prop view

prop view

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• Guanella 4:1 balun - This article reviews the proposition that a 4:1 current balun in the style of Guanella can be constructed with both pairs of windings sharing a common magnetic circuit.
  [ Hits: 3113 | Votes: 2 | Rating: 5.5 ]

• Microvert antennas by DL7PE - Progress in Design of Extremely Short Transmitting Antennas Short and still efficient, how is that possible? By Juergen Schaefer, DL7PE author of the MicroVert antenna concept. The MicroVert introduced in this document is an extremely short and hardly visible short-wave antenna with outstanding radiation properties
  [ Hits: 1951 | Votes: 5 | Rating: 7.5 ]

• Multiband Dipole - Interesting article on multiband fan dipoles. This article give an overview on designing this wire antenna, and planning a robust installation and proper feed line. Includes notes on setting up a commercial fan dipole antenna and on how diy your own.
  [ Hits: 1382 | Votes: 4 | Rating: 6.75 ]

• All About Antennas - A free five part series on antennas that covers many aspects of antennas, from radio wave propagation, to feed lines, type of antennas, connectors, adaptors and antenna switches by Bob Grove, publisher of Monitoring Times
  [ Hits: 1180 | Votes: 3 | Rating: 7.5 ]

• RSGB Band Plans and Information - The RSGB Band Plan is normally published annually in the February edition of RadCom and additionally reviewed mid-year. It is derived from the IARU Region 1 Band Plan taking into account any proposed national variations or special amendments, which are considered necessary by the relevant spectrum manager.
  [ Hits: 553 | Votes: 0 | Rating: 0 ]

• DXRING - Site for live internet DX and CB/Freeband chat, DX propagation tools, DSP software, Live DX chat and CB chat pages using Java client, radio review
  [ Hits: 2013 | Votes: 4 | Rating: 4.5 ]

• WinDRM - HF Digital Radio Mondiale - WinDRM is the hottest digital mode on HF today! Nothing else exists where you can transfer data at almost 1KB/s without using proprietary hardware. HF Digital Radio Mondiale allow fast data, pictures, and voice over a 2.5Khz bandwidth
  [ Hits: 18088 | Votes: 22 | Rating: 7.81 ]

• Meteor scatter or meteor burst communications - A summary, overview or tutorial covering the basics of Meteor Scatter or Meteor Burst Communications, a form of radio signal propagation often used at VHF.
  [ Hits: 449 | Votes: 0 | Rating: 0 ]

• Guide to Solar Activity for QRPer - Paul Harden NA5N has produced a superb guide to solar activity and HF propagation for the QRPer
  [ Hits: 1094 | Votes: 3 | Rating: 7 ]

• An introduction to HF Propagation - This article will help to unravel some of the mysteries as well as giving useful operating tips to maximize your chances of working that rare station
  [ Hits: 1639 | Votes: 7 | Rating: 8 ]

• On-Line HF Propagation Prediction - *One single page* gives you an immediate overview of current shortwave propagation conditions at your location.
  [ Hits: 14234 | Votes: 215 | Rating: 7.72 ]

• KN4LF LF/MF/HF Radio Propagation Theory Notes - Layman level explanations of "seemingly" mysterious LF MF and HF propagation occurrences.
  [ Hits: 776 | Votes: 1 | Rating: 10 ]
• Propagation and the Atmosphere - overview of radio signals and radiowave propagation and how different areas of the atmosphere affect radio communications.
  [ Hits: 388 | Votes: 2 | Rating: 9.5 ]
• What is Radio Propagation - RF propagation - Discover the key facts about what radio propagation is, the different types available and how they affect different frequencies.
  [ Hits: 198 | Votes: 1 | Rating: 10 ]
• An Introduction to HF Propagation - This article is designed to be an introduction to the terms and basic mechanics of propagation methods that are to be found on the HF and VHF bands.
  [ Hits: 1119 | Votes: 3 | Rating: 7 ]

• Sporadic-E propagation at VHF - This review of progress and future Prospects provides a practical guide for effective use of VHF sporadic-E propagation.
  [ Hits: 173 | Votes: 0 | Rating: 0 ]

• DX Activities of ONL5183 - Whith more than 20 years of ham practicen SWL Thierry LOMBRY, alias ONL5183, has written several technical pages about ham activities, including propagation, radio perturbations, radioastronomy, DXing, QSLing, ham-spirit, review of material and more. This very interesting website is completed by a large French section devoted to amateur astronomy illustrated with vivid colors pictures.
  [ Hits: 1065 | Votes: 3 | Rating: 6.33 ]

• 4NEC2 antenna modeler  ^pop - 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Can be interfaced to HFwin32 propagation prediction software.
  [ Hits: 30104 | Votes: 131 | Rating: 7.32 ]

• PropView - PropView is a free application that uses the included VOACAP, ICEPAC, and IONCAP engines to graphically display band openings between two locations over a specified 24 hour period. It can also build schedules for the IARU/HF beacon network and automatically QSY your transceiver to monitor each scheduled beacon.
  [ Hits: 12152 | Votes: 144 | Rating: 8.27 ]

• Low-Cost WSPR with Raspberry Pi and SDR - Using the Raspberry Pi to operate Weak Signal Propagation Reporter
  [ Hits: 1050 | Votes: 4 | Rating: 9.75 ]

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