Helical Antenna Calculator For Amateur Radio
Helical antenna calculator by R.J. Edwards G4FGQ. The main reason for using a helically wound antenna is to obtain a low height at a given frequency. Ideally, it should be…
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Become a Ham Radio Operator
Become a Ham Radio Operator A Yaesu FT-2000 tranceiver. Photo by Hideki Saito on flickr Amateur radio is a popular hobby with over 690,000 participants in the U.S. alone. But…
Antenna Tuner
An antenna tuner, also known as a transmatch, is a device for correcting an impedance mismatch between a transmitter or receiver and an antenna. The Tuner Fallacy It is often…
Antenna Loading Coil
An antenna loading coil is an inductor placed in series with an antenna element in order to lower the antenna’s resonant frequency. A standard dipole antenna is resonant if constructed…
NVIS communications in the HF band
NVIS communications in the HF band Fundamentals of the propagation using near vertical incident skywave (NVIS) in the HF band, describing the geometry of the circuits and how to select…
QRP 900 GRAMS HYDRAULIC TUNED SMALL MAGNETIC LOOP
My name is Alexandre Grimberg, my call sign is PY1AHD. I have born in Rio de Janeiro in 1949.I receive the PY1XLS call sign on the year 1978, and in…
9M2SX’s 40m-20m Magnetic Loop Antenna
Having Space Constraint At Your QTH To Put Up An Antenna For HF Band?. Then Try Constructing This Magnetic Loop Antenna. Dwelling on the 7th floor of a 12-storey flats…
Ubuntu Hams T-shirt Artwork From 9M2PJU
This is the first design of Ubuntu Ham Radio tshirt from me, Give me your comments or email me for further info. Special thanks to Kamal for the logo. i…
Helical Antenna
A helical antenna is an antenna consisting of a conducting wire wound in the form of a helix. In most cases, helical antennas are mounted over a ground plane. Helical…
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KC2UHB’s Collapsible Fabric Yagi Antenna
Congratulations to Miss Diana Eng KC2UHB for her new Collapsible Fabric Yagi Antenna. Combination between fashion, sewing skills and ham radio skills make it possible. Her favorite ham radio activities…
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Yagi Calculator by John Drew VK5DJ
Yagi Calculator is a Windows program (also runs well on Linux – Ubuntu 8.10 under Wine) to produce dimensions for a DL6WU style long Yagi antenna. Long yagis are commonly…
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SWR Reading For My 146mhz Homebrew Slim Jim Antenna
SWR Meter Setup ICOM 2200H –> SWR Meter –> Slim Jim Antenna 145mhz 146mhz 147Mhz p/s: I’m not a good “MacGyver”
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My New 146Mhz Slim Jim Antenna
I have successfully made an antenna for my daily use using slim jim diagram for 146mhz connected to ICOM 2200H mobile rig powered by computer power supply unit (PSU). Now…
Slim Jim Antenna Diagram For Amateur Radio
I’m using http://www.m0ukd.com/Calculators/Slim_Jim/index.php to design this slim jim antenna diagram. very helpful to me, maybe for you all too. You can design slim jim antenna and j-pole by using this…
Slim Jim & J-Pole Antenna Calculator By M0UKD
The Slim Jim is a vertically polarized omnidirectional end-fed antenna having considerable “gain” and this is concentrated almost parallel to ground toward the horizon rather than skyward making it more…
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Amateur Vertical Antenna Web Based Calculator
While search for something, i have found this website. i think is it good to share. an amateur vertical antenna web based calculator. http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=16291
QuickYagi – Yagi Modelling Software By WA7RAI
WA7RAI wrote this yagi modeling program in 1990. Despite being written for MS DOS, it is surprisingly user friendly, highly accurate, and is loaded with features. Although this program is…
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RF Toolbox – Antenna Designing Software
RF Toolbox is an antenna design and electronics/electrical tool package. It takes you step by step through the design of the following types of antennas: Dipole Fat Dipole Yagi J-Pole…