field antenna
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Antennas : 2M- The Moxon Rectangle on 2 Meters
- We often think of the Moxon rectangle as strictly an HF antenna. However, its small size and special far field pattern lend themselves to some VHF applications. So let's see how to adapt the design to 2 meters (as a popular band choice) and also see a few of the uses to which we may effectively put the design.
[ Hits: 11948 | Votes: 13 | Rating: 2.85 ]
- Crossfire Phasing
- Phased antennas elements use radiated fields from multiple elements to produce nulls.
[ Hits: 1189 | Votes: 3 | Rating: 9.33 ]
- The Bazooka Antenna
- Notes on bazooka antennas by Katunk: a portable field antenna, sometimes called the double bazooka or a coaxial antenna.
[ Hits: 4385 | Votes: 4 | Rating: 7 ]
- CF and EH antennas
- Crossed-Field Antennas and E/H Antennas
[ Hits: 3047 | Votes: 1 | Rating: 1 ]
- A two dollar helical hf portable antenna
- Here is an easily transportable vertical antenna for 20 meters collapsible to 4 feet that costs about $2.00 to make.
This was created as a fun project to demonstrate how to enjoy operating HF in the field with a home-made portable antenna without spending a ton of money.
Bev AH6NF (YL) made this antenna, tuned and ready to operate in less than one hour
[ Hits: 22387 | Votes: 14 | Rating: 7.65 ]
- J-Pole theory
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- 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: 30316 | Votes: 26 | Rating: 6.87 ]
- Magnetic loop by F5SWN
- The magnetic loop, thus named by the use of the magnetic component of the electromagnetic field, is a parallel circuit LC. In this article a sample project to home made a custom antenna. The circular form is often met on the commercial models but this antenna can be hexagonal, octagonal or square.
[ Hits: 253 | Votes: 4 | Rating: 5.25 ]
- Travel loop antennas
- PA11019 Travel loop antennas, these antennas cover 6.300 to 29.200 mHz , handle 35 Watts and have a packing size of 43 cm, ideal for fieldwork, or mobile operations.
[ Hits: 3563 | Votes: 2 | Rating: 9.5 ]
- Portable HF Antenna for the field day
- This article describes a project of asymmetrical hatted vertical dipole, a portable antenna that can be used for field day operations, sota, campings or even for fixed installations. This is a freestanding 20-10m antenna that is really easy to build, easy to tune and relatively easy to carry.
[ Hits: 1643 | Votes: 2 | Rating: 7.5 ]
- Coaxial half-wave antenna
- A handy solution to have a half wave antenna for fieldwork on a 12m fishing rod.
[ Hits: 682 | Votes: 1 | Rating: 2 ]
- Crossed Field Antenna
- The Crossed Field Antenna (CFA) is one of the applications of Correction of Maxwell's Equations which was used over 150 years ago which was proved these days that the Magnetic Field Source is only the Displacement Current not the Conduction Current .
These Corrections was made by an Egyptian Doctor Engineer Fathi Kabbary , who reached the New Correct Theory which shows that the height and efficiency of the antenna doesn't depend on the wavelength
[ Hits: 2306 | Votes: 5 | Rating: 2.8 ]
- The mark 2 Crossfield Antenna
- The mark 2 Crossfield Antenna was described in Sprat 76 by Alec, GD3HQR
[ Hits: 718 | Votes: 0 | Rating: 0 ]
- VHF/UHF Yagi Antenna Design
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- Design your VHF UHF Yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna for 2m and 70cm bands. This page offers a streamlined experience for Yagi antenna design enthusiasts. It assumes prior knowledge of Yagi design principles, minimizing distractions with a user-friendly interface. Equipped with essential equations, it provides instant design feedback. Red font warnings indicate design limitations, ensuring practical results. Constraints include Gain (11.8-21.6 dBd) and Boom Length (2.2-39 wavelengths), with additional frequency-dependent restrictions noted in input fields.
[ Hits: 147401 | Votes: 1105 | Rating: 6.95 ]
- HF Wire antennas
- About HF Wire Antennas for field day or any day
a basic wire antenna article
[ Hits: 1957 | Votes: 5 | Rating: 7.16 ]
- The Field Day Special Antenna
- Antenna that's simple,
inexpensive lightwiight and easy to install
[ Hits: 3657 | Votes: 6 | Rating: 6 ]
- Portable Wire Antenna
- W4ZT used this antenna for Field Day and other portable applications. He built them for all bands between 160 meters and 6 meters. You can make them easily using whatever wire you have available and make the insulators from scrap plastic
[ Hits: 1919 | Votes: 2 | Rating: 7 ]
- EZMaster by HamRadioSolutions
- EZMASTER the all mode all in one interface. USB/Parallel/Serial Device. Include 75 sec Digital Voice Keyer, K1EL Winkey CW Keyer, SO2R switching, two radio interface, two RTTY audio insulated ports, two flexible Antenna Switch control. Ideal for Contesting, SO1R, SO2R, field day and daily activity.
Compatibile with all software on the market : CT, CTWIN, TR, NA, WriteLog, N1MM, WinTest, MMTTY, MIXW and more .
[ Hits: 2084 | Votes: 4 | Rating: 4.25 ]
- SAT-Service Schneider
- Digital radio mondiale DRM products, measuring tools, Magnetic field probes, RF power meters, Broadband loop antennas, DRM devices and services
[ Hits: 862 | Votes: 0 | Rating: 0 ]
- RM Italy
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- RM is an Italian company operating in the radio communication field since 1974, main products are: HF-CB-VHF-UHF-Dual Band Amplifier, Power Supply, DC-DC Converters Antennas and more
[ Hits: 42737 | Votes: 102 | Rating: 6.83 ]
- 4NEC2 antenna modeler
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- 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler.
Can be interfaced to HFwin32 propagation prediction software.
[ Hits: 30095 | Votes: 131 | Rating: 7.32 ]
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