build a shortened vertical for 20 and 30 meters. Height of the radiator is less than 10 feet. Est. cost: $50. A loop array antenna for 160 meters. Direction-finder program for the Commodore C-64 computer. Program determines which way to point a beam-style radio antenna to get your signal into a specific location. Written in BASIC. Modeling radiation patterns from vertical dipoles using the "Cushcraft R3" antenna. Multiband antenna system utilizes the G5RV antenna design. How to construct four stacked TH7DX antennas on one 145-ft. self-rotating tower. A short vertical antenna for 160 and 80 meters. Hints on the use of coaxial cable to feed an antenna system. Build a high-performance, extended bandwidth, shunt fed, 160 meter vertical. Novice antenna hangups. Common problems facing new amateurs in the mystical world of antennas. Converting a CB antenna for 12 meter mobile use. The "U" antenna. A high-performance DX receiver antenna for 80 and 160 meters. How to build a simple "J" antenna for 2 meters. Built from 1/2" copper water pipe. More information on the extended double Zepp antenna. Variation on a theme by Marconi. How to construct and use an inverted-L 160 meter Marconi antenna. HF mini-dipole antenna uses two mobile whip antennas. Can be easily disasembled for use while traveling. Accepts either 40 or 20 meter whips. Tip on a "hybridized" G5RV dipole with a 98 ft. flattop that is better suited for a small yard. Getting started in amateur radio. Part 5. Antennas. More information on the G5RV antenna from the antenna's inventor, Louis Varney. The simple, cheap all-band antenna. A 1/4-wave vertical ground antenna with clip-on extensions to cover any bands you want. An easy-to-build all-band vertical antenna. A driven, phased array that needs no radials. Reconfiguring a 402-BA into a 2-element 30 meter beam antenna. Build a high-gain portable antenna for VHF/UHF operation. New twist for the high-frequency J-pole antenna. Includes a BASIC computer program to compute the dimensions for any frequency in MHz. How to modify a citizens-band beam antenna for use on the 10-meter novice band. Methods for building really-cheap antennas. The 40-meter flame thrower. A monster antenna that's guaranteed to activate your imagination. Some thoughts on 160 meter receiving antennas for city lots. Designing an antenna by the seat of your pants. Tips on creative thinking and experimentation in the construction of simple wire antennas. Using 75 ohm CATV cable coax for amateur antennas. Circular polarity with linear antennas. What causes improper polarization and what you can do about it. Long-wire antennas. Part 1. Random/long-wire antenna design and installation. Wire antennas and trees. Use a sling shot to shoot a monofilament line through a tree, which in turn is used to help string a radio antenna wire from tree-to-tree. Long-wire antennas. Part 2. Length, directivity, tuning, etc. Tips on correct leadin wires to use with a "classic" G5RV antenna. Some good "hands on" suggestions to get you started with trapped vertical antennas. Two really cheap antenna projects suitable for use with travel trailers. Simple wooden base is used to convert a mobile mast (vertical antenna) into a portable antenna system. Portable antennas for summer fun. (1) Break-down rotary dipole. (2) Kite long-wire. (3) Roll-up coax dipole. Problems and notes on the G5RV multiband antenna. Convert a rugged plastic carrying case (originally used for a soldering gun) to carry a 2-meter handheld radio and accessories. The case also incorporates a ground plane and telescoping whip antenna to improve transmit range. A broomhandle wire-type beam antenna for 10 meters. Crazy antennas I have used. Describes a 2-meter coat hanger antenna, a 40-meter dipole taped to the ceiling, an underground antenna, etc. Added information on the G5RV multiband antenna popularized by Louis Varney. Discussion of the Extended Double Zepp (EDZ) antenna and the "Modified Windom" antenna. Hints for constructing and using kite-supported radio antennas. Build a 160 meter top-loaded vertical antenna suitable for an average-size city lot. Portable antenna for 24, 40, 80, and 160 meters. A collapsible 20-ft. mast supports a four-band sloper antenna system. DEZI (double extended Zepp inverted) dipole antenna for 10 meters is based on a classic 1930s antenna design. A simple wire vertical antenna for 40 meters is suspended from the branch of a tall tree. Antennas. Part 1. A simple introduction to antennas for new amateurs and potential amateurs. Primer on the use of coaxial cable as a tuned transmission line for amateur radio antennas. The perfect cube. An easy-to-build three-element quad antenna is built from scratch using readily available, inexpensive materials and simple tools. The search for the perfect low-band receiving antenna. A 176-ft. length of coax wire is mounted on a roof using wooden clothes pins to form a loop antenna. The delta loop. A classic DX antenna for 10 meters that provides excellent bandwidth and even a bit of gain. Antennas. Part 2. A simple introduction to antennas for new amateurs and potential amateurs. Tips on HF antennas which will minimally disturb the appearance of an apartment building, condo or other structure with restrictions against amateur radio antennas. Tip on selection of coax cable for feeding multiband antennas. Cutting your losses. Replace your antenna transmission line with low-loss aluminum coaxial cable available from your local cable TV company. Antennas and digital RF communications. A look at the specifics related to various types of antennas and their applications to packet and other digital modes. One-element rotary antennas for 28, 25, or 21 MHz are easy to build with simple tools. Low-band vertical array. How to modify a sloping dipole to make an effective contest antenna for 80m 75, 40, and 20 meters. Sampling of wire antenna designs used in connection with a portable "suitcase station". Build a Yagi beam antenna from copper plumbing pipe and fittings for use in the VHF/UHF range. Est. cost: $20. Basic antenna information. Antennas you can build and helpful hints on improving your station. Part 1. Reactance and impedance. Basic antenna information. Part 2. Actual antenna systems. Low-band verticals and how to feed them. Use a relatively short tower (50-to-70-ft. tall) to handle 10, 15, 20, 40, 80, and 160-meters without a lot of separate wire antennas. HF attic antennas. Tips on installation and adjustments. The N4PC loop antenna. Modifying a horizontal loop antenna to produce low-angle radiation on 80 and 40 meters and still maintain excellent DX characteristics on 20 through 10 meters. The end-fed long wire antenna. A close look at a practical single-wire antenna for coverage of all bands between 160 and 10 meters. V-beam antenna, a simple and cheap wire antenna originally known as the RCA Model D antenna. G5RV multiband antenna, a simple sky wire. The W4FA fast antenna. A very simple low-cost wire antenna that can be used for all-band HF operation. Can be erected quickly and will handle power outputs of from 100 to 1500 watts over the 80 to 10 meter range. (1) Catenary double-quad loop antenna for 40 meters. (2) Multiband HF antenna and a matching box for changing between 80 meters and the HF bands. (3) Half-length sloper for 80, 40, 30, and 20 meters. Obtaining noninductive power resistors for the T2FD (terminated tilted folded dipole) antenna. Let's talk antennas. How to tell a good antenna system from a bad one. Part 1. Basic criteria governing all antennas. Let's talk antennas. Part 2. Multiband beams and wire antennas. Let's talk antennas. Part 3. Rotatable dipole, inverted-vee antenna, grounding, etc. A 50 ohm quad loop antenna. Dimensions for 10, 12, 15, and 20 meter band. Ham radio safety tips for antenna installation and electric power. Basic plan for the extended Lazy H antenna. Produces four lobes on 17 meters and can be used on the other bands (80, 40, 30, 20, 15, 12 and 10 meters) as well. The irrigator's special. Construct a free-standing, collapsible vertical antenna from PVC pipe and wire which does not require a tuner. Operates on 20, 30, or 40 meters. The McCoy dipole antenna which can be many lengths. How to take the guesswork out of building a helically wound HF vertical antenna. Constructing and erecting a vertical zigzag wire broadband antenna. A two-band (12 and 17 meter) half-square wire antenna with coaxial feed. The G5RV antenna. Results of experiments in using and improving this sky wire design. Build a single-wire off-center-fed Windom multiband dipole antenna. Part 1. Build a single-wire off-center-fed Windom multiband dipole antenna. Part 2. Multiband wire antennas. (1) 7 and 21 MHz dipole. (2) Trap-dipole configuration. Buying an antenna. A primer to help select one which satisfies the needs of the amateur radio operator. Yagis versus quads, log periodics, and others. A comparison of rotary directional antennas. Part 1. Yagis versus quads, log periodics, and others. A comparison of rotary directional antennas. Part 2. A lightweight 2-element Yagi antenna for 18 MHz (17 meters). Some answers to common antenna questions. (1) The "best" feed line. (2) Baluns. (3) Top band antennas. (4) Physically shortened antennas. (5) Ground radials. Ground-plane loop antenna features capacitive feed, inductive feed or gamma feed. Can be tuned to cover a 2-to-1 frequency range. Classic antennas for classic rigs. (1) All-band Gotham vertical. It works similar to an oversize mobile antenna, so any large self-wound and tapped coil can be used. (2) El-Toro open-wire antenna uses a "ladder-line" radiator that can be installed vertically, sloping, or bent to fit available space. A compact, four-band (40, 20, 15, 10 meter) quad array. An off-center-fed dipole antenna. A simple half-wave dipole antenna can be modified into a 4-band antenna. An analysis of the basic log-periodic dipole array (LPDA). Includes dimensions for a small LPDA antenna for 18-28 MHz built on a 12-ft. boom. The N4PC Bi-Delta antenna is easy to build, is efficient, uses wire, and covers three bands (20, 30, 40 meters). Assembly outline of full-wave Delta Loop antenna which can be made for any band from 160 to 10 meters. Acid rain and your antenna. How to reduce the "wet antenna syndrome" which causes a change in the tuner settings of wire antennas. How to perform an analysis of rain water and make a "raincoat" for end insulators from 2-liter plastic bottles. An open-sleeve dipole antenna for 10, 18, and 24 MHz Five-band antenna farm for a small lot handles 7, 14 and 21 MHz, 10 meter and 80 meter. The Lazy H antenna. Construct an antenna which consists of two dipoles in a properly phased array. Handles all bands from 40 through 10 meters. Oversize slingshot (for erecting treetop wire antennas) is attached to a stepladder. A DX antenna for 160, 80, 40, and 30 meters consists of a 45-ft. vertical radiator, special trap, 70-ft. straight wire top, and a ground system of sixteen 80-ft. radials buried in the ground. How to build three omnidirectional antennas for 440 MHz from PVC pipe and 300 ohm twin-lead. (1) J-pole. (2) Two-element end-fed collinear. (3) Four-element collinear. A simple multiband antenna array for 7, 10, 14, 18, and 21 MHz is based on the Lazy-V dipole. Construct the H double-bay wire antenna. How to add a rotatable 17- and 12-meter trap dipole to your antenna farm. Est. cost: $100. Summertime antenna installation. Safety ideas to help alleviate or eliminate some of the dangers of working on antennas. Basics of the Zepp (Zepplin) antenna and tips on building one. The WEETENNA. An electrically shortened multi-band dipole antenna to fit whatever space is available. A "poor man's" method for simple antenna pattern measurements. Quad versus Yagi. Observations and notes comparing the pros and cons of these two antennas. The full-wave loop sky-wire antenna. Specifications given for constructing a 3.5-28 MHz loop and a 7-28 MHz loop. Antenna efficiency. Tips on improving the ratio of power input to power output in your antenna system. Tips on stringing antenna wire in, over, and around treetops using bow-and-arrow, slingshot, kite, etc. Tip on converting an all-metal attic ridge vent into an invisible center-fed antenna. Narrowing the debate. A brief look at replication requirements for building Yagi and Quad antennas. How to build a super slinky stealth antenna. Transforming wire-reinforced flexible clothes dryer venting and 2 metal trash can covers into a concealed attic antenna. The J-pole antenna. A roll-it-up, stuff-it-in-your-pocket, portable alternative to the rubber ducky antenna found on handheld transceivers. QRP antenna cheapware. Small QRP antenna is built from a plastic 35mm film container, button, wire, capacitor, and inductor. Other uses for 35mm film containers include a low-power balun, dipole antenna center support, and open wire spreaders. The J-pole revisited. Design and construction parameters. How computer tweaking can make it more efficient. Another look at the G5RV antenna. A five-band (20, 17, 15, 12, 10 meters) cubical quad for Cycle 23. Uses a simple feed system, avoids use of complicated matching networks, can be constructed by one person, and does not require continued maintenance. How to build an effective all-band counterpoise (ground grid) for a vertical antenna. A closer look at the extended double Zepp antenna. Designing an affordable, available-space antenna. Trap dipoles for dummies. The secrets of trap dipole antenna design revealed in plain language. Some practical ideas about stacking HF yagi antennas. Topics covered include wave angle control, antenna spacing, feedlines, etc. Phased quarter-wave sloper (PQWS) makes a good DX antenna. Practical application of YAGINEC. A computer modeling program helps explain why some single-band yagi's function better than others. Looks at 3, 4, 5 and 6-element designs. Phasing antennas. How to combine two of almost any type of amateur radio antenna. Is horizontal polarization always the best? The results of using "MiniNEC" computer software to compare vertically polarized antennas with horizontal ones. Determining the correct height for horizontally polarized antennas using computer modeling. Low-band tri-bander. A very simple vertically polarized antenna system for 40-160 meters that is limited to the space confines of the tower and HF yagi, yet produces good results on the low bands. Built from readily available materials. In search of the ultimate antenna. Selecting, assembling and fine-tuning a multi-band antenna. Part 1. The selection process. In search of the ultimate antenna. Part 2. Assembly, erection, and initial testing. In search of the ultimate antenna. Part 3. Final tuning to improve resonate points and SWR curves. Compact-loop antennas. Some practical advice on building and tuning. Build an active shortwave antenna (consisting of a very short antenna and a high-gain amplifier) to use in place of a long-wire receiving antenna. Est. cost: $15 (kit). Choosing the right shortwave receiving antenna. Low-cost and effective window-mount vertical antenna (helix antenna) is made from insulated hook-up wire and PVC pipe. Inverted V antenna is a modified version of the half-wave dipole. AM/FM/SW active antenna includes a FET amplifier to boost the signal with almost no load felt by the antenna. Wire beams. How to design and construct a wire antenna. Looks at half-wavelength dipole, Yagi beam, double-extended Zepp, Collinear Franklin array, Lazy-H, and ZL-Special antennas. A quick and dirty quad antenna for CB or 10- and 12-meter ham bands. Requires no ground plane, puts out twice the signal, and is directional. Est. cost: $15. AA-7 active antenna is used to amplify the signals from 3 to 3000 MHz, which includes shortwave, ham, government, and commercial radio signals. Est. cost: $25. Fine wire antenna. What SWR means to you. Choosing the right transmisson line. Ham antenna facts. Simple mainmast for 80-, 40- and 15-meters. Antenna analyzer meter helps tune antenna. Spark plug lightning arrester for an antenna. Two antennas can be better than one. All-band SWL antenna. Attic antenna for shortwave receiver acts as a signal building half-wave dipole or conventional long-wire antenna at the flip of a switch. Constructed of 300-ohm TV twin lead. A mini verical for SWL's. An 8-ft. vertical antenna that can be made resonant on any frequency in the shortwave bands. A tuning unit electrically makes the antenna 1/4 wavelength long at any shortwave frequency. Quarter-wave ground plane antenna for 6- and 2-meter ham bands. Multi-dipole SWL antenna covers all shortwave bands from 6- to 80-meters. Three-element beam antenna for 10 meters. Est. cost: $10. Inverted-V antenna for 15-, 40- and 80-meter ham bands. Antennas are a half-wavelength long. Vee-Quad antenna designs for 20-, 15- and 10-meters or citizens band. Four-band ham antenna tunes 80-, 40-, 20-, and 10-meters. Low cost antenna uses only 140 feet of copper wire and TV twin lead. A 6- and 2-meter ham antenna built of wood dowels, aluminum tubing and wire. Est. cost: $3. Remotely-tuned SWL and ham antenna. Three-element ham yagi antenna with total tuning for the 20, 15 and 10 meters plus citizens band. Vertical general-purpose antenna for 10-, 15-, and 20-meter bands and CB. Approximately 11-ft. tall. Five-band ham antenna with remote coil switching covers 10-, 15-, 20-, 40-, or 80-meter bands. A 2-meter five-element beam antenna. Est. cost: $2. A trap antenna for SWLs operates from 3 to 30 mc with an impedance of nearly 50 ohms throughout this range. Sloping-vee antenna for shortwave receiver or ham rig will improve transmission and reception at low cost. The J-pole antenna. Build this simple, portable 3/4-meter band (440 to 450 MHz) antenna. Tunable shortwave antenna to improve reception. UHF corner-reflector antenna. Obtain outstanding performance from a home-brew radiator built from readily-available parts and materials. Connect a dipole antenna to an end-feed antenna receiver or to a receiver with only one antenna terminal and one ground terminal. Diagram included. Rotatable broadcast band loop antenna is useful when DXing the BC band. Antenna systems for SWLs. Several styles of shortwave antennas plus a simple SWL antenna tuner. How to install a trap vertical antenna. It is an "all band" hf antenna with enough room for 160, 80, 40 meters, 80 through 10 meters, or 40 through 10 meters, or full novice coverage starting at 80 meters. Est. cost: $80. Three simple antenna installations for those just getting into the shortwave listening hobby (SWL). Convert a child's "Slinky" toy, a tin can and a fishing reel into a shortwave end-fed helically-wound long-wire antenna. The antenna hangs out a window and may be cranked up and stored when not needed. Est. cost: $10. Multiband SWL antenna system built from 300-ohm TV twin lead and some coax cable. Covers 8 bands (49, 41, 31, 25, 19, 16, 13, and 11 meters). Est. cost: $20. A discussion of long-wire antennas and vertical antennas for the novice ham. Getting your "BNEE". Third semester. How to match your new novice transmitter to your antenna and get your station on the air. Elementary Electronics basic course in electricity & electronics. Understanding dipoles. Directional antennas for the shortwave listener. What is available commercially and what can be built. BASIC computer program to aid in the alignment of a radio or television antenna using the geographic coordinates of the antenna and the transmission tower. Tips on constructing dipole antennas for all radio bands 6 through 160 meters. Includes mast construction which uses plastic plumbing pipe. Add a directional loop antenna to your CB or ham rig. Use it to locate a source of interference or to locate the position of a transmitter. Design tips for 15/40 dipole antennas which feature PVC piping mount structure. Three-section PVC mast and inverted long-wire antenna for 20 meters. All you need to know about erecting a back-yard helical 40-meter vertical antenna. Fabricate a multi-band (10-, 15- and 20-meter) umbrella dipole antenna. Flexo SWL Aerial. An antenna/antenna-switching system than improves shortwave reception by adding flexibility to a single-antenna system, making it seem as if you have more than one antenna. Gives you more choices in antenna length, angle-of-signal arrival, and propagation conditions. Specifications for fabricating shortened HF dipole antennas. Phasing vertical antennas. How the user of an omnidirectional vertical antenna can get the benefit of directivity. If the antenna doesn't fit, use a limited-space design. A look at verticals, scrunched dipoles, long- and short-wire antennas, and a directional limited-space antenna. Indoor aluminum foil antennas for FM, TV, and shortwave. Installing store-bought trap verticals. Some tips. Active antenna for better DX'ing. Build an active loop antenna to dramatically improve reception on longwave, broadcast and amateur-shortwave bands. Est. cost: $69. Make long-wire antennas really work using some old techniques. Resurrecting the old fashioned dipole antenna as a low-cost alternative to a tri-band beam. Five classic antennas for radio listening setups. Looks at the random-length antenna, half-wave dipole, quarter-wave vertical, loop antennas and active antennas. Multi-band wire antennas. Looks at trap dipoles, tuned-feeder, the G5RV multi-band dipole, and parallel transmission line. Antennas for getting on the 10-meter band. (1) Adapt a CB ground-plane antenna. (2) Build a rotatable dipole from aluminum pipe. How to build your own dipole antenna for any international broadcaster, ham, CB or other frequency. Wire lengths for 11, 13, 16, 19, 25, 31, 41, 49 and 60-meter bands are given. Basic introduction to antennas, how to determine the length of an antenna and typical hookups for dipole, inverted-L, slant long-wire and vertical long-wire antennas. UHF corner reflector antenna. Dimensions given for constructing 6 different antennas for handling the 3 amateur and 3 commercial bands in the range 420-1300 MHz. 80-160 duo-bander operates as a quarter-wave end-fed antenna. A 5-ft. mast driven into the earth serves as a simple ground system. Tips on replacing the little rubber antennas on handheld 2-way radios with a telescopic whip or an external antenna. Ground-level fed long wires for SWB listening. DX'ing the high-frequency SWB bands using indoor antennas. Single-wire indoor antennas for 11, 13, 16, 19, 21, 25, and 31 meter bands. Modify a 4-ft. helical loaded mobile CB antenna to operate between 33.90 and 162.55 MHz. More about indoor wire antennas for MW/LW and SW tuners. Tips on using metal framed windows and doors as antennas. Indoor full-wave quad loop antenna installation ideas. Simple antennas for the daytime DX bands. Both indoor and outdoor designs shown. WARC dipole antenna and multiband (10-15-20-40-80 meter) short dipole antenna both use resonator coils. Tips on using a wideband pre-amplifier to improve LW, MV and SWL reception with an indoor antenna. Adapting the Grove ANT-6 indoor antenna for both scanner and SWL use. EPI (Electronic Processing, Inc.) wideband active antenna. A user test of this indoor antenna includes techniques for improving reception of the SWB bands by adding some wire to the top of the antenna. Tip on fabricating an 80-ft. indoor horizontal loop antenna. Harmonics and the single-wire antenna. Making and using single wire antennas for the various SWB and ham bands. World band broadcast listening with a portable. Part 2. Tuning tips and antenna. Make an indoor radio receiver dipole antenna from standard phono-cable with a phono-plug attached at one end. String up a hot broadcast band antenna. (1) Long-wire antenna using a coil feedline near the receiver. (2) Beverage wave antenna. Build a DF antenna, a simple receiving antenna with directionality for HF. Use it to null out local interference. Build the TCFTFD dipole (tilted, center-fed, terminated, folded dipole), a high frequency antenna for shortwave listening. Construct a single-turn, low-inductance wide loop antenna to improve reception on small portable shortwave receivers equipped with telescoping whip antennas. Indoor SWL antennas for cave dwellers (residents of apartments, condos and townhouses). (1) Antenna in attic or loft. (2) Flagpole antenna. (3) Fishing pole antenna. (4) Flowerpot antenna. Build the double extended Zepp antenna (a version of the collinear wire antenna) for ham and SWL use. Overcoming SWL "fade" by using diversity reception techniques. An introduction to spatial diversity and polarity diversity antenna systems. Build the room or attic loop shortwave (high-frequency) all-band receiver antenna. A possible solution for apartment and townhouse dwellers. Antenna "radials". What are they and how many do you need? Inverted-L antennas for small lots. Long-wire antennas. Part 1. A description of the classic, non-resonant long-wire antenna and its radiation pattern. Long-wire antennas. Part 2. V-beam and inverted V-beam. Shortwave receiving antenna measurements. Making sense out of a difficult topic. Rhombic antenna for ham radio. How it works, transmission lines, tuner matching, etc. Layout and dimensions for constructing a pair of "Six-Shooter" ham radio antennas. The low-band "Tee-Tenna" is made from 300-ohm twin lead and is related more to the Marconi style than the Hertzian (or dipole). Dimensions are given for 7200, 4750, 5500, 6500, 3750, 1850, and 1000 kHz. Making one dipole antenna work on two bands. Two halo antennas stacked for 2 meters. Mobile or fixed station. Two compact BCB PX antennas include a "loaded" whip antenna and a variable-tuned loop antenna. The essential dimensions of the all-metal, 15-meter "Swiss Quad" directional antenna. Build a 144-mc Swiss Quad antenna; all metal, 2-meter, cubical quad. Using TV input balun coils to put a low power 6- or 2-meter ham transceiver on the air using only an outdoor TV antenna. Build an 80/40 meter bandswitching vertical antenna. Build a "J" style antenna in 30 minutes. Useful for 6- or 2-meters and SWL between 150 and 170 MHz. Simple 40-meter vertical monopole antenna tunes either ham or SWL 41-meter DX bands. Lightweight antenna constructed of 300-ohm twin-lead cable. Can be mounted on an existing tower or on your house. Est. cost: $1. Portable antenna tunes 40-, 80- and 20-meters. Switch for selecting one of three antennas. Five antenna designs for novices, technicians and SWL's. Four-band SWL antenna. Resonant dipoles for 60-, 41-, 19- and 13-meter bands. Broadband dipole antenna for 75/80 meters. Simple Wheatstone bridge and a signal source used to tune SWL antenna system. Lightning protection for a ham radio antenna. Multi-band ham antenna takes up little space. Consists of up to 4 "Hustler" antennas mounted on a single mast. Covers 10-, 15-, 20-, 40-, and/or 80-meters. Seventy foot antenna covers the 80- through 10-meter ham bands. Multi-dipole antenna has low SWR and uses no traps. Antennas for CB'ers and hams. Part 1. Clearing away half truths and superstitions. Antennas for CB'ers and hams. Part 2. Some unusual antenna configurations are discussed. Vertical helix antenna disguised as a flag pole produces good results. Indoor 20-meter ham antenna is only a 6-ft. long coil of wire. How to build a compact 80/40-meter inverted V antenna. Only 10 feet longer than a conventional dipole, but gives good two band coverage. How to properly ground a ham radio antenna and equipment to prevent damage from lightning strikes. A review of various configurations for the one-wavelength loop antenna. The antenna, getting out the signal. Tips on selecting, matching, and coupling the ham antenna. How to determine antenna gain. Tailor a standard TV antenna to provide excellent reception on the vhf/uhf public safety bands. Tip on installing a wave trap to filter out unwanted AM radio signals. A multiband shortwave antenna for SWLs. Transmission-line traps of novel construction allow this antenna to resonate on the 49-,31-, 25-, 19-, 16-, 13- and 11-meter shortwave bands. Est. cost: $30. An introduction to the meaning of "long-wire antennas" and "antenna gain" as used in amateur radio. The Cliff Dwellers SWL (shortwave listening) antenna. Helically wound antenna is made by combining 5-conductor cable with a 7-ft. piece of PVC plastic pipe. Capable of pulling in signals between 150 kHz and 30 MHz. AM/FM/SW active antenna. A one-evening project that will pull in shortwave or AM broadcasts like a magnet. Combines an 18" whip antenna with an FET amplifier to boost the signal. Antenna measurements for hams and SWL's. How to test and tune your antenna without using a transmitter. Getting on 17 meters. How to construct and install a 17-meter band antenna. Keeping your ham radio antenna system in shape. Tips on troubleshooting, grounding, tower safety, etc. Where does my signal go? Understanding antenna-radiation patterns for the basic half-wave-length dipole antenna. How to install a ham or SWL antenna (or antenna mast). Tips on safety, antenna location, materials, supports, etc. A homebrew antenna for the cheapskate. A vertical antenna is assembled from aluminum tubing, wood, wire and rope. Wire antennas for hams and SWL's. (1) Tee. (2) Random-length long-wire. (3) Doublet. (4) Windom. (5) Shortened dipole. Improve lower frequency radio reception with a dual-band, loop-style, amplified-antenna system. Folded dipole antennas for ham radio. Two construction methods shown along with an alternate method of feeding the folded dipole. Design and build loaded dipole antennas. Listing for a BASIC computer program to compute the Great Circle bearing and distance between any two points on Earth. It is used mainly for positioning radio antennas. Wire beam antennas for ham radio. Advice on installing and using the half-wavelength dipole, Yagi, double-extended Zepp, collinear Franklin array, Lazy-H, and ZL Special antennas. Loopstick antennas, their construction and use. Two configurations for terminating long-wire antennas are compared. (1) Traditional ground connection. (2) Radials replacing ground connection. Build an active antenna for a radio receiver or scanner. Amplify from 3 to 3000 MHz which includes shortwave, ham, government, and commercial radio signals. Est. cost: $25 (kit). Loading up a tower. How to utilize a metal antenna tower as a random length, vertically polarized, Marconi antenna. Pipe and tubing antennas. Basic methods used to process aluminum tubing and copper pipes into functioning antenna systems. Wire antennas for ham radio. (1) Thorne array. An upside-down bobtail curtain antenna that is capable of a very low angle of radiation. (2) Large Loop or Bi-Square antenna which is similar to a single-element quad. An all-band delta-loop antenna. Includes a band-changing and matching network. Making and using the DDRR (Directional Discontinuity Ring Radiator) antenna. An adequate performer when space considerations prevent building a larger antenna. A DX beam-aimer (antenna aiming) program. A BASIC language computer program that calculates the true direction and true nautical distance between two points on the face of the globe. Some antenna topics. (1) Making the G5RV multiband ham radio antenna. (2) Antenna reciprocity. (3) Receive vs. transmit antennas. Antenna safety for hams and SWL's. Looks at antenna construction, tower safety, lightning protection, grounding, etc. Limited-space antennas for SWL's. Designs and ideas to help even the most space-challenged shortwave listener. Antenna installation safety tips. Low-frequency antenna ideas. (1) Coaxial-tee antenna. (2) Twin-lead tee antenna. Twin-lead antennas for amateur radio. (1) Marconi antenna. (2) Folded dipole. (3) Wideband folded dipole. (4) Dipole beam. A Sterba curtain array antenna. This exotic is easy to build and suitable for upper HF (above 10 MHz) or lower VHF regions. Other antenna topics examined include antenna gain, coaxial choke, end-fire arrays, broadside arrays, voltage standing-wave ratio (VSWR), and impedance matching. Constructing the basic folded dipole antenna for ham radio. Build a 5/8-wavelength ground-plane (vertical) antenna. Construction details for hanging loop antennas. Build a 100-kHz to 30-MHz active antenna. Est. cost: $20 (kit) plus PVC pipe fittings. Large loop antennas for ham radio. Dimensions given for eight quad loops. Installation of loops and the delta loop antenna are also discussed. Antenna scaling. A method for converting antenna dimensions and element spacing from one frequency to another. The Beverage (or wave) antenna. Constructing one of the best receive antennas available for Very Low Frequency (VLF), AM broadcast band (BCB), medium wave (MW) or Tropical Band (low HF region). Vertical antenna designs from the perspective of their ground systems and standing wave ratio (SWR). Recording the VSWR (voltage standing wave ratio), feed point impedance, and other measurements of ham radio antennas and transmission lines. This will help when troubleshooting. Some odd loop antennas for ham radio. (1) Ring antenna. (2) DDRR (Directional Discontinuity Ring Radiator). (3) Commercial loop. How to erect and use a simple dipole antenna. Quad loop antenna for ham radio. Introduction to a square loop that can be fed on either a horizontal edge (horizontal polarization) or vertical edge (vertical polarization). Design and use of end-fed Zepp antennas for ham radio. Construction and use of the G5RV antenna for ham radio. The random-length wire Vee antenna. Basic layout and modeling results for a 100-ft end-fed Vee antenna. Helical antennas and their application in "RadioScience Observing" (including whistlers, spherics, and radio astronomy). Home-built antenna selector allows shortwave reception on a small transistor portable radio. Also has connection for recorder to allow taping of broadcasts or feeding through an external speaker. A short course in antennas for shortwave listening. Includes a chart of the radio listening spectrum and an examination of various types of antennas. How to restore your old antenna (ham, CB or TV) to like-new operation. Tip: Easy way to make a half-wavelength dipole shortwave antenna. Tips on erecting the Hygain Electronics 50-foot HG-50 MT2 antenna tower and a TH5-DX beam antenna. An indoor shortwave antenna system for use with an all-wave radio receiver. How two or more radios can share the same antenna. Deciphering antenna specifications. Design theory for a multi-band trap-antenna for 10, 15, and 20-meters. Antenna systems. An explanation of VHF antenna phasing networks. Antique radios. Antennas and grounds. Active antenna for shortwave listening that provides between 14- and 20-dB gain over the range of 1-30 MHz. Est. cost: $15. Choosing the right shortwave-listener (SWL) antenna. Looks at making and installing simple long-wire antennas as well as commercial choices. Low-cost, three-band antenna that will fit the average backyard. Designed for 80-, 40- and 15-meters. Measures 100 ft. long. Zippy signal grabber. Use house electrical wiring as a giant antenna to receive any signal, from broadcast band through TV. A dual purpose dipole antenna can be used for either the 80-meter or 40-meter band, with an antenna that occupies only slightly more space than a 40-meter antenna. Simple, low-cost way to put up a single-band ham antenna. | |||||||||
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