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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.
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Josh Johnston, KE5MHV Director of Emergency Management Email...
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Our EFHW 49:1 Antenna Kit is perfect for radio enthusiasts looking to build their own end-fed half-wave (EFHW) antenna. The kit includes a high-quality 49:1 transformer 50 meters of wire and an accessory pack, giving you everything you need to set up the antenna out of the box.
5 lis 2023 · His end-fed antennas are incredibly small, thus perfect for portable operations. They remind me very much of K6ARK’s end-fed wire antenna kits, but a little easier to build because the board is larger and there are no surface mount components.
3 dni temu · Thus, for many hams like myself, installing new antennas and repairing damaged existing ones is as much a fall tradition as football and pumpkin spice. ... Building the simple antenna was a piece of cake. I built the HFKits 49:1 EFHW transformer kit (also available from the ARRL) and cut a 66 foot piece of wire (roughly half the wavelength of ...
21 mar 2022 · This won't change the reported SWR but will fix the impedance. See this answer for some details on how this works. try your 100 ohm resistor on the VNA - connect it to the PL259 with your fingers or crocodile clips, it should show a small dot 3/4 of the way to the right of the Smith chart.
Kit includes everything you need to build a 49:1 end fed half wave antenna. Antenna works without needing a tuner on 10M, 15M, 20M & 40M with SWR ≤ 2:1 Easy to build! Just wind the toroid, solder a few joints, connect the wire, and you are on the air. There's also an easy to follow assembly video.
Here is the list of possible problems you might have experienced with EFHW antenna models: 1. Your SWR is elevated upon the first installation. *Check the Cables, connectors, lightning/surge arrester. *Make sure antenna is not touching objects or being very close to objects like the roof, siding, etc.
