Before I start, a warning … this isn’t a step by step tutorial on how to make a slim jim antenna, it’s just an insight into how I made mine. I’ll include links to sites and resources where you can get detailed information as I go along.
I think it’s safe to say this is a pretty basic, omni-directional antenna. It’s certainly cheap and easy to make but, like all antennas, you need to keep your dimensions pretty accurate as the relationship between the effective length of the antenna and the wavelength of the signal you want to receive is critical to its operation (even more so with antennas that are used to transmit as well as receive … who remembers messing with SWR meters on their CB radio setup!).
If you haven’t already, swing by the HackSpace website, download yourself a free PDF copy of issue 18 and ‘turn’ to page 110 for a full article by the now almost legendary Mr Jo Hinchliffe! There you’ll find a full list of materials, a proper step-by-step construction guide and some handy links to further information online.
Without further ado, below are a few images outlining my antenna construction …