hf dip meter
20 links
Antennas : 20M : 20 meter Dipole Antennas
- VK5AH -HF 4 Bander dipole
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- A multiband 80-40-20-15 meters dipole wire antenna that can be extended to cover 160 meters too.
[ Hits: 54024 | Votes: 22 | Rating: 6.68 ]
- VHF Dipole with Gamma Match
- 2 meters band VHF dipole with gamma match system
[ Hits: 3175 | Votes: 27 | Rating: 4.6 ]
- VHF sleeve dipole antenna
- An off-center-fed sleeve dipole, made of CPVC and aluminum foil tape by KV5R
[ Hits: 805 | Votes: 0 | Rating: 0 ]
- NVI 40 Meter Antenna Modeling
- The idea of using a low mount dipole, enhanced with reflector wires directly beneath the dipole, on the ground, appears to be a very good approach to creating an NVI specific antenna for local HF operation.
[ Hits: 3004 | Votes: 0 | Rating: 0 ]
- Make a Compatct Dipole for 7 MHz
- This article demonstrate how to build and mount a 40 meter loaded dipole using basic materials. This antenna reduce the overall length of an HF dipole through the use of loading coils.
[ Hits: 215 | Votes: 0 | Rating: 0 ]
- CobWeb multiband folded dipole
- The cobweb antenna it is basically a 5 band antenna comprising of 5 full half wave dipoles for each band - between 10 meters and 20 meters, the antenna is also resonant on 6M and can be modeled even for VHF frequencies.
[ Hits: 8620 | Votes: 0 | Rating: 0 ]
- W3FF Portable Dipole
- 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: 22059 | Votes: 14 | Rating: 8.13 ]
- Short Tri-Band Vee Dipole
- A three band short Vee antenna is feasible with two legs per side on a dipole. 10-15-20 meters by W8HDU
[ Hits: 1047 | Votes: 2 | Rating: 6.5 ]
- How to construct a multi-band dipole using speaker wire
- How to homemade a multi-band HF dipole using 100 meter of speaker wire, 2 strandsm including a homebrew 1:1 choke balun
[ Hits: 875 | Votes: 1 | Rating: 10 ]
- Quad Band Inverted V Antenna
- An inverted V Dipole antenna for HF bands, working on 10 20 40 and 80 meters band. PDF Presentation
[ Hits: 379 | Votes: 1 | Rating: 7 ]
- Small HF Antennas
- Experiments on HF antennas for restricted spaces.
In this article author experiments antennas for 80-10 meters band having just a very small garden and several restrictions. Basic antennas consists of laded multiband dipoles and fan dipole antennas
[ Hits: 1014 | Votes: 19 | Rating: 7.31 ]
- Build a Simple VHF Dipole Antenna for 2 Meters: A Beginner's Guide
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- This article serves as a beginner-friendly guide to constructing a simple VHF dipole antenna for 2 meters, perfect for novices in the hobby. With an emphasis on affordability and simplicity, it explains the basics without overwhelming technical details. Recommendations for coaxial cable and mounting methods are provided, offering practical solutions for effective communication. By following these instructions, novices can build a functional antenna without breaking the bank.
[ Hits: 106 | Votes: 1 | Rating: 7 ]
- HF Fan Dipole Attic Antenna
- 40/20/10 Meter Fan Dipole attic antenna article by KD2GOE
[ Hits: 1181 | Votes: 1 | Rating: 3 ]
- Moxon Mania - Building the Ultimate 4-Band Moxon Antenna
- The article details the design and construction of a four-band Moxon beam by a radio amateur. The beam, mounted atop a rooftop tower, aimed for gain over a dipole on 20 meters, cost under $500, and included additional bands. The design features fiberglass spreaders, four bands (20/15/10/6 meters), and a single feedpoint. The construction involved computer modeling, NEC source code, and specific dimensions. The article outlines the assembly, materials, and tuning process, including in-situ adjustments for optimal performance. Despite initial challenges, the beam improved signal strength and facilitated contacts on multiple bands, marking it as the best HF antenna the author has owned.
[ Hits: 94 | Votes: 0 | Rating: 0 ]
- OCF Dipole
- This is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It is a dipole fed off center with a 4:1 current balun at the offset feedpoint. The antenna shown covers 80, 40, 20 and 10 meters with 15 meters and WARC bands
[ Hits: 2558 | Votes: 7 | Rating: 9.43 ]
- Homebrew an OCF Off-Center Fed Dipole Antenna
- This type of antenna is a popular antenna design as the performance is very good across the HF bands and requires little or no tuning. It’s a dipole fed off center with a 4:1 balun at the offset feed point. The antenna shown covers 80, 40, 20 and 10 meters. The formula can also be used to adjust the overall length to cover more or fewer bands and the resulting overall length. 160-10m, 80-10m or 40-10 meters depending on your available space. Other bands will require a tuner.
[ Hits: 194 | Votes: 3 | Rating: 6.67 ]
- Build this Vertical Portable HF Antenna
- An experimental prototype of an asymmetrical hatted vertical dipole antenna that can work on HF bands 20 to 10 meters band. The AHVD Vertical dipole is an upside-down T design
[ Hits: 373 | Votes: 3 | Rating: 9.67 ]
- Multiband HF Dipole
- A 40 ft vertical dipole antenna that can cover HF Bands from 80 to 10 meters winding a dipole in a 12m HD telescoping fiberglass pole
[ Hits: 3118 | Votes: 7 | Rating: 6.43 ]
- W3DZZ Multiband Antenna
- An easy to build and extremely high performance antenna, works perfectly on all HF bands 3.5-28 MHz with some compromises, it is basically an half wave dipole for 40-80 meters, an LC circuit or trap 40 meters allows you to use a single radiating element.
[ Hits: 463 | Votes: 3 | Rating: 7.67 ]
- HF Beam Calculator
- A javascipt online calculator for 2 and 3 element beam antennas.
Just input frequency and will diplay element dimensions and spacing. Measurements in Feet and Meters by G4VWL
[ Hits: 3438 | Votes: 27 | Rating: 5.45 ]
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