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Let's Build an EFHW Antenna. If you attended Field Day 2022, you may have been one of the students that learned how to build an end fed half wave Antenna and actually got to build one and take it home. For those that were not able to do so, this page is for you.
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
An 80-10 end-fed half-wave antenna can be a very good performing part of an HF station. But its performance depends heavily on a well-designed and carefully constructed 49:1 unun, which matches the long wire impedance to within tuning range of operation. But the perfor-mance of an end-fed antenna is also very dependent on height above ground.
4 sie 2020 · What is an EFHW? 1/2 wavelength long antenna, fed on the end. Can be vertical or horizontal (or both). Can be tuned and limited to a single band. Matching is done by a parallel LC network. Can be fed with a 1/4 wave ladder line, but will be single banded. Can be fed with a broadband high-impedance transformer for multi-band use.
To help new hams prepare for the exciting world of HF opening up during Cycle 25, ARRL has partnered with HF Kits to bring you this easy-to-build four-band antenna kit: an end-fed half-wave (EFHW) antenna.
15 paź 2022 · Field expedient antennas differ from home-based, permanent antennas. At a home QTH there is often plenty of room to install a larger, higher antenna. In the home shack, the radio is often capable of putting out a much more powerful signal than a field radio.
The EFHW antenna is one of amateur radio’s oldest antenna designs. EFHW stands for “End Fed Half wave” and was first introduced way back in 1927 by the Austrian radio amateur, Dr. Josef Fuchs,
