Forty years ago, the May-June issue of Elementary Electronics carried an interesting idea for a stealth antenna. While the article was aimed at SWL’s, the idea is equally intriguing for hams confronted with the need for a clandestine antenna.

I’ve operated with antennas hanging down from the side of a building. They’ve generally performed well, although depending on the type of construction, they often get out better in one direction. For short-term use, I generally just let a wire out through an open window and retract it when needed. The idea shown here automates the process a bit.

As you can see, the antenna itself consists of a Slinky®, mounted in a tin can just outside the window. To extend and retract it, it’s connected to an inexpensive fishing reel inside. To keep everything neat, there’s a piece of conduit running between the reel and the can. To deploy the antenna, you simply push the button on the reel. When you’re done with it, you simply reel it in. To keep prying eyes from noticing, the article recommends painting everything black.

Exterior portion of the antenna.

Interior view.

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