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Demonstrated is how an antenna pattern could be plotted by using a receiver (or RTLstick and SDRsharp), Spectran (with log possibility) and a beacon.
In this episode we explain the basics of antennas and gain, how to understand radiation patterns, and why they are so important when choosing an antenna.Want...
28 kwi 2023 · A hilltop is often the best choice (and certainly the only choice for SOTA operation!) but sloping ground and drop-offs a wavelength or two distant from the antenna can lower your signal’s elevation pattern dramatically compared to flat ground.
10 lis 2023 · Peter G3OJV, goes over the basics of short wave signal propagation. ...more. Short Wave Radio Signals often have a long ride before they reach their final destination. Mother Nature does its...
The antenna radiation pattern strongly depends on the length and height. In the examples below I hope to make the differences clear.
20 kwi 2003 · Following is a series of dipole radiation pattern plots, produced by a popular antenna modeling program. The first plot below shows a dipole at an elevation of two wavelengths above a standard earth ground model. Note the multiple lobes at varying elevation angles above the horizontal.
We will discuss the different types of antennas commonly used by amateur radio operators, including wire antennas, vertical antennas, and Yagi antennas. Additionally, we will explore the key factors to consider when selecting an antenna, such as frequency range, gain, and radiation pattern.
