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- … that a bug key can be made to work like a sideswiper by tying its vibrating arm to the damper with a rubber band?
- … that before it sold electronic kits, Heath sold the Heath Parasol light airplane in kit form, starting in 1926?
- … that the abbreviation UTC is a compromise between the English and French word orders, so it reads the same in every language?
- … that the suffix of country guitarist Chet Atkins's call sign, W4CGP, stood for "Certified Guitar Player"? See Notable amateur radio operators.
- … that FT8 operators are advised to keep the ALC meter at zero, as a badly overdriven signal can appear on waterfalls as a cluster of weaker copies?
- … that the cubical quad was devised at a missionary station in Quito, Ecuador, where thin air let corona discharge damage beam element tips?
