Daily Archives: June 29, 2010

TSA humiliated an amputee mother, and traumatized her four-year-old son, according to her story, here [LINK BROKEN]. Hat tip: Radley Balko Update: Adding insult to injury, the mother in question was so traumatized by trolls that she deleted the original post (cached).

Amputee Mommy Versus TSA

A prolific inventor, Lee de Forest not only invented some of the first direction finding (DF) antenna systems, but also deserves the credit for having invented the first RF ranging system. Realizing that signal strength declines with distance, de Forest proposed inserting a variable resistor into the RF circuit to […]

RTLS: The First RF Ranging