I’ve been wanting to build an antenna for radio direction finding (RDF) for a long time. I finally got the motivation to build one, so here are a couple pictures of the design from the ARRL Antenna Book. For pictures and more explanation from my build, check out the Projects Page.
Here is the design schematic.
Here is the matching section where the coax connects to the driven element.
It was a lot of fun to build and very easy to do. I recommend it for anyone interested in RDF or who needs a portable yagi for anything (including satellite work)!
To view more about the project, check out the specific Project page, called Tape Measure Yagi.