Efhw direction
WebBelow are some photos of an experimental setup for 20m that helped me understand what is going on with end fed half wavelength antennas. I first adjusted the LC circuit using a … WebFeb 15, 2024 · With the antenna oriented along a N/S line it will cover pretty much everything from the northeast to the southeast and from the southwest to the northwest pretty much evenly. This allows coverage of Europe, …
Efhw direction
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WebDec 22, 2024 · With an EFHW the antenna resonates on all harmonic bands with a good match, so using a 40 or 80m version and adding wire to resonate on 160m will in effect parallel two antennas operating on the same bands and pull the feedpoint impedance down, plus you will have RF currents flowing in different directions at the same time causing … http://vtenn.com/Blog/?p=1089
WebAug 12, 2016 · End-fed wire antennas are a different beast. They are not a half-wavelength long, meaning that, if you choose the length of the radiator wisely, the impedance at the end of the wire will not be as high as the impedance of a half wavelength long wire. In many cases, the impedance can be transformed with the help of a 9:1 unun (unbalanced input ... WebEFHW Counterpoise. For the last few months, I have been operating a homebrew 40-10 EFHW that runs just above my roof. It’s my first HF antenna, and is a stealthy solution to my HOA restrictions. The UNUN I built has a connection for a counterpoise, but I didn’t attach one, so the 90 feet of coax that runs from the UNUN to my TS-590SG is ...
WebThe radiation patterns of an EFHW-8010 antenna varies with frequency; Dick Reid, KK4OBI provides a great presentation of 3D and 2D patterns for EFHW-8010 antenna in various … WebEast African Foundry Works (Kenya) EAFW. East Anglian Fine Weld (Huntigdon, UK) EAFW. Electronic & Auxiliary Fresh Water. EAFW. External Auxiliary Fresh Water. …
WebMar 26, 2024 · The EFHW with the same feed had a noise floor of S8! My attic 20m dipole is normally S4-S5 on the same band (tested at the same time). Both antennas have the nulls in roughly the same direction (N-S). I did some more testing. I listened on WSPR on 20m on both the random wire and the EFHW. The EFHW couldn't bring in any station further …
WebIn practice the impedance at the end of an end fed half wavelength antenna is on the order of 1800 to 5000 ohms. It is often commented that the End Fed Half Wavelength Antenna needs no "counterpoise" or radials to … sugarworks cake porterWebEFHW-8010-2K-Plus, 2000W Multi-Band End Fed Half Wave Antenna. Improved version of the EFHW-8010-2K, now with three large cores, 2.9-inch diameter, featuring just 0.5 dB Insertion loss 3-30MHz! ... The two antennas are oriented in the same direction and about the same length, so I think this is a good test. They are both about 25′ -30′ in ... pain wearing socksWebFeb 10, 2024 · Hi, been playing with antennas on my SOTA activations, in summer linked dipole, in winter a EFHW trapped for 3 bands. Now playing with random wire antennas so started with the 84 foot wire and the 17 foot counterpoise as mentioned in several books. Want to try shorter wires as put forward as useful lenghts i.e 71 foot and then 53 foot. … sugarworks beauty labWebCorporate. 100 Gateway Centre Parkway, Suite 210 Richmond, VA 23235 Main 804-205-5907 Fax 804-230-4605 Toll-Free 855-433-9669 Press 1: Home Delivery Press 2: … sugarwood wines \u0026 liquors store syracuseWebUnlike the dipole antenna, which is comprised of two quarter-wavelength wires and fed at its center, the EFHW is a half-wavelength antenna with the coaxial cable for your transceiver attached at one end. It has become … sugarwood wilmingtonWebSep 17, 2024 · Whatever it is it works surprisingly well...especially on 80m! I have added the NanoVNA charts. Today I also raised the lower end of the antenna up to about 7 feet above ground. Note, these are WITH the wires. And these are without the wires: 3.9 to 29MHZ WITHOUT wires 1.8 to 10.5MHz WITHOUT wires antenna efhw Share Improve this … sugarworks sugar structureWebThe key advantage of an end fed half wave is the single high support point with accessible feed and current maximum some distance away from the feed point. If you don't need … painweaver band classic wow