Ham Radio End Fed Antenna with a 1:64 Matching Network I've made dozens of these transformers and thousands are sold under various name brands and you can use the same transformer with just a resonant 1/2 wavelength of wire for 10m. Here is a link to a more mainstream project that can cover 80 through 10m and more depending on the ferrite core size and mix. A 133ft wire will give you 80 through 10m and some of the WARC bands. That same wire will also give you 20, 15 and 10m without a tuner. For example a half wavelength of wire on 40m works out to about 64ft. Otherwise these transformers will tune a half wavelength of wire on any band from about 80 through 10m and that wire will also resonate and work great on harmonically related bands and without a tuner. For 10m only with one of these transformers, just calculate a half wavelength of wire for 10m, which is about 16 1/2ft, add maybe 6 inches, then trim for the best match. Here is a little more info on making transformers in the 49:1 to 64:1 impedance transformation range and why you would want to do this.Īn easy and fool proof method to match your end fed half wave on 10m is with a broad band transformer that steps 50 ohms up to the 2,500 to 3,000 ohm range and that can be done with a very inexpensive ferrite core. Of all your links the last one is the easiest to make but they deviated a bit from normal practice on making a 64:1 transformer. Is just making some loops in the coax a few times good enough? Do you think they are talking about a specific inductance in series? What type of coil? As you can see on the link, there is no specifics.
#EAGLE ONE ANTENNA MANUAL SERIES#
Adding a coil in series with the antenna at the base is one such method of matching." Here's the website I read it on design your own half wave vertical antenna and here's what they said: "A matching device of some sort must be added between the antenna and the feedline if you wish to feed it with coax. But one website I found says I can't feed a halfwave directly with coax, there must be a coil.
#EAGLE ONE ANTENNA MANUAL HOW TO#
So I know how to calculate length for a half wave. So I'm having a brainfart thinking "Why not make a half wave vertical out of it for 10 meters?" There's been some local rag chewing in the morning, having a vertical on 10 without worrying about radials or counterpoise would be nice. So I'm thinking "OK, what am I going to do with this?". - Vertical adjustment of the antenna: from 0° to 90°.So I won an Eagle One HF antenna in a raffle.īasically, for those unfamiliar with it, it's a telescoping fiberglass tube with a wire inside it, and a SO-239 mounted on the bottom.“3D” adjustment: the EAGLE antenna can be oriented along two axes:.
Thanks to its remote control, the EAGLE can be adjusted simply and rapidly
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