- Antenna Design Lab by N4UJW
- Design and build your own Hf thru Vhf antennas.Contains pictures, plans, parts list of very popular ham antennas along with experimental types.
[ Hits: 6565 | Votes: 11 | Rating: 7.09 ]
- 160-meters antenna problems and solutions
- Bill Orr W6SAI ham radio techniques. Improving ground connection, computer analysis of the antenna, modelling sample antennas pdf file
[ Hits: 3513 | Votes: 6 | Rating: 9.3 ]
- 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: 3241 | Votes: 6 | Rating: 8 ]
- 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: 6329 | Votes: 75 | Rating: 8.65 ]
- Antenna construction hints
- Hints about Jpole Yagi and Quad antennas
[ Hits: 2682 | Votes: 5 | Rating: 5.2 ]
- Antenna Gain Comparison System
- This device goal is to optimize homebrew antenna for the V/UHF band. This tool, is based itself on the simultaneously comparison between two antenna, directly in dB. by IK0BDO
[ Hits: 2211 | Votes: 12 | Rating: 5.58 ]
- Antenna Impedance measurement
- When experimenting on an antenna it's often important to determine its feedpoint impedance at various frequencies across the operating band. It's easy enough to measure SWR, but sometimes we need to know more detail than this
[ Hits: 1423 | Votes: 6 | Rating: 2.67 ]
- Antenna Insulators for LF-MF
- Homebrewing special insulators with PVC and copper corona rings
[ Hits: 625 | Votes: 0 | Rating: 0 ]
- Antenna Manufacturing: How to Prevent Galvanic Corrosion
- Galvanic corrosion, a destructive process triggered by dissimilar metal contact in a corrosive electrolyte, poses a significant threat in antenna manufacturing. With aluminum and stainless steel components commonly involved, unaddressed corrosion can lead to white particle accumulation, causing long-term damage. Awareness of the galvanic series and the application of protective coatings like Alumslip can mitigate this pervasive issue, ensuring a prolonged antenna lifespan.
[ Hits: 33 | Votes: 0 | Rating: 0 ]
- Antenna Trimming Chart
updated
- Use this chart as an aid in trimming the length of your antenna. It gives you an idea of the change in wire length needed to move antenna resonance a specific number of KHz.
[ Hits: 3526 | Votes: 5 | Rating: 5.6 ]
- Assembling a Spider Beam
- Spider Beam antenna pictures in a youtube video
[ Hits: 921 | Votes: 0 | Rating: 0 ]
- 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: 1909 | Votes: 2 | Rating: 10 ]
- Building Coaxial Traps
- This page describes the design and construction materials W8WWV used to build a coaxial cable trap. A coaxial cable trap is a parallel resonant circuit that is usually inserted in an antenna element to enable multiband operation.
[ Hits: 10246 | Votes: 5 | Rating: 8.2 ]
- Building UHF Antennas
- This method of construction can be used on most UHF through \"low\" microwave Yagis, and is especially useful for the 33, 23 and 13 cm bands
[ Hits: 712 | Votes: 1 | Rating: 10 ]
- CB antennas
pop
- Lots of information on fabricating CB antennas
[ Hits: 29812 | Votes: 36 | Rating: 7.12 ]
- Center feed insulator
- A center antenna insulator with feedline strain relief
[ Hits: 1754 | Votes: 1 | Rating: 9 ]
- Choosing right material to make antennas
- Why build antennas out of copper and not aluminum or stainless steel. Selecting the best metals for antennas evaluating the conductivity factor.
[ Hits: 335 | Votes: 2 | Rating: 5.5 ]
- Choosing the Right Aluminum Stock for Antenna Building
- Building an efficient antenna begins with selecting the right aluminum stock. This article provides a comprehensive guide to sourcing aluminum materials for antenna construction. It covers different aluminum grades, their tensile strengths, tempering options, and their suitability for various antenna components. The article also recommends reputable suppliers in the UK, making it a valuable resource for antenna builders seeking durable and high-performance materials.
[ Hits: 54 | Votes: 0 | Rating: 0 ]
- 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: 1287 | Votes: 1 | Rating: 10 ]
- 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: 2265 | Votes: 4 | Rating: 9.25 ]
- Conductors for HF antennas : Foil
- About foil conductors
[ Hits: 1369 | Votes: 0 | Rating: 0 ]
- Constructing simple wire antennas
- Simple wire antennas like dipoles and verticals are dead easy to make: here's how
[ Hits: 2414 | Votes: 0 | Rating: 0 ]
- Converting RadioShack CB Antenna to 2m
- Converting a little Radio Shack CB mobile magnet mount antenna to a VHF ham radio antenna
[ Hits: 572 | Votes: 2 | Rating: 5.5 ]
- Designing Driven Elements in Yagi antennas
- The design and feeding of driven elements for VHF/UHF Yagi antennas , modeling, observations and some case studies by Graham Daubney F/G8MBI
[ Hits: 1119 | Votes: 2 | Rating: 6 ]
- Easy tuning an building of traps
- A new and simple method for tuning traps. You need 2-3Watt of your TRX and two homemade coupling coils by DK7ZB
[ Hits: 6572 | Votes: 163 | Rating: 8.06 ]
- Ferrite information
- Ferrite Toroidal Cores, Magnetic Properties of Ferrite Materials, EMI - RFI Suppression
Design Considerations, Ferrite Beads, Ferrites for RFI Ferrite Cores for RFI Suppression
by CWS ByteMark
[ Hits: 13684 | Votes: 4 | Rating: 5 ]
- Fixture for fast assembling VHF Antennas
- This fixture id intended for fast assembly and disassembly of VHF antennas, expecially usefull for experimenters
[ Hits: 612 | Votes: 0 | Rating: 0 ]
- Folded Dipoles for VHF/UHF Yagis
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- Make your own VHF/UHF folded dipoles from aluminium tubing. Learn tips for folding yagi, softening the tubing, bending jig and make all waterproofing
[ Hits: 44767 | Votes: 31 | Rating: 5.8 ]
- From Transmitter to Antenna
- A collection of articles on the subject of impedance, impedance matching and high-frequency power transmission by G3YNH
[ Hits: 1159 | Votes: 0 | Rating: 0 ]
- Ham Radio Wire Antenna Tips
- Ham radio wire antennas are the most common form of antenna used by ham radio operators. Here you can find hints and tips on diy wire antennas
[ Hits: 709 | Votes: 1 | Rating: 10 ]
- Home-brew Antennas
- Notes on homebrewing antennas by Chris G4CYA, from gamma matching, to phasing antennas, splitters and combiners, baluns and measuring techniques.
[ Hits: 3150 | Votes: 1 | Rating: 10 ]
- Homebrew traps
- Traps can be one way round multiband coverage without the need of an atu. Learn how to homebrew your own traps
[ Hits: 3761 | Votes: 3 | Rating: 5.33 ]
- Homebrew your own inductors
pop
- Cannot find the inductors you need for an antenna, a tuner or amplifier ? Build your own it is
easy!
[ Hits: 28431 | Votes: 21 | Rating: 6.95 ]
- Homebrewing Yagi Antenna
- Some techniques on homebrewing yagi antennas by VK5AJL
[ Hits: 554 | Votes: 0 | Rating: 0 ]
- How to straighten Microbore copper tube
- Article and video showing a technique to straighten Microbore copper pipe that is useful in antenna construction. This technique has been implemented to build a Quadrifiliar Helix antenna.
[ Hits: 324 | Votes: 0 | Rating: 0 ]
- Indoor Antenna Construction Tips
- Safety tips and troubleshooting ideas by K2ZS
[ Hits: 767 | Votes: 2 | Rating: 8 ]
- Installing dipole insulators
- Installing your dipole end insulators, a beginner guide to proper setup wires to insultaors.
[ Hits: 20952 | Votes: 8 | Rating: 8.5 ]
- K-FACTOR Table & Chart
- Determine the K-Factor used as a multiplier when constructing half-wave antennas.
[ Hits: 3214 | Votes: 42 | Rating: 4.02 ]
- K5TR'S Antenna Designs - YO files
- Antenna designs that K5TR have collected from various sources.
[ Hits: 1111 | Votes: 2 | Rating: 9 ]
- Metal Fatigue and Antenna Elements
- by Technical Topics
[ Hits: 448 | Votes: 0 | Rating: 0 ]
- Mounting elements to a boom
- Here is an easy method to mount elements to a boom, this can be realized at home, without the need of special tools
[ Hits: 2150 | Votes: 3 | Rating: 5.67 ]
- Omega and Gama Matching
- Article about omega and gamma matching, related to bandwidth, loss and component failures, heating and power ratings
[ Hits: 3279 | Votes: 3 | Rating: 7 ]
- Open Sleeve Elements
- The construction principles for open-sleeve elements in antennas
[ Hits: 589 | Votes: 1 | Rating: 7 ]
- Optimizing half-wave sloper arrays for 160 meters
- This article presents a 160-meter variation of this family of antennas and, more importantly, a discussion of the details of how to get such a beast
working really well.
[ Hits: 5210 | Votes: 2 | Rating: 7 ]
- Phasing Harness for Stacking Antennas
- How to build a phasing harness for stacking antennas
[ Hits: 1044 | Votes: 45 | Rating: 7.81 ]
- Practical Yagi Building
- A practical guide on hombrewing Yagi antennas, including notes on Driven Element, Transformation & Symmetrising Coax Lines, Full Boom length vs. electrical length, Elements & Insulators on Boom and additional tips and tricks, in English and German
[ Hits: 362 | Votes: 0 | Rating: 0 ]
- PVC Yagi antennas - techniques
- Collection of different techniques to homebrew PVC yagi antennas, including elements assembling, baluns and chokes, radiator box tips and tricks by dk7zb
[ Hits: 1606 | Votes: 4 | Rating: 3.5 ]
- Radial System Design
- Are the lengths of antenna radials related to the height of a vertical? By N6LF
[ Hits: 859 | Votes: 1 | Rating: 5 ]
- Recycling TV Antennas for 2-Meter Use
- Green that aluminum into something useful right in your own backyard by WB2CQM
[ Hits: 1117 | Votes: 1 | Rating: 8 ]
- Rolling your own balanced feed lines
- An article by VE1VQ that illustrate how to home made a balanced feed line
[ Hits: 1868 | Votes: 1 | Rating: 10 ]
- 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.
[ Hits: 3635 | Votes: 8 | Rating: 6.38 ]
- This Old Dipole
- An antenna construction workshop conducted at Marshall N1FN's QTH
[ Hits: 11832 | Votes: 6 | Rating: 7.17 ]
- To Trap or Not to Trap
- An interesting article on traps, pros and cons of trapping by W4RNL
[ Hits: 4148 | Votes: 4 | Rating: 3.25 ]
- Use of tripods to assemble and balance big antennas
- Here is a way to ease assembly and balancing of a large antenna. The elements and boom are assembled separately in most cases. Once they are all together set up 2 tripods in the assembly area and put the boom on them.
[ Hits: 2156 | Votes: 1 | Rating: 10 ]
- Using Delta Matching on HF Beams
- Using delta match with HF antennas design
[ Hits: 5664 | Votes: 5 | Rating: 3 ]
- W4RNL Antenna notes
- Antenna modelling techniques and examples by W4RNL
[ Hits: 6817 | Votes: 56 | Rating: 8.31 ]
- Weatherproof Vertical Antennas - Slim Jim
- How to make a Weatherproof Vertically Polarised Omnidirectional Aerial, The Slim Jim Antenna
[ Hits: 5454 | Votes: 4 | Rating: 5.75 ]
- Wind your own RF Choke
- Learn How - Winding your own RF Choke, Inductor Winding instructions
[ Hits: 1345 | Votes: 4 | Rating: 8.75 ]
- Wire Antenna Design Lengths
- The Classic Numbers for All Types of Wire Antennas at HF. Wire antennas need to be made a bit long and cut to resonance. They are affected by height above the ground and surrounding objects. In order to get an idea of the right place to start, certain formulas are generally accepted.
[ Hits: 319 | Votes: 1 | Rating: 7 ]
- Wire Sizes
- Sizes of wire as compared to their gauge American Wire Gauge by W8HDU
[ Hits: 769 | Votes: 1 | Rating: 9 ]
- Yagi antenna construction notes
- KA7OEI article on homebrewing Yagi UDA antennas with practical suggestions and designing notes.
[ Hits: 910 | Votes: 0 | Rating: 0 ]
- Yagi Antenna Elements Boom Correction
- Dragoslav Dobricic, YU1AW antennex article on influence of Boom on frequency performance and how compensate it
[ Hits: 978 | Votes: 1 | Rating: 2 ]
- Yagi Element Mounting Considerations
- One of the most important considerations when designing and building a Yagi antenna is the method used to attach the elements to a boom. This is true because the boom influences the electrical length of the elements. In this article JH Reisert explain with drawings techniques on mounting yagi antenna elements to a boom
[ Hits: 4300 | Votes: 2 | Rating: 8.5 ]
