vertical
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Antennas : 160M- 160m portable vertical antenna
- The Shoddytenna is a 160 meters band vertical antenna intended for portable use. This antenna takes just 15 minutes to erect on site, can be carried by hand and is ideal for local groundwave work.
[ Hits: 380 | Votes: 0 | Rating: 0 ]
- 160m Kite Vertical Antenna
- An essential kite antenna plan for the top band, Antenna has been tested at half wave and quarter wave.
[ Hits: 261 | Votes: 1 | Rating: 10 ]
- Vertical Dipole Antenna for 14 MHz by G3PND
- An home made vertical dipole antenna made with simple material. The antenna has a total length of aproximately 16 feet. In this article appeared on June QST 2019, the author explain how he reached the optimal confirugation changing and adjusting the lower part of the antenna, trimming and spacing correctly the copper wire. PDF File to downloas
[ Hits: 1219 | Votes: 3 | Rating: 4 ]
- Vertical Antenna for 30 meters band
- Homebrew 30 meter full quarter wave vertical antenna.
[ Hits: 579 | Votes: 1 | Rating: 7 ]
- Delta Loop DX Antenna for 40 meters band
- A monoband delta loop antenna for the 7 MHz. This vertically polarized DX Antenna is a full wavelength sngle side antenna and has a total length of 42.3 meters (137,1 inch) Can be easily setup with a flag pole or fishing pole as center top mast. For optimal performance lower side should be at 2 meter above the ground. This antenna offers a low radiation angle and 1 DB Gain.
[ Hits: 431 | Votes: 3 | Rating: 6.33 ]
- A very efficient half size 40 meter Vertical Antenna
- A vertical antenna project for the 7MHz made with some spare parts. Based on a broken 20 foot fishing pole, it is based on a good ground system made with radials and a capacitive hat done to increase the global radiation resistance of the antenna. A custom loading coil is also included in this project to perfectly tune the antenna to the CW portion of the 40 meters band.
[ Hits: 735 | Votes: 4 | Rating: 8.5 ]
- 6m and 4m Vertical Dipole Antenna
- The two dipoles are parallel with a distance of 12 cm and are also fed in parallel.
The total length of the 4 m dipole is 208 cm and the 6 m dipole is 280 cm.
[ Hits: 319 | Votes: 6 | Rating: 8.17 ]
- 50MHz / 6m J-pole Antenna by VK4ADC
- The J-Pole is an easy-to-build and inexpensive device that provides an omni-directional vertically polarized antenna without the need for a ground plane. In technical terms, it is an end fed vertical 1/2 wave which is fed via a 1/4 wave matching stub.
[ Hits: 439 | Votes: 4 | Rating: 6 ]
- Simple 50MHz J-Pole Antenna EA7AHG
- Based on the popular DK7ZB simple 50 MHz Jpole antenna, this customized jpole project has been analized with MMANA-GAL and reproduced for six meters, two meters and 70 cm bands.
[ Hits: 278 | Votes: 1 | Rating: 4 ]
- 80 Meter Shortened Ground Plain Antenna
- This antenna is a vertical loop antenna mounted on a 8 meters high grounded mast with an input impedance of 50 Ohms without a matching device
[ Hits: 443 | Votes: 1 | Rating: 5 ]
- Top Loaded Vertical Antenna for 80 Meters Band
- Top Loaded Vertical Antenna 3,5 MHz 80m and a 14 MHz Trap for the 20m band. The weight of this portable vertical antenna is less than 1 kg, including the ground network. The weight of the telescopic fiberglass fishing rod is another 1kg. The rod expands from 1.5 meters to 8 meters.
[ Hits: 268 | Votes: 0 | Rating: 0 ]
- 50:450 Ohm (9:1) Balun for vertical antennas
- A page describing how to home made a custom 9:1 balun for a common portable wire antenna. The author suggest to use 4C65 or FT140-61 toroids instead of the common Amidon T200-2
[ Hits: 516 | Votes: 11 | Rating: 6.72 ]
- 9 Circle RX antenna
- The receiving antenna setup for the top band, made with a 9 elements vertical antenna array, remote controller and remote relais.
[ Hits: 435 | Votes: 0 | Rating: 0 ]
- Taming the Quadrifilar Helical Antenna
- The Quadrifilar Helical antenna provides circular polarization and complete hemispherical reception, which is precisely what is needed to receive the polar orbiting weather satellites, and as a 2 meter antenna it will receive horizontal, vertical and clockwise circular polarization.
[ Hits: 374 | Votes: 0 | Rating: 0 ]
- Optimizing Ground Radials in End-Fed Antennas
- An interesting article focused on defining the optimal lenght and number of ground radials in vertical, inverted-L, end-fed antennas. This article compares also the radial length vs number of ground radials to power loss in transmitted power.
[ Hits: 432 | Votes: 1 | Rating: 10 ]
- Field Day Vertical Antenna by KN5L
- This Field Day Vertical Antenna project is the result of many years of attending various field day sites and realizing that what was needed is a simple, easy to assemble vertical antenna. The design of this Field Day Antenna is not very novel and leverages ideas from Butternut verticals and ARRL publications. The one essential requirement was that the antenna can be raised by just one person. The design of this Field Day Antenna is an above ground mounted ground plane vertical.
[ Hits: 213 | Votes: 3 | Rating: 7 ]
- Homebrew 5/8 Wave HF Vertical Antennas
- The advantage of 5/8 wave antenna is that it has the lowest angle of radiation and has about 1dB more gain when compared to 1/4 and 1/2 verticals. So the 5/8 should be the favourite choice for DX.
[ Hits: 712 | Votes: 2 | Rating: 8 ]
- MSL - Mechanical Systems Lehmann - Telescopic Masts and Towers
- Specialist for vertically adjustable supporting frameworks including telescopic masts and telescopic towers for ham radio systems, lighting systems, measurement techniques, observation systems. Located in Gnaschwitz Germany
[ Hits: 201 | Votes: 0 | Rating: 0 ]
- Challenger DX Antenna Review by NK7Z
- A review of the GAP Challenger DX Antenna that is not a traditional 1/4 wave vertical, but is a vertical dipole, this gives it several advantages over a standard 1/4 wave vertical, mainly the reduced number of radials, with excellent performances.
[ Hits: 220 | Votes: 2 | Rating: 10 ]
- Antenna Calculation Software
- The program consists of tabbed pages for various antenna and transmission line calculation. You can compute the values for an inverted L network that will allow you to match the 50 ohm output of the radio, or you can compute the necessary length in the units of choice for a 5/8 wave vertical for 10 meter band.
[ Hits: 434 | Votes: 1 | Rating: 10 ]
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