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Antennas : 20M : 20 meter Dipole Antennas
- VK5AH -HF 4 Bander dipole
- A multiband 80-40-20-15 meters dipole wire antenna that can be extended to cover 160 meters too.
[ Hits: 52315 | Votes: 21 | Rating: 6.9 ]
- ZR6KMD 2M Beam Antenna
- This design was adapted from an article in the ARRL Handbook and built with simplicity and
duplicity in mind. This antenna is a vast improvement over a standard dipole with a forward gain of around 8db with a front to back ratio of 10db.
[ Hits: 2057 | Votes: 1 | Rating: 2 ]
- Coax cable dipole antenna for 10 Mhz
- Coaxial Cable Dipole for 30 meters band by I2NDT with detailed pictures of his dipole antenna setup.
[ Hits: 8986 | Votes: 3 | Rating: 5 ]
- Stealth Multiband Vertical
- A vertical antenna for 40 and 80 meters band, using a telescoping fiberglass fishing pole.
[ Hits: 50259 | Votes: 16 | Rating: 5.88 ]
- 6M Square Copper Dipole
- Here is the parts list and dim. sheet for a 6m Square Copper Dipole, made from copper water pipe
[ Hits: 3591 | Votes: 2 | Rating: 5.5 ]
- Antena Bazuca
- Drawings and short descriptio in spanish for dipoles and bazooka antenna.
[ Hits: 7001 | Votes: 33 | Rating: 5.17 ]
- 20 meters Cage Dipole
- Cage Dipole is based on the fact that a wireframe does emulate a tubing of the same diameter, supposed that the wires in the frame are close enough to resemble a solid surface.
[ Hits: 12299 | Votes: 6 | Rating: 5.33 ]
- Inverted Vee calculator
- Online calculator for dipole and inverted vee antennas
[ Hits: 2393 | Votes: 2 | Rating: 7 ]
- A Stealthy 75 meter antenna
- The 75 meter dipole at K7ZB was put up to meet the need for making contacts with friends in the Southwest and Southern California. As usual, it had to be put up so no one can see it from the surrounding neighborhood.
[ Hits: 13397 | Votes: 3 | Rating: 4 ]
- This Old Dipole
- An antenna construction workshop conducted at Marshall N1FN's QTH
[ Hits: 11589 | Votes: 6 | Rating: 7.17 ]
- Mirrored J-Pole
- The mirror-image J-Pole is very easy to construct and requires only two T-Fittings plus a length of copper pipe.
[ Hits: 4038 | Votes: 3 | Rating: 4.67 ]
- Building A 2-meter J-Pole Antenna
- Buildin a VHF Jpole antenna with detailed pictures
[ Hits: 4102 | Votes: 7 | Rating: 6 ]
- Magnetic Loop Antenna
- Although a magnetic loop antenna(aka small loop antenna) is very compact, its efficiency is close to a half-wavelength dipole if carefully built.
[ Hits: 1437 | Votes: 1 | Rating: 10 ]
- Fundamentals of Off-Center-Fed Dipoles
- Off-center-fed dipoles (OCFs) are 1/2-wavelength wire antennas fed at neither the center nor the end, but somewhere between--off-center
[ Hits: 4194 | Votes: 0 | Rating: 0 ]
- Idiot's guide to antennas
- A very basic guide to antennas concept. Explain the usage of dummy load, basic antennas like dipole o j-poles.
[ Hits: 1270 | Votes: 1 | Rating: 10 ]
- Common vhf amateur radio antennas
- Plans and drawings of common amateur radio antennas, like jpoles, copper cactus, super jpole, omnidirectionals and quads
[ Hits: 2018 | Votes: 2 | Rating: 9 ]
- RippleTech Electronics
- Wide bandwidth Trapped Verticals and rotary dipoles, baluns, 40m/80m wire dipoles and accessories from Australia.
[ Hits: 1152 | Votes: 3 | Rating: 10 ]
- Located in France, DXBeam designs and manufactures a range of monoband, dual band and triband antennas, rotary dipoles, Moxons and Yagis
[ Hits: 2489 | Votes: 10 | Rating: 2.8 ]
- KB3KAI Portable Roll-Up 2-Meter J-Pole Antenna
- The twin-lead portable rollup J-Pole antenna, assembled and ready for deployment
[ Hits: 642 | Votes: 2 | Rating: 8 ]
- Near-Real-Time F2-Layer Critical Frequency Map
- This map can be used to determine the frequencies that will always be returned to the Earth. Transmitted frequencies higher than the indicated contours (which are given in MHz) may penetrate the ionosphere, resulting in lost power to space.
The map shows the radio auroral zones as green bands near the northern and southern poles.
[ Hits: 5015 | Votes: 22 | Rating: 5.1 ]
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