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• Transmission Lines - Whenever you choose a coax feedline, the frequency of operation is a very important consideration. Over the operating bandwidth of the coax the VSWR is low, typically 1.2:1 or better. Insertion loss is also an important parameter. It is usually specified in dB/foot and is a linear relationship.
  [ Hits: 1274 | Votes: 0 | Rating: 0 ]
• Low loss Japanese coaxial cable - 5D-FB,8D-FB,10D-FB cables offer very low attenuation comparable to that of famous Andrews' Heliax and 8D-FB is almost half that of standard RG-213 for an equivalent diameter!
  [ Hits: 989 | Votes: 2 | 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 ]

• Omega and Gama Matching - Article about omega and gamma matching, related to bandwidth, loss and component failures, heating and power ratings
  [ Hits: 3286 | Votes: 3 | Rating: 7 ]

• 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 ]

• NASA Online VLF Receiver  ^pop - Hear VLF audio from NASA online VLF radio receiver in Huntsville, Alabama.
  [ Hits: 26455 | Votes: 94 | Rating: 4.36 ]
• Radio Meteors-NASA Alabama - Icom PCR 1000 at NASA Marshall Space Flight Center monitoring meteor signals on 67.3 mhz.live.
  [ Hits: 4861 | Votes: 7 | Rating: 4.29 ]

• Times Microwave Systems - Manufacture LMR Flexible low loss coax cable, connectors, and cable assemblies for Wireless Communications applications.
  [ Hits: 1234 | Votes: 1 | Rating: 6 ]

• Ham dictionary of terms - Glossary of common ham radio terms, available in english and also in italian
  [ Hits: 4264 | Votes: 14 | Rating: 6.42 ]

• Basics of Radio Wave Propagation - Exaustive introduction to radio wave propagation, includes a very detailed glossary on common propagation terms, composed by AE4TM.
  [ Hits: 4719 | Votes: 27 | Rating: 7.57 ]

• Sunspots explained - History, activity, glossary and modern reseach about suspots
  [ Hits: 1349 | Votes: 2 | Rating: 3.5 ]

• 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 ]

• AEA - Wireless software - AEA Wireless Director Software Series turns PC's (running Windows 95/98/2000/ME or NT) into powerful tools that expand the use and power of SWR, Return Loss and Complex Impedance Analyzers.
  [ Hits: 2725 | Votes: 6 | Rating: 5 ]
• 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 ]

• DF9CY Project Auriga - PA is a JAVA software package containing several programs, SW/VHF/UHF Logbook (imports format from RADIOMAN, VMT), Log conversion to HTML format, Import and export functions for RADIOMAN, CT RES files, BV QSL Labels, CSV etc. Internet DX-Cluster support, Keeps track of your worked Callsigns, Checks your worked Grid Squares per band, Databases for worked Grids and Callsigns Uses K1EA CQWW.CTY country file, Easy command line version for terminal operation Moontracking as clock, Pathloss calculation
  [ Hits: 1871 | Votes: 0 | Rating: 0 ]

• Pathloss Calculation and EME - Java free space pathloss calculation and EME
  [ Hits: 2506 | Votes: 46 | Rating: 4.99 ]

• Coaxial Cable & Power Handling - This calculator can be used to estimate the attenuation (dB loss), power handling capability, and transmission efficiency for some of the more popular Wireless Communications and MIL Spec cables at the frequency of interest
  [ Hits: 1183 | Votes: 8 | Rating: 8.17 ]

• Coaxial cables attenuation charts - Coaxial cables attenuation chart
  [ Hits: 2131 | Votes: 13 | Rating: 4.08 ]

• Making printed circuits - To make smart looking PCB's, all you need is a computer, a laser printer, copper clad board, etchant, a clothes iron and some Epson glossy photo paper.
  [ Hits: 863 | Votes: 3 | Rating: 5.67 ]

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