WebSep 20, 2024 · Tuning my EFHW Antenna - Ham Radio - TheSmokinApeCheck out my Antenna Playlist: … WebMar 21, 2024 · Issues with high SWR on HF Kits EFHW 49:1 UnUn kit. I recently tried assembling a EFHW kit, and some problems came up in testing. I believe this is the kit; I bought it through ARRL: HF Kits website. This is my first time making an UnUn and EFHW kit. For this I have a nanoVNA running 10 segment sweeps on the UnUn with two gator …
Tuning an End Fed Half Wave for POTA - YouTube
WebThe losses in the range of 2-10% (~0.1-0.5dB) of our transformers compared to other various similar ones with losses of 15-35% (~0.7-2dB) makes a MyAntennas.com (Euroxpress Corporation) a worldwide leader in the design of very complex high power/ high ratio/wideband RF transformers. Such transformers as our latest MEF-330-1K-Plus used … WebMay 1, 2024 · A Brief Synopsis of the Antenna Features & characteristics In this article, I will try to cover various aspects of the End-Fed Half-Wave (EFHW) wire antenna including, … multi colored gold leaf
EFHW - SOTABEAMS
WebCurrent Weather. 11:19 AM. 47° F. RealFeel® 40°. RealFeel Shade™ 38°. Air Quality Excellent. Wind ENE 10 mph. Wind Gusts 15 mph. WebProblems With End Fed Half Wave Antennas •#1 Problem: Common mode currents on feedline •RF in shack •High noise levels on receive •Feedline and grounding can affect SWR and tuning •Isolating the feedling from the antenna can be difficult, even with a common mode choke •High voltages, even at low power •FCC RF exposure limits can be … WebThe coil is just 12 turns of wire wrapped around a 0.7 inch diameter tube, located about 6 feet past the antenna's feedpoint. I think the idea is to begin by tuning 40m operation, adjusting the wire length as needed. Once that's done, the instructions say "adjust the coil as necessary" to bring the other bands into resonance. multi colored glow sticks