lf antenna

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Half-Wave 17 Meter Rotatable dipole - The K7EFX Multiband 3-Half-Wave 6-Meter, Half-Wave 17-Meter, Rotatable Antenna
[ Hits: 939 | Votes: 3 | Rating: 1.33 ]

60 Meter EF-HW antenna - 60 Meter End Fed Half Wave Antenna Tuner with large pictures of the 5 MHZ antenna tuner
[ Hits: 565 | Votes: 5 | Rating: 9.4 ]

80m Limited Space Antenna - 46ft multi-band antenna for small gardens. Works well on 80m. An excellent DX performer and is an ideal replacement for your half size G5RV
[ Hits: 4136 | Votes: 5 | Rating: 6 ]

The Short Dipole - There are several ways to reduce the length of a dipole and still use it as an effective antenna. Remember it is the electrical length that determines resonance. The physical length can be considerably less than a half wave length on your desired frequency as determined by 468/f MHz.
[ Hits: 203 | Votes: 0 | Rating: 0 ]

Multiband end fed antennas - This is a 200 Watt PEP step up transformer for end fed full and half wave antennas without radials, designed as a 200 Watt PEP
[ Hits: 2274 | Votes: 9 | Rating: 7.32 ]

QRP Multi-band EFHW antenna for SOTA - Link End Fed Half Wave Antenna and Tuner for SOTA designed to work on 15m, 20m, and 40m.
[ Hits: 1537 | Votes: 4 | Rating: 5.75 ]
Yet Another EFHW Matcher - An end-fed-half-wave antenna matcher project based on a FT-82-43 core with a 100 pF and 45 pF capacitor in parallel
[ Hits: 700 | Votes: 3 | Rating: 9 ]
End-Fed HalfWave Matching Unit for SOTA operations - An end-fed half wave antenna matching unit made of 3:24 turns ratio on a FT140-43 toroid with a 150pF capacitor across the input.
[ Hits: 259 | Votes: 0 | Rating: 0 ]
End Fed Half Wave Antenna Coupler - A home made end-fed half-wave antenna coupler with antenna lenght calculator and counterpoise calculator based on center frequency. Includes pictures and drawings along to antenna homebrewing instructions with a home made on air wound transformer
[ Hits: 282 | Votes: 0 | Rating: 0 ]

Half Wave Fan Dipole Antenna - Amateur Radio 40m 20m 15m Half Wave Fan dipole antenna project with part list, pictures and drawing. Includes the option to expand the antenna to cover the 80 meters band
[ Hits: 684 | Votes: 1 | Rating: 1 ]

Improving the Super-J - The collinear J-Pole, often known as the Super-J, does improve the behavior over a regular J-Pole. As many attest, there is an advantage when vertically combining 1/2 radiating sections to have a bit of separation between the half-wave end points. The Super-J has very little separation between the two half-wave radiators.
[ Hits: 972 | Votes: 2 | Rating: 5.5 ]

Portable wire antennas - This document describe serveral wire antennas, from the folded dipole, to the common halfwave monoband antenna for those who want to make HF portable operations in holiday.
[ Hits: 846 | Votes: 2 | Rating: 1 ]

Antenna Safety - Elevated Work Platforms - Accessing antennas at great height poses many potential safety hazards. Essentially, climbing ladders or scaling towers, regardless of whether or not a commercial safety harness is fitted, is risky business indeed particularly for those hobbyists in their latter years or not as physically capable as others.
[ Hits: 289 | Votes: 0 | Rating: 0 ]

ZigZag Antenna - VHF/UHF unconventional antennas - An unconventional antenna family, the VHF/UHF Zigzag Dipole Antennas. Design, theory and practical construction, transformation and balancing with a half wave balun.
[ Hits: 746 | Votes: 2 | Rating: 8.5 ]
DIY Dual Band 144-440 MHz vertical antenna - A homemade VHF/UHF vertical antenna made essentially with RG58 coax cable, with a 9 turns choke balun to prevent the shield acting as a RF Radiator.
[ Hits: 1377 | Votes: 14 | Rating: 5.5 ]

The C-Pole Antenna - C-Poles for 20m and 6m, it is a folded half-wave dipole with an asymmetrical tapped 50-Ohm-point in the lower part of the antenna. Design hints by DK7ZB
[ Hits: 933 | Votes: 47 | Rating: 8.3 ]

Basic Wire Antennas Part I - A presentation of popular wire antenna models like Dipoles, half size, full size, doble zepp, ocf dipoles, G5RV
[ Hits: 1653 | Votes: 0 | Rating: 0 ]
HF Wire Antennas for Field Day - Dipole antennas, vertical half-wave dipole antennas with impedence tranformes that can be used for portable operations. Some well worn antenna configurations are the easiest and loudest lash-ups you can try.
[ Hits: 220 | Votes: 0 | Rating: 0 ]

Portable Amateur Radio Operations - The main issues with portable HF operations have become not issues of the transmitting and receiving equipment itself but of providing power and antennas
[ Hits: 497 | Votes: 2 | Rating: 5.5 ]

Analyzing 6 handheld antennas with a VNA - In this article the author analyze six different type of VHF handheld antennas and as result of his self training on his new vector network analyzer published this interesting report
[ Hits: 408 | Votes: 1 | Rating: 1 ]