| Clue | Source | Date |
|---|---|---|
| On-the-air OK | Newsday | 08 Mar 2024 |
| Broderick Crawford, gravel-voiced burly star of the 1950s cop show Highway Patrol, was famous for rasping this acknowledgement into his microphone in every episode (3-4) | ||
| Police radio affirmative | Newsday | 10 Dec 2023 |
| 'Understood' | New York Times | 31 Aug 2023 |
| It's OK for Americans to call out these two figures | The Guardian Cryptic | 27 Jun 2023 |
| 'Got it' on the radio | The Washington Post | 14 Apr 2018 |
| "Got it" on the radio | LA Times Daily | 14 Apr 2018 |
| "Got it" on the radio | ||
| "Copy that" | LA Times Daily | 01 Jun 2017 |
| 'Copy that' | The Washington Post | 01 Jun 2017 |
| "Copy that" | ||
| Radioer's acknowledgment | Thomas Joseph | 01 Apr 2016 |
| 'Understood' | New York Times | 19 Feb 2016 |
| Police radio affirmative | ||
| "Roger" | ||
| CB sign-off | ||
| CBer's sign-off | ||
| "Message received" | ||
| CB sign-off | ||
| CBer's affirmative | ||
| "Roger" | ||
| Start of a sign-off phrase | ||
| "Roger" | ||
| On-air acknowledgment | ||
| Trucker's approval | ||
| CBer's "roger" | ||
| O.K., to a CBer | ||
| CB O.K. |