sw antennas

sw antennas

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• Online LInked Dipole Designer - The page for designing linked dipole antennas allows users to swiftly create a versatile multi-band antenna suitable for portable applications in outdoor settings, such as in the field or on mountain tops.
  [ Hits: 99 | Votes: 0 | Rating: 0 ]

• Beverage switch-box - A home made Beverage system for portable use. The goal was to switch between 4 single Beverage antennas without interfering on the other receiving stations.
  [ Hits: 115 | Votes: 1 | Rating: 8 ]
• 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 ]

• Loading of Short Antennas - An interesting article on loading short vertical monopole antennas, representing six different methods. Base loading, Center Loading, Top Loading, Continuous loading, half and half loading and capacitive top loading.
  [ Hits: 682 | Votes: 4 | Rating: 6.25 ]

• Fan Dipoles 10/15/20m and 12/17/30m - How to build Fan-Dipoles by DK7ZB. Experiences with various band combinations. Not all combinations are working properly. If the frequencies are to close together the impedances will lead to a very bad SWR. This happens with the bands 10-12-15m or 15-17-20m.
  [ Hits: 488 | Votes: 2 | Rating: 9.5 ]

• 20m Indoor Loop Antenna - This antenna can gets you on the air on 14MHz, and it has a useable frequency range. The VSWR is almost perfect at the centre-frequency abd the design uses no expensive components.
  [ Hits: 668 | Votes: 4 | Rating: 6.75 ]

• Short Antenna for 40-30-20 Meters Band - This page describes an entirely simple, One-Knob matchbox that will match this antenna efficiently on 40, 30 and 20m, using a simple circuit that can be switched between series-resonant and parallel-resonant with just one banana jumper
  [ Hits: 237 | Votes: 1 | Rating: 7 ]

• The Swiss Quad Antenna - Rotatable Antenna with Phased Elements based on the orignal design concept of HB9CV antennas, is considered to have an higher gain than standard quad antennas. The Swiss Quad Antenna does not need any spreader or boom.
  [ Hits: 365 | Votes: 3 | Rating: 7.67 ]

• Antenna Measurements - Testing of real antennas is fundamental to antenna theory. The most common and desired measurements are the antenna radiation pattern including antenna gain and efficiency, the impedance or VSWR, the bandwidth, and the polarization. The procedures and equipment used in antenna measurements are described in this page.
  [ Hits: 61 | Votes: 1 | Rating: 10 ]

• AN-SOF - Professional Antenna Simulation - AN-SOF is a professional comprehensive software tool for the modeling and simulation of antenna systems. AS-SOF allows to describe antenna geometry, Choose construction materials, Describe the environment and ground conditions, Describe the antenna height above ground, Analize radiation pattern and front-to-back ratio, Plot directivity and gain, Analize input impedance and VSWR,Predict antenna bandwidth
  [ Hits: 242 | Votes: 2 | Rating: 10 ]

• Beverage Remote Switch  ^new - The author describes building a remote switch box to control the direction of two reversible Beverage antennas. The switch uses a buried cable and relays to select the desired antenna direction from the shack. The design is simple and uses common components.
  [ Hits: 37 | Votes: 0 | Rating: 0 ]

• The AntennaPi - This is a remote antenna switch I use in my attic to connect transceivers in the basement to multiple antennas in the attic. The goal of this project is to be able to remotely connect one of the antennas in the attic to the only antenna cable available.
  [ Hits: 133 | Votes: 0 | Rating: 0 ]

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