| Date ▲ | UTC | Station | Country / Site | kHz | Language | Flags |
|---|---|---|---|---|---|---|
| 16-Jul-1978 Jul-1978 | 2300 | WWV | United States · Fort Collins, CO | 10000 | English | QSL NEW STATION |
| 31-Dec-1989 Dec-1989 | 2309 | WWV | United States · Ft Collins, CO | 10000 | English | |
| 08-Dec-1999 Dec-1999 | 2200 | WWV | United States · Fort Collins, CO | 10000 | English | |
| 18-Jul-2017 Jul-2017 | 0111 | WWV | United States · Fort Collins, CO | 25000 | English | |
| 24-Aug-2017 Aug-2017 | 0143 | WWV | United States · Fort Collins, CO | 25000 | English | |
| 10-Jun-2020 Jun-2020 | 1710 | WWV | United States · Fort Collins, CO | 25000 | English | |
| 08-Oct-2022 Oct-2022 | 2029 | WWV | United States · Fort Collins, CO | 25000 | English | ▶ REC |