Why does the landscape remain lit 30 to 45 minutes after the sun has set? Harriett Drake, Fayetteville, Georgia What you’re seeing then is twilight. From wherever you’re standing, shortly after sunset ...

Morse code is a method of transmitting text information as a series of on-off tones, lights, or clicks that can be directly understood by a skilled listener or observer without special equipment. Each ...

What’s the worst thing about traditional Morse keyers? If you ask us, it’s the fact that you have to learn how to do two distinct things with one hand, and switch between them quite quickly and often.