N3JIM Twin Lead Antenna
N3JIM's Twinlead Antenna
Last updated Mon, 30 May 2011
(work in progress) Documenting my first antenna project, a 2-meter "Slim JIM" made from 300 ohm TV twinlead.
Slim-JIM calculator (metric) -- I created an Excel spreadsheet, copied in the metric lengths (in mm) for each section, then entered the conversion formula in the next column:
Excel 2007 has a "fractional format", which I chose with quarter-inch precision.