by Rich Holoch
https://ky6r.wordpress.com/2015/02/18/remote-switched-tee-doublet/
A simple antenna tuner made from switches. How to determine the “best” transmission line lengths for multi-band center fed wire dipoles.
by Cecil Moore, W5DXP
http://www.w5dxp.com/notuner/notuner.htm
“The superformula is a generalization of the superellipse and was first proposed by Johan Gielis in 2003″
from Wikipedia
http://mysterydate.github.io/superFormulaGenerator/
Some superformula samples
by tomthefnkid
By Cade Metz at wired.com
http://www.wired.com/2015/11/google-open-sources-its-artificial-intelligence-engine/?mbid=social_fb
By @F5OEOEvariste (article at: rtl-sdr.com)
http://www.rtl-sdr.com/transmitting-fm-am-ssb-sstv-and-fsq-with-just-a-raspberry-pi/
by chenalexander.com
“Two pianists repeat the same twelve note sequence, but one gradually speeds up. Here, the musical patterns are visualized by drawing two lines, one following each pianist.”
by chenalexander.com
Send a CQ and immediately get a list of reverse beacon stations that heard your call, from around the world, with time and signal report data.
Logs are collected in a database that is accessible for research.
