Twin Lead Emergency J-Pole

This is a handy antenna for temporary or portable use. It is easy to build and has some decent gain. It can easily be pulled into a tree to get maximum effect.

You will need:

1. 56 inches of cheap 300 Ohm twin lead.

2. 72 inches or more of 50 ohm coax.

3. Solder and soldering iron.

4. Electrical tape or better yet, shrink tubing.

5. String and means to hang it.

Cut your twin lead as shown in the picture below. Take care not to nick the wire where the coax will be connected, this will weaken the antenna connection. Cut the center conductor of the coax connection as short as possible making sure the longer shield connection won't touch it with normal use. Tape or epoxy helps to keep them from shorting out.

Tape or shrink wrap the coax to the bottom of the twin lead. The picture below is drawn to the side for visual simplicity. I have used a piece of a popsicle stick or plastic in the past to keep the two connections at the bottom seperated and reinforced under the tape or shrink wrap.



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