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Because this discussion focuses on the end-fed an-tenna, let’s examine how to build a 9:1 unun for it, then explain the modification necessary for a 9:1 balun for a balanced target such as ladder-line.
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.
The inverted-L Rybakov 806 antenna The what? I’ve been looking for a good inverted-L antenna design that I could build, and hap-pened upon this version, which seems to have not only operator testimonials but technical data to support them. An inverted-L antenna is simply a vertical monopole (and therefore end-
This project assembles a 49:1 ferrite-core (“FT”) type #43 transformer that matches 50 ohm input to 2500 ohm end fed antenna. It is optimized for 3.5/7/10/14 MHz but will work reasonably well on all amateur bands from 80 meters thru 10 meters with a 135 foot length of wire and a short connection to ground.
The DXE-UN-43 DX Engineering Multi-Band Vertical UNUN built with proven Maxi-Core® Technology is a matching device specifically designed for application with non-resonant 43 foot tall vertical multi-band antennas. The DXE-UN-43 assures the best efficiency from your vertical multi-band antenna and transmission line/tuner installation.
Explore our comprehensive collection of antenna amplifier manuals, designed to enhance your TV and radio signal reception. Whether you're a DIY enthusiast or a professional installer, our easy-to-follow guides provide detailed instructions on installation, troubleshooting, and optimal settings.
In this 1:9 UnUn Manual, you will be helped step by step in the construction of the complete HF Kits 1:9 UnUn. Power max 600 Watts of PEP.
