WebA special case of this, is the End-Fed Half-Wave (EFHW) antenna. Obviously, an EFHW antenna has a "half-wave" length only at one specific frequency. ... e.g., by 1 mtr (3 ft). Just fold back the excess and attach it onto itself. See photo below. Standard approach for tuning-and-pruning the antenna is to start with the band where the antenna ... WebTrying out my homebrew end fed half wave antenna. 49:1 transformer into 132 ft or so of wire. Couldn’t get it up very high but enough for initial tests
EFHW 80m extension - MI0KXX
WebCurrent Weather. 11:19 AM. 47° F. RealFeel® 40°. RealFeel Shade™ 38°. Air Quality Excellent. Wind ENE 10 mph. Wind Gusts 15 mph. 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. plu saint joseph 50700
Tuning my EFHW Antenna - Ham Radio - TheSmokinApe
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 … WebJul 20, 2024 · Engineering the EFHW 49:1 Transformer and Antenna. on July 20, 2024 July 20, ... I ran some SWR sweeps with just the bare wire and various configurations of small coils to act as band-tuning … WebJun 27, 2024 · EFHW Sloping EFHW Inverted-V All of these antenna configurations have a feedpoint around 40 feet from ground. Lower elevation means poorer results on 80, 40, 30 and 20 meters. Never-the-less the antenna will make contacts with just about any way of stringing it up. I know because I use one with my motorhome because it is easy to deploy. plu saint just malmont