about v antenna

about v antenna

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• 2 Element Wire Yagi for 10 meters band - A page with an embedded video about a two elements yagi antenna for 28 MHz based on the original antenna design by VE7CA
  [ Hits: 283 | Votes: 1 | Rating: 8 ]

• Transmitting Ferrite Loop for 80-160 - Article from 73 Amateur Radio Today about experimenting on ferrite loops transmitting loop antennas for 80 and 160 meters bands.
  [ Hits: 604 | Votes: 3 | Rating: 7 ]

• A Simple High-Performance Vertical Antenna - This article describes the details of the design, which can be easily scaled for just about any HF band. The antenna described in this article is for the 20 meters band.
  [ Hits: 666 | Votes: 3 | Rating: 9.67 ]

• 35 Element Yagi Antenna for 23cm - Antennas for the 1296 MHz based on the construction plans of some Yagis 35 elements by DL6WU, F9FT, DJ9YW. These antennas features a boom of about 3 m and gives a gain of about 17.8 dBd
  [ Hits: 210 | Votes: 1 | Rating: 7 ]

• Building a 40m Delta Loop Antenna - An experimento of a 40 meter delta loop antenna both in horizontal and vertical polarization and several elevation angles with interesting notes about the effect of the radial field under the antenna.
  [ Hits: 292 | Votes: 4 | Rating: 8.25 ]

• 80m Shortened Dipole Antenna - This antenna just requires about 24m of free space instead of 41m that a normal half wave 80m antenna needs to hang up. The so called loaded dipole uses a coil in every dipole arm to electrically lengthen the mechanical too short dipole arms. Every coil has an inductivity of 120 microHenry.
  [ Hits: 154 | Votes: 0 | Rating: 0 ]
• 80m Inverted-L 12m Spiderpole - An Inverted-L with its long leg sloping to the ground. It will still work very good, even if the horizontal wire has to be sloped diagonally to the ground, as long as you have enough horizontal space to keep it at about a 45 degree angle or more from the pole.
  [ Hits: 150 | Votes: 0 | Rating: 0 ]

• Reversible RG6 Beverage Antenna - A project about reversible unidirectional Beverage antennas plus a remote switching system conveniently controlled by the operator
  [ Hits: 185 | Votes: 3 | Rating: 7 ]

• A simple NonDirectional Antenna for 10 meter - This article is about a simple vertical end-fed-half-wave wire antenna for 10 meters that can be used in case of restricted space.
  [ Hits: 702 | Votes: 2 | Rating: 7 ]

• VE6LK Fan Dipole - Multiband dipole antenna working on 80-40-20-15m, a 3 element antenna, 15m being a 3rd harmonic of 40.
  [ Hits: 163 | Votes: 1 | Rating: 10 ]

• The Quarter-wave stub - The Quarter-wave stub can be used for many purposes. If it is left with an open end it can be used as a notch filter to attenuate certain frequencies. A quarter wave length of a transmission line can also be used as an impedance transformer, to know more about the Quarter-wave impedance transformer
  [ Hits: 136 | Votes: 1 | Rating: 8 ]

• Helical Antennas for 144 MHz - This article is about two excellent small helical antennas for the two meters band. With performance close to that of full sized antennas, these small helical antennas are low in profile but high in efficiency.
  [ Hits: 230 | Votes: 1 | Rating: 7 ]

• Quad Loop Antenna for 50 MHz - Building A Full-Wave Quad Loop Antenna for 6 Meters. This is an easy antenna to build and the materials cost about $15-20. It exhibits 1.8dB gain over a 1/2-wave dipole. Using an open-wire parallel feedline (commonly called ladder line) with an antenna tuner, it tunes up on the 10m band as a 5/8-wave loop as well
  [ Hits: 199 | Votes: 1 | Rating: 1 ]

• Portable magnetic loop antenna - A portable loop antenna, made with a 3 meter loop resonates with the chosen capacitor from just below 7MHz to about 28.300MHz which makes it usable on the bands from 40m to 10m.
  [ Hits: 167 | Votes: 2 | Rating: 9 ]
• A More Efficient Magnetic Loop Antenna - The idea behind this antenna was to use multiple conductors in parallel to reduce the resistance losses in the antenna , and thereby improve the efficiency.For a given magnetic loop antenna, doubling the number of conductors from one to two will typically increase efficiency by about a factor of two. There is a limit, and beyond three or four conductors further increases are small, and may not be worth the bother.
  [ Hits: 215 | Votes: 2 | Rating: 5.5 ]

• 13cm Bi-Quad Antenna - A homebrew 2.4 GHz bi-quad antenna for SOTA. Includes several pictures about assembling parts, a list of material and dimensions.
  [ Hits: 115 | Votes: 1 | Rating: 10 ]

• Portable HF Antenna Options - Article on portable HF antenna where author diverge about antenna efficiency versus size based on his personal experience on using HF antennas during portable operations
  [ Hits: 174 | Votes: 2 | Rating: 4 ]

• RX Loop antenna - This loop antenna is intended to be connected as an antenna for receivers that do not have a built-in antenna such as an HF set or an old tube radio. This square barrel is wound on a wooden frame. It consists of two windings that are galvanically isolated from each other, a main and a coupling winding. The diameter is about 40 cm.
  [ Hits: 60 | Votes: 0 | Rating: 0 ]

• ZS1II VE2EK Amateur Radio Blog - Amateur radio blog about Homebrew equipment,ham radio antennas, satellites, QO-100 operations, rf amplifiers, 2m ldmos amplifier, 70cm ldmos amplifier, 23cm ldmos amplifier
  [ Hits: 116 | Votes: 3 | Rating: 8.67 ]

• How to Ground an Antenna: aerial earthing - The antenna ground or earth system can be key to its operation whilst also being a key safety feature. This article is about grounding systems for antennas, covering different aspects of grounds made for antenna safety, or expressly for lightning or just to improve antenna performance, being ground an antenna component.
  [ Hits: 232 | Votes: 1 | Rating: 4 ]

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