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14 sie 2024 · An EFHW (End-Fed Half-Wave) Antenna is a type of radio antenna commonly used in amateur radio. It is designed to be fed at one end, hence the name, and is typically half the length of the radio wave it is intended to transmit or receive.
3 paź 2024 · This calculator simplifies the process of designing an EFHW antenna, providing quick results for various amateur radio bands, and helping users build efficient antennas for their specific needs.
Dowiedz się, jak korzystać z kalkulatora antenowego EFHW, aby określić idealną długość anteny w oparciu o żądaną częstotliwość. W tym artykule przedstawiono przewodnik krok po kroku, odpowiedni wzór (L=468/f) i praktyczne przykłady.
15 lip 2024 · Using the EFHW Antenna Calculator is straightforward: Input Frequency (MHz): Enter the operating frequency of your radio equipment in megahertz (MHz). Calculate Length: Click the “Calculate Length” button to determine the recommended length of the EFHW antenna.
The End-Fed Half-Wave (EFHW) Dipole Wire Antenna By T. W. Longfellow, N7TWL June 2023 Let’s start with the obvious: The purpose of an antenna at the amateur radio station is to transmit and receive radio signals. The type and design of the antenna is based on any number of parameters: specifically, the frequency or
19 sty 2017 · To calculate the lenghts: a rule of thumb for a dipole wire antenna length is: dipole length (in feet) = 468 / f (MHz) So that will be 32.96 feet for a dipole on 20m (each leg 16.48 feet) and 65.92 feet total length for a 40m dipole.
You can choose to view any combination of the available charts and diagrams: these include four radiation pattern types: azimuth, elevation, 3D and polarization patterns; other options include VSWR charts, an antenna currents diagram, and a Smith chart.
