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Antenna theory, basics,design antenna

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      • Antenna basics - Basics by From Ian C. Purdie, VK2TIP
      • Balun Theory - The word balun means balanced-unbalanced: it's used to adapt a balanced device to an unbalanced one
      • J-Pole theory - The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
      • Basic Antenna Theory - Basic antenna theory by sub-TV
      • Install a PL-259 on an RG-8X - A better way to install PL-259 connectors on RG-8X type coax by Dan Richardson, K6MHE
      • Why an Antenna Radiates - How antenna works by ARRL
      • Do You Need an Antenna Tuner - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format
      • Antennas and Grounds for apartments - Suggestions on finding RF ground when you live in an apartment and you want to setup an antenna
      • Dipole Height - How High should my Dipole be? Dipole Antennas and the effect of height above ground
      • FAQs - Basic Antenna Theory - Faqs and antenna basics
      • How to Construct a Dipole - Basic and illustrated article on building wire dipole antennas. This page is about "how to build a dipole antenna"
      • Grounding system - Perhaps one of the most over looked aspects of setting up a listening post is a ground system
      • Antennas : theory and designs - Thierry LOMBRY, ON4SKY, develops in several long articles all you need to know about antennas, their design and performance, for both amateurs and SWL
      • Antennas and Propagation - The most important element in a radio circuit is the antenna. You may have a powerful transmitter and a frequency, but without the correct antenna, communication will be less than desirable, if not impossible. This subcourse provides information necessary to make the right choice for an antenna and how to select the correct frequency depending upon the environmental conditions. Without an understanding of wave propagation, decisions on frequency selection and antennas could result in no communications.
      • Low Noise Antenna Connection - Reducing noise to your antenna can gain your aerial performance, learn how.
      • W1GHZ Microwave Antenna Book - The W1GHZ Online Microwave Antenna Book online
      • Antenna Noise and Signal Cancelling at LF - By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.
      • Multiband antennas - Information on multi-band antennas for the HF bands, from the horizontal end fed wire, to g5rv, log periodics, trap dipoles, vee beams and rhombic antennas.
      • Understanding Standing Wave Ratios SWR - We worry a lot about Standing Wave Ratio (SWR) in amateur radio since SWR is one indication of how well our antenna system is working. Most HF transceivers and antenna tuners have built in SWR meters. SWR is a measure of a transceiver’s output power verses the portion of that power reflected by the antenna system By Ken Larson KJ6RZ
      • G5RV Measurements - Measurements and characteristics of a G5RV Antenna, including effect of the transmission line as part of the antenna and contributes in a large way to it's multi band characteristics
      • Antenna & Mounts - Mobile antennas, how to install antennas in the roof of a vehicle and how tune antennas.
      • Dipole Calculation - Determining your proper length for the open half-wave dipole antenna
      • Using Delta Matching on HF Beams - Using delta match with HF antennas design
      • Coax velocity factor - Coax Cables velocity factor article in pdf format
      • Loading inductors in mobile antennas - Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules. Loading inductors used in mobile HF antennas.
      • Radiation and scattering - Basic antenna theory, Antenna directivity and effective area, Antenna arrays
      • Amateur Radio Antennas: Ground Theory - Perfect ground vs. poor ground. What is the difference? How does the ground influence the DX-gain?
      • Low reactance multiband center feed wires - An antenna system is more easily interfaced to a radio when the input reactance at the feedline terminals is low or close to series resonance
      • Trap antennas, coaxial trap, coax dipole antenna loss resistance - Testing and comparison of traps and trap antennas
      • Rainbow Antenna Analyzer - A small and inexpensive measurement device designed to determine antenna performance across the amateur bands through use of automatically collected SWR readings
      • Antenna Transmatch Tips - Tips on tuning antennas using Antenna Tuning Units also called ATU. This article explains the functions and ills of tuners, along with some guide- lines for building an ATU.
      • The DK7ZB-Match for Yagis - Simple, easy to built match developed in 1995 for Yagis with resistitive loads of 12.5, 18 and 28 Ohm.
      • HF antenna for high rise dwellers - If you have ever tried transmitting on HF from a tall block of apartments, where it's just not possible to erect a substantial aerial system, then this article is for you by Mel G4WYW
      Alphabetical
          Result Page:  1 2 [>>]
      • Antenna basics  pop - Basics by From Ian C. Purdie, VK2TIP
        [Hits: 22781 | Votes: 25 | Rating: 4.52]
      • Balun Theory  pop - The word balun means balanced-unbalanced: it's used to adapt a balanced device to an unbalanced one
        [Hits: 17315 | Votes: 16 | Rating: 5.61]
      • Basic Antenna Theory  pop - Basic antenna theory by sub-TV
        [Hits: 14729 | Votes: 12 | Rating: 6.33]
      • J-Pole theory  pop - The J-Pole antenna is an omnidirectional antenna that can be used for base, mobile and field day stations. It does not need a ground plane, radials or a complicated matching system. The J-Pole can be cheaply, simply and quickly constructed using a variety of techniques, some of which are discussed in this article.
        [Hits: 15637 | Votes: 22 | Rating: 7.11]
      • 50MHz Power Splitters - Splitting an antenna between two receivers or in use as the phasing harness in stacked antennas where there is a need to equally split the power from the transmitter between two antennas
        [Hits: 1598 | Votes: 4 | Rating: 9.00]
      • A Collection of Smith Chart Resources - The Smith Chart was originally created many years ago as an RF engineering aid by Phillip Smith of RCA.These pages includes extesnive documentation on smith carts.
        [Hits: 794 | Votes: 4 | Rating: 2.50]
      • A Modern Thermocouple Ammeter - Thermocouple ammeters are very rare these days, but the job they were perfect for - measuring antenna currents - is still a modern requirement especially in respect to groundplane currents. By David A. Reid PA3HBB G0BZF
        [Hits: 1193 | Votes: 0 | Rating: 0.00]
      • About broadband - What you gain and what you lose. While broadband and electrically small antennas may look attractive on the surface, they are by necessity compromises and usually don’t work as well as tuned antennas.
        [Hits: 125 | Votes: 0 | Rating: 0.00]
      • About horizontal yagi antennas - SM6EHY on horizontal yagi antenna
        [Hits: 177 | Votes: 0 | Rating: 0.00]
      • About trap antennas - Negatives sides of using trap antennas
        [Hits: 435 | Votes: 1 | Rating: 4.00]
      • Actual Antenna SWR - Easy for calculate formula which could be a wake-up call for you. The SWR value at the input of antenna cable is not a actual SWR of your favorite antenna.
        [Hits: 1296 | Votes: 0 | Rating: 0.00]
      • Advanced active VLF Loop - Article on using loop antenna in very low frequencies
        [Hits: 878 | Votes: 1 | Rating: 10.00]
      • All HF Band Antennas - F6ITV consideration on HF Antennas, from trap wired anternnas, to center feed antennas.
        [Hits: 876 | Votes: 0 | Rating: 0.00]
      • Amateur Radio Antennas: Ground Theory - Perfect ground vs. poor ground. What is the difference? How does the ground influence the DX-gain?
        [Hits: 2037 | Votes: 0 | Rating: 0.00]
      • Analysis Of Antenna Mast Strength and Bending Stress - Calculations for determining the wind loading stress on an antenna mast. Link to a spreadsheet for calculating the mast bending stress based on wind speed and antenna cross sectional area.
        [Hits: 739 | Votes: 1 | Rating: 10.00]
      • Analyzing Three Antenna Analyzers - On this page W8WWV present some measurements he made with three of the popular antenna analyzers. MFJ MFJ-269, AEA CIA-HF, Autek RF-1
        [Hits: 526 | Votes: 0 | Rating: 0.00]
      • Another way to look at vertical antennas - What iss the difference between a dipole and a vertical? Maybe not as much as you think. Come along and try another point of view.
        [Hits: 1637 | Votes: 0 | Rating: 0.00]
      • Antenna & Ground Help - Radials & Counterpoise
        [Hits: 112 | Votes: 0 | Rating: 0.00]
      • Antenna & Mounts - Mobile antennas, how to install antennas in the roof of a vehicle and how tune antennas.
        [Hits: 2820 | Votes: 6 | Rating: 8.33]
      • Antenna Cable Loss and SWR - Calculate Cable Loss from SWR and reverse. Text file with only two simply formulas
        [Hits: 893 | Votes: 3 | Rating: 4.33]
      • Antenna Fundamentals - Adalet wireless document on antenna basics in a four pages pdf file
        [Hits: 707 | Votes: 1 | Rating: 3.00]
      • Antenna Glossary - From Radiall-Larsen Antenna Technologies website technical reference documents
        [Hits: 557 | Votes: 1 | Rating: 7.00]
      • Antenna height measurements - An interesting way to determine antenna height by using simple tools and an easy technique by OZ2CPU
        [Hits: 728 | Votes: 0 | Rating: 0.00]
      • Antenna Height Theory - Antenna mounting height, the higher the better? Learn how radiation pattern change, and decide if you need an higher or a lower angle for your dx needs.
        [Hits: 802 | Votes: 1 | Rating: 1.00]
      • Antenna Measurement Theory - Introduction to Antenna Measurement by orbit /fr pdf file
        [Hits: 477 | Votes: 0 | Rating: 0.00]
      • Antenna Measurements - The electrical characteristics of an antenna that are of interest to obtain by direct measurement are the frequency at which the antenna is tuned, the gain and radiation pattern
        [Hits: 178 | Votes: 0 | Rating: 0.00]
      • Antenna Modeling Files - A collections of antenna models submitted to arrl and can be used with NEC-4 or Yagi Optimizer modeling programs
        [Hits: 958 | Votes: 0 | Rating: 0.00]
      • Antenna Modelling - Antenna modelling notes, including wich antenna modelling software choose and where to find useful resources for antenna planning and home-brewing.
        [Hits: 1413 | Votes: 0 | Rating: 0.00]
      • Antenna Noise and Signal Cancelling at LF - By using the signals from two antennas, controlling their relative amplitudes and controlling the phase of one of them, unwanted signal or unwanted noise can be phased out. Circuitry is described which uses the signal from a wire antenna to provide selective cancelling against the signal output from an LF loop antenna.
        [Hits: 4377 | Votes: 2 | Rating: 5.50]
      • Antenna Polarization notes - Antenna polarization is a very important consideration when choosing and installing an antenna. Most communications systems use either vertical, horizontal or circular polarization. Knowing the difference between polarizations and how to maximize their benefit is very important to the antenna user.
        [Hits: 1558 | Votes: 4 | Rating: 3.50]
      • Antenna Selection Made Easy - This page will help you answer important questions about antenna selection before you talk to a supplier. After reading this paper, you should be able to better determine the most important parameters you need to know for your antenna selection criteria.
        [Hits: 1026 | Votes: 2 | Rating: 3.00]
      • Antenna Theory - A discussion of antenna theory by Paul Graham, K9ERG , one of the better antenna explainations out there
        [Hits: 1354 | Votes: 7 | Rating: 7.43]
      • Antenna Theory - Introduction to Electromagnetics, Maxwell's Equations, Transmission Line, Models, scale modeling, constants
        [Hits: 309 | Votes: 2 | Rating: 10.00]
      • Antenna tips for the beginner - Some rules of thumb for beginners, with a QRP approach, by James R. Duffey KK6MC/5
        [Hits: 930 | Votes: 1 | Rating: 10.00]
      • Antenna Transmatch Tips - Tips on tuning antennas using Antenna Tuning Units also called ATU. This article explains the functions and ills of tuners, along with some guide- lines for building an ATU.
        [Hits: 1770 | Votes: 3 | Rating: 7.00]
      • Antenna-Theory.com - A source of knowledge for learning about and understanding antennas. The goal is to present a comprehensive tutorial on antennas.
        [Hits: 147 | Votes: 1 | Rating: 9.00]
      • Antennas : theory and designs - Thierry LOMBRY, ON4SKY, develops in several long articles all you need to know about antennas, their design and performance, for both amateurs and SWL
        [Hits: 5918 | Votes: 11 | Rating: 3.27]
      • Antennas and Propagation - The most important element in a radio circuit is the antenna. You may have a powerful transmitter and a frequency, but without the correct antenna, communication will be less than desirable, if not impossible. This subcourse provides information necessary to make the right choice for an antenna and how to select the correct frequency depending upon the environmental conditions. Without an understanding of wave propagation, decisions on frequency selection and antennas could result in no communications.
        [Hits: 5312 | Votes: 23 | Rating: 7.09]
      • Antennas and Grounds for apartments - Suggestions on finding RF ground when you live in an apartment and you want to setup an antenna
        [Hits: 8223 | Votes: 3 | Rating: 3.67]
      • Antennas and transmission lines - A very exaustive article on antennas and transmission lines. Covers many aspects of antennas and feed lines, in spanish
        [Hits: 263 | Votes: 1 | Rating: 2.00]
      • Antennas and Transmission Lines Myths - Antennas, Transmission Lines, Tuners - Myths, Mysteries and Qualifiers By Don Wilhelm W3FPR
        [Hits: 85 | Votes: 0 | Rating: 0.00]
      • Antennas for 100 Pound DXpeditions - NE1RD interesting publication published online about homebrewing antennas for dx peditions or portable use
        [Hits: 571 | Votes: 2 | Rating: 6.50]
      • Antennas for MF and LF - Long Waves, Short Antennas, designing antennas for MF and LF communications
        [Hits: 381 | Votes: 0 | Rating: 0.00]
      • Antennas: dirty little secrets I - Butternut article on calculating real efficiecy of commercial antennas
        [Hits: 129 | Votes: 0 | Rating: 0.00]
      • Azimuth Radiation Patterns - Below VHF the change in the radiation characteristics of an antenna will change considerably from frequency to frequency, making antenna selection more complicated.
        [Hits: 112 | Votes: 0 | Rating: 0.00]
      • Basic antenna concepts - Radiall-Larsen Antenna technologies, technical reference document describing main features of antennas, pattern types, antenna polarization and basic antenna types
        [Hits: 768 | Votes: 1 | Rating: 2.00]
      • Basics of antennas - The current, the voltage, the impedance, the bandwidth, the polarization, and how the earth influences the famous radiation pattern.
        [Hits: 80 | Votes: 0 | Rating: 0.00]
      • Better Feedline Loss Measurements with Antenna Analyzers - Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation
        [Hits: 644 | Votes: 0 | Rating: 0.00]
      • Cebik.org - W4RNL historic web site - A free historic mirror site of L. B. Cebik's W4RNL web legacy.
        [Hits: 160 | Votes: 1 | Rating: 9.00]
      • Choosing and Antenna - Beginner guide on choosing an antenna for your ham radio station by W5RH
        [Hits: 115 | Votes: 0 | Rating: 0.00]
      • Choosing Wire Size for Toroidal Inductors - Measurements that show it doesn't make much difference
        [Hits: 458 | Votes: 5 | Rating: 7.00]
      • Coax Cable Loss - Table representing loss of Coax Cables in db per 100ft.
        [Hits: 1244 | Votes: 1 | Rating: 6.00]
      • Coax velocity factor - Coax Cables velocity factor article in pdf format
        [Hits: 2182 | Votes: 11 | Rating: 4.91]
      • Coaxial antennas - G3TXQ study on coaxial cable demonstrate that it can reduce an element's length by something approaching the Velocity Factor of the cable
        [Hits: 130 | Votes: 0 | Rating: 0.00]
      • Coaxial cable dipole for 80m - Here are some simple antennas you can build along with calculators to help you get the right length.
        [Hits: 1326 | Votes: 1 | Rating: 5.00]
      • Coaxial Transmitting Chokes - Understanding Common Mode and Differential Mode Currents on Transmission Lines by K9YC
        [Hits: 200 | Votes: 0 | Rating: 0.00]
      • Common problems on receiving antennas - OK1RR experience on 160 meters receiving antennas
        [Hits: 555 | Votes: 0 | Rating: 0.00]
      • Common-Mode Noise - Receiving Common Mode Noise shows how lack of a balun can contribute to system noise
        [Hits: 1054 | Votes: 1 | Rating: 10.00]
      • Conductors for HF Antennas - Putting up an antenna for the low bands? What kind of wire will you use? This analysis may change your plans.
        [Hits: 968 | Votes: 3 | Rating: 9.33]
      • Currents in Standing-Wave Antennas - How can the current "flowing" out of the top of a mobile loading coil be greater than the current "flowing" into the bottom of the coil?
        [Hits: 208 | Votes: 0 | Rating: 0.00]
      • Dipole Antenna Radiation Patterns - Much confusion exists about the radiation patterns of antennas. In particular, the horizontal dipole is misunderstood by most who use it.
        [Hits: 1026 | Votes: 5 | Rating: 4.40]
      • Dipole Calculation - Determining your proper length for the open half-wave dipole antenna
        [Hits: 2331 | Votes: 5 | Rating: 6.20]
      • Dipole Height - How High should my Dipole be? Dipole Antennas and the effect of height above ground
        [Hits: 7646 | Votes: 11 | Rating: 6.01]
      • Directional arrays - About collinear array antennas
        [Hits: 1226 | Votes: 0 | Rating: 0.00]
      • Do You Need an Antenna Tuner - Maybe yes, maybe no. It all depends on the type of antenna and feed line you're using. QST Article in pdf format
        [Hits: 8610 | Votes: 7 | Rating: 6.00]
      • Earth Systems - In order to resonate at a particular frequency, an antenna needs to be at least one half wave length long. Antennas below a 1/2 wave are dependent on a ground system for resonance as well.
        [Hits: 191 | Votes: 0 | Rating: 0.00]
      • Easy way antenna systems - Written by John M. Haerle, WB5IIR (SK). A must read for anyone considering building a good low cost HF multi-band antenna system.
        [Hits: 422 | Votes: 1 | Rating: 10.00]
      • Effects of Very Large Ground Screens - A theoretical and experimental study of the effects of very large ground screens on 20 meter verticals
        [Hits: 127 | Votes: 0 | Rating: 0.00]
      • Effects of VSWR on Transmitted Power - By James G. Lee, W6VAT
        [Hits: 504 | Votes: 2 | Rating: 5.00]
      • Errante's capacitive RF Grounding - This system demonstrates that no galvanic coupling to earth is needed for a proper RF earth grounding
        [Hits: 35 | Votes: 1 | Rating: 10.00]
      • Exploring the secrets of the Smith chart - If you're a Radio Engineer wannabee, you need to understand transmission lines. It's impossible to really understand transmitters and antennas without understanding lines. Using the Smith chart is far easier than really understanding the math by Chris Scott and associates
        [Hits: 280 | Votes: 0 | Rating: 0.00]
      • FAQs - Basic Antenna Theory - Faqs and antenna basics
        [Hits: 7084 | Votes: 4 | Rating: 6.50]
      • Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
        [Hits: 418 | Votes: 0 | Rating: 0.00]
      • Fiber Glass Rods and Tubes - Properties of fiber glass rods and tubes
        [Hits: 533 | Votes: 1 | Rating: 5.00]
      • From Transmitter to Antenna - A collection of articles on the subject of impedance, impedance matching and high-frequency power transmission by G3YNH
        [Hits: 265 | Votes: 0 | Rating: 0.00]
      • G0KSC Revolutionary Yagi Antenna Feed System - New feed system for the Yagi directional beam antenna, that suppress unwanted side lobes within longer Yagi designs by G0KSC
        [Hits: 242 | Votes: 4 | Rating: 7.75]
      • G5RV Measurements - Measurements and characteristics of a G5RV Antenna, including effect of the transmission line as part of the antenna and contributes in a large way to it's multi band characteristics
        [Hits: 4168 | Votes: 4 | Rating: 6.00]
      • Ground Problems - Collection of articles about ground systems
        [Hits: 626 | Votes: 1 | Rating: 7.00]
      • Grounding system - Perhaps one of the most over looked aspects of setting up a listening post is a ground system
        [Hits: 6618 | Votes: 6 | Rating: 4.17]
      • Groundplane Antennas at Various Heights - Mounting on Roof or at Ground Level?
        [Hits: 141 | Votes: 0 | Rating: 0.00]
      • Harmonic Operation of OCFs - Up, Up, and Away or Harmonic Operation of OCFs
        [Hits: 118 | Votes: 0 | Rating: 0.00]
      • HF antenna for high rise dwellers - If you have ever tried transmitting on HF from a tall block of apartments, where it's just not possible to erect a substantial aerial system, then this article is for you by Mel G4WYW
        [Hits: 1716 | Votes: 1 | Rating: 8.00]
      • HF Antennas 101 - Here are 10 tips and truisms that every ham should know about antennas, by W20QI
        [Hits: 182 | Votes: 0 | Rating: 0.00]
      • HF insulation, the pitfalls - Although insulation may seem relatively insignificant in the larger picture, on it depends the quality of your performance on air and how long you will be communicating for.
        [Hits: 109 | Votes: 0 | Rating: 0.00]
      • HF loops vs Half Loops - HF loop and half-loop antennas in a few words
        [Hits: 249 | Votes: 0 | Rating: 0.00]
      • Horizontal Antennas above Real Ground - Antennas are influenced by the effect of the ground and by the type of conductors from which they are constructed. Effects of various types of grounds on a 1.825 MHz horizontal 0.5 wave dipole
        [Hits: 97 | Votes: 0 | Rating: 0.00]
      • Horizontal Half-wave Dipole above a Counterpoise - All antennas that are situated close to the ground are affected by that ground to some extent. This article explain effects and benefits of counterpoise.
        [Hits: 308 | Votes: 0 | Rating: 0.00]
      • How to Construct a Dipole - Basic and illustrated article on building wire dipole antennas. This page is about "how to build a dipole antenna"
        [Hits: 7020 | Votes: 15 | Rating: 7.00]
      • Idiot's guide to antennas - A very basic guide to antennas concept. Explain the usage of dummy load, basic antennas like dipole o j-poles.
        [Hits: 555 | Votes: 0 | Rating: 0.00]
      • Importance of noise reduction in wires antennas - An old post by John Doty about effects of noise in longwire antenna.
        [Hits: 411 | Votes: 0 | Rating: 0.00]
      • Indoor Random Wire versus Indoor Magnetic Loop - Comparison of performance between an indoor random wire versus a magnetic loop using psk31
        [Hits: 658 | Votes: 2 | Rating: 7.00]
      • Install a PL-259 on an RG-8X  updated - A better way to install PL-259 connectors on RG-8X type coax by Dan Richardson, K6MHE
        [Hits: 9624 | Votes: 17 | Rating: 8.11]
      • Integrated Publishing Basics - Radio wave propagation, Principles of transmission lines, Antennas
        [Hits: 745 | Votes: 0 | Rating: 0.00]
      • Interference Cancelling System - The use of interference signal cancellation has been around for some time. The idea is to use an auxiliary antenna almost any random length of wire in addition to the main receiving antenna
        [Hits: 1100 | Votes: 1 | Rating: 3.00]
      • K-FACTOR Table & Chart - Determine the K-Factor used as a multiplier when constructing half-wave antennas.
        [Hits: 1278 | Votes: 15 | Rating: 4.14]
      • Les antennes: antenna theory - A basic antenna theory with final quiz in french
        [Hits: 126 | Votes: 0 | Rating: 0.00]
      • Link-Coupled Antenna Tuners - W4RNL tutorial on on inductively coupled (link-coupled) antenna tuners
        [Hits: 773 | Votes: 1 | Rating: 10.00]
      • Loading inductors in mobile antennas - Mobile antennas, loading coil current, and loaded antennas. efficiency and electrical rules. Loading inductors used in mobile HF antennas.
        [Hits: 2166 | Votes: 1 | Rating: 9.00]
      • Local QRM reduction - It is not always possible to tackle the sources of local QRM. What remains is trying to reduce the noise level by means of your antenna system. Learn how to reduce QRM and understand how cancell noises by PA0SIM
        [Hits: 434 | Votes: 0 | Rating: 0.00]
      • Loop Antenna Basics - Loop Antenna Basics and Regulatory Compliance for Short-Range Radio
        [Hits: 328 | Votes: 0 | Rating: 0.00]
        Result Page:  1 2 [>>]
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      Antennas/Theory ©1998-2009 The DXZone.com Ham radio guide Terms of Use, Copyright & Privacy Policy Last Update: Sat Jul 04 2009 - 08:52:25