| Answer | Crossword Clue |
|---|---|
| preradio | before the invention of radio |
| astrolabe | a compact instrument used to observe and calculate the position of celestial bodies before the invention of the sextant |
| astrolabes | ASTROLABE, a compact instrument used to observe and calculate the position of celestial bodies before the invention of the sextant |
| SHOCK | Word before radio or wave |
| OBOE | Letter before Peter in old radio lingo |
| scooping | Publish a news story before (a rival reporter, newspaper, or radio or television station) |
| stacking | assign (an airplane) by radio to a particular altitude and position within a group circling before landing |
