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- … that an Astron RS-35A power supply is rated at 25 amps continuous, the "35" being its intermittent rating?
- … that cutting power from 100 watts to the 5 watts of QRP costs 13 decibels, a little more than two S-units?
- … that the open-source digital voice mode M17 takes its name from the address of its creator's local radio club?
- … that the off-center-fed dipole is often called a Windom, after Loren Windom, who described it in QST in 1929?
- … that the ARRL's Official Observer program served for more than 85 years before closing in 2019, replaced by the Volunteer Monitor program?
- … that at the equinoxes, sunset on the US East Coast comes at about the same moment as sunrise in Southeast Asia and Indonesia? See Gray line.
