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hf antenna design
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about hf antenna design on dxzone.com
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Antennas Antennas : 17M
- W3FF Portable Dipole
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- This is the antenna w3ff designed for his walking portable station. It is a dipole constructed out of the plastic plumbing pipe CPVC. There are telescoping whips at the ends of each side of the dipole, and these whips are adjusted to bring the antenna into resonance on each of five HF Bands 10, 12, 15, 17, and 20 Meters
[Hits: 16731 | Votes: 12 | Rate: 7.82] 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: 7052 | Votes: 5 | Rate: 3.20] Antennas : 6M Antennas : Collinear Antennas : G5RV
- G5RV multi-band antenna
- Multi-band centre-fed antenna capable of very efficient operation on all HF bands, specifically designed with dimensions which allow it to be installed in gardens and other open spaces which accommodate a reasonably-straight run of 31.1m (102 ft) for the flat-top standard model.
[Hits: 5943 | Votes: 6 | Rate: 7.50] Antennas : Homebrewing Techniques Antennas : Log Periodic Antennas : Mobile
- Home Brew VHF UHF dual band antenna
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- Contructing precedure and tune up of a dual band mobile antenna. This antenna is just a 1/4 wavelength resonator for both UHF and VHF band. It provides no GAIN as compared to other multi-section design.
[Hits: 30219 | Votes: 30 | Rate: 4.10] - HF Mobile Antenna HB9ABX
- Most efficient hf mobile antenna, This mobile antenna is designed for all HF bands from 10 to 80 meters an proved to be very efficient in my travels in South America on 15 and 20m for contacts to Europe and within South America.
[Hits: 4366 | Votes: 8 | Rate: 7.51] Antennas : Satellite Antennas : Shortwave
- Build your first dipole
- The dipole antenna is an easily designed and made antenna usually used on HF, although can be (and sometimes is) made for VHF and UHF antennas, and in varying forms is also used as part of different designs of antennas – i.e. as the driven element for directional antennas.
[Hits: 13275 | Votes: 13 | Rate: 7.39] Antennas : VHF UHF
- VHF/UHF Yagi Antenna Design
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- Design your vhf yagi antenna online, a JavaScript enhanced web page that implements the design of an antenna in the VHF, UHF by K7MEM
[Hits: 120623 | Votes: 617 | Rate: 6.27] Antennas : Vertical
- Quarter Wave with radials
- VHF quarter wave antenna mainly for scanner usage, The quarter wave antenna is an easily designed and constructed antenna for whatever frequency you want, although with the following design, you may to limit it to the VHF and UHF bands due to the physical size.
[Hits: 6640 | Votes: 5 | Rate: 7.20] - New HF antenna HB9ABX
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- A new, revolutionary design allows the construction of small HF antennas,
which provide the same efficiency as large antennas. This antenna can be built for all HF bands, from 10 to 80 m.
[Hits: 18771 | Votes: 27 | Rate: 8.93] Antennas : Windom Manufacturers : Antennas : HF
- Valcom Fibreglass Whip Antennas
- Manufacturer of Fibreglass Whip Antennas, Low and mediun Frequency, HF and VHF Antennas
Specialized in the design and manufacturing of a full range of Beacon (MF), AM Broadcasting 540 - 1700 KHz, HF 1.7 to 30 MHz, VHF 30 to 156 MHz and UHF 200 to 500 MHz antennas.
[Hits: 2606 | Votes: 2 | Rate: 8.00] Manufacturers : Antennas : HF : Log Periodic Antennas
- KMA Antennas
- KMA Antennas specializes in HF - VHF - UHF Log Periodic Antennas, unique antennas for the Six Meter band and custom antenna designs.
[Hits: 4932 | Votes: 5 | Rate: 7.00] Manufacturers : Antennas : Marine
- ZCG Scalar
- Designers and manufacturers of radio Frequency antennas. HF - 3000 MHz TET Emtron HF Yagis, Antennas for Wireless applications, Marine antennas, Land mobile, Mobile antennas.
[Hits: 1404 | Votes: 7 | Rate: 9.29] Manufacturers : Antennas : VHF UHF Microwave
- W3FF Antennas Buddipole
- The Buddipole is a hi-tech, take-apart dipole designed for HF portable operations. The antenna uses a multi-band adjustable coil for all bands 40m - 2m.
[Hits: 2957 | Votes: 7 | Rate: 9.57] Manufacturers : Towers and Accessories
- Rotating Tower Systems
- Using our components you can build a rotating tower with greater capability than 3-4 static towers. A rotating tower allows common rotation of HF stacked arrays, VHF and UHF arrays, and antennas mounted at optimum heights. Component design also allows tower shunt loading and end support for wire antennas
[Hits: 1033 | Votes: 2 | Rate: 7.50] Software : Antenna analysis
- PolarPlot
- Freeware antenna software that lets you see what the polar diagram of your rotatable beam actually looks like where it is operating.
With PolarPlot you can measure the polar diagram of the antenna and check for abnormalities - compare plots taken before and after changes to the design or location - check the -3dB beamwidth - look at the front to back ratio - see the size and position of the sidelobes.
[Hits: 4618 | Votes: 5 | Rate: 6.60] - Ariel 30
- HF wire antenna design program by WB4ZYA for DOS
[Hits: 2956 | Votes: 3 | Rate: 5.67] - HamCalc v1.3
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- By G4VWL, HamCalc is collection of calculators for radio amateurs: Antenna ERP calculations.
Attenuators. Audio Filter design.Coil Winding.
Decibels. Great Circles map and calculator HF Filters HF Traps Metric conversions OP Amps
QRA Locator to Latitude/Longitude (and back)
Radio Horizon calculator Resonance Satellite orbit calculator Timer calculations (555 timer)Zener Diode calculations
[Hits: 13812 | Votes: 52 | Rate: 4.06]
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