As all of us know, there are plenty antenna solutions in books and on the market today. Many manufactures promise with unexpected and excellent results. But don’t be a fool and too much attracted with these results, from time to time, the simplest antenna setup could be well enough, and also cheap to build. A project, this is what amateur radio is all about!
The End-Fed antenna is well known to be a good antenna choice for a fair result you could expect from it. Many of us use it for it’s ease deployment. It is also very easy ton build. The heart of this antenna is the UNbalanced to UNbalanced adapter with a transformation ratio of 9:1, commonly called an UN-UN 9:1. Take a look at my previous post for more details on “How to build an Un-Un”.
So by example, you could expect to bring down an impedance of 450 Ohm to 50 Ohm very easily. I will not talk about the loss and other consideration…. just keep all this simple please. 🙂 My actual End-Fed antenna setup consist of 35 feet of wire, called the radiator, and 25 feet of coax cable. The Un-Un is just in between. This antenna setup will perform well on band higher than 20m, let say between 20m thru 6m.