loss antenna

loss antenna

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• KE4UYP Linear loaded vertical antenna - This is a vertically and horizontally polarized antenna the Linear loaded 1/4 wave length vertical radiator introduces very little loss for 80 or 160 meters
  [ Hits: 13795 | Votes: 18 | Rating: 6.71 ]

• Trapped dipole for 80 and 40 m - This article explores a theoretical model for the losses of an 80m / 40m trapped inverted V dipole antenna system using a bootstrap coax trap, but does not examine the pattern of the antenna.
  [ Hits: 2731 | Votes: 0 | Rating: 0 ]

• VSWR Loss Calculator - This calculator is designed to give the efficiency loss of a given antenna, based on the input of VSWR (voltage standing wave ratio) and other subsequent factors
  [ Hits: 1868 | Votes: 9 | Rating: 2.45 ]

• Echelon-Log Beverages - About beverage antennas, Enhanced F/B Beverages, Bandwidth of Directivity, arrays. This article describes two phasing systems for Beverage antennas that improve directivity and cancel rearward signals. These systems use lossy elements and require minimal components to achieve broadband performance.
  [ Hits: 1860 | Votes: 1 | Rating: 10 ]

• Antenna Feed Lines for Portable Use - Why twinlead isn't necessarily a low loss feed line.
  [ Hits: 1532 | Votes: 2 | Rating: 10 ]
• Antenna Cable Loss and SWR - Calculate Cable Loss from SWR and reverse. Text file with only two simply formulas
  [ Hits: 2191 | Votes: 4 | Rating: 4 ]
• Better Feedline Loss Measurements with Antenna Analyzers - Various publications through the years have shown how the SWR measured on a shorted (or open) feed line can be used to calculate feed line attenuation
  [ Hits: 1922 | Votes: 2 | Rating: 10 ]
• Feeder Radiation - Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
  [ Hits: 1830 | Votes: 4 | Rating: 8 ]
• The Coaxial Line - Impedance matching, Transmission Lines, Characteristic Impedance, VSWR & Mismatch and Antenna Losses
  [ Hits: 888 | Votes: 0 | Rating: 0 ]

• Another vertical antenna for 30, 40 and 80 meters - This article is to describe a multi band DX-dedicated antenna offering a minimum of compromises (such as lossy traps), for the hams not having any high-support
  [ Hits: 4377 | Votes: 4 | Rating: 3.5 ]

• Types of Coax in Satellite operations - Coax is a very important part of a satellite station. It is almost as important as the antennas you choose. This article discusses choosing coaxial cables for satellite communication, emphasizing factors like line loss. It compares types such as RG-8, RG-58, Belden 9913/9913F, LMR-400, and hardline, highlighting their impact on signal preservation.
  [ Hits: 2397 | Votes: 1 | Rating: 9 ]

• Small antennas and radiation resistance - Small antenna, what causes loss and how to increase radiation resistance in small antennas., A description of loss and radiation resistance.
  [ Hits: 884 | Votes: 0 | Rating: 0 ]
• Trap antennas, coaxial trap, coax dipole antenna loss resistance - Testing and comparison of traps and trap antennas
  [ Hits: 3165 | Votes: 4 | Rating: 9.5 ]
• Antenna Efficiency - K0BG article con antenna efficiency covering topics like radiation resistance, coil losses and ground losses, other kind of losses. How calculate efficiency and Bandwidth Notes
  [ Hits: 458 | Votes: 0 | Rating: 0 ]

• Wire Loss and Antenna Gain - Discussion at eham about wire size used in wire antennas, and how it affects the gain of the antenna
  [ Hits: 847 | Votes: 0 | Rating: 0 ]

• Self supporting 80M Vertical - A self supporting vertical antenna for 80 meters by W9OY include pictures and construction details
  [ Hits: 2409 | Votes: 2 | Rating: 5.5 ]

• DirectionalWaveguide - Seattle Wireless - Waveguide antenna is a type of DirectionalAntenna and is a modified waveguide. A waveguide is simply a tube, either rectangular or cylindrical in cross-section, that will carry a microwave radio signal with very low signal loss
  [ Hits: 4983 | Votes: 3 | Rating: 6 ]

• Davis RF - DAVIS RF Co. has been in the business of supplying the staples of wire antennas for over 30 years. DAVIS RF Co. supply all coax cables, all connectors, ladder line, rotar control cable, insulators, and we have the largest selection of wire for wire antennas. DAVIS RF Co. is the designer and trade mark holder, and primary source for Bury-Flex Tm low loss coax cable. PolyStealth Tm high strength PE insulated antenna wire, and Flex-Weave Tm wire
  [ Hits: 2477 | Votes: 11 | Rating: 7.64 ]

• ERP Calculator Plus - ERP Calculator is an Amateur Radio software utility designed to perform a side-by-side comparison of two Ham Radio antenna systems. ERP Calculator comes pre-programmed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. ERP Calculator displays values of ERP, Antenna Power Gain, Antenna Feed point Power, Antenna System Gain in dB, Antenna Gain in dBd, SWR Attenuation in dB, SWR Power Attenuation, Coax Loss in dB, and Coax Power Loss
  [ Hits: 3002 | Votes: 9 | Rating: 5.11 ]
• Smith Chart Software - SimSmith is a highly interactive, real time Smith chart graphing program. Circuits are constructed using drag-n-drop. Load files can be imported from the EZNEC and CocoaNEC antenna simulation software and from the AIM4170 and miniVNApro antenna analyzers. Circuits and load files can be of any size. Key Features: SimSmith is one of the few Smith chart packages which models transmission line losses. SimSmith also allows the description of circuit elements using algebraic equations. SimSmith has only one screen and allows the screen to be resized to increase workspace or readability.
  [ Hits: 1574 | Votes: 6 | Rating: 6.5 ]

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