| Date ▲ | UTC | Station | Country / Site | kHz | Language | Flags |
|---|---|---|---|---|---|---|
| 01-Jan-1978 Jan-1978 | 2135 | Radio Sofia | Bulgaria · Kostinbrod | 6070 49m | English | QSL NEW STATION NEW COUNTRY |
| 26-Jun-1982 Jun-1982 | 2129 | Radio Sofia | Bulgaria · Sofia | 15135 19m | English | ▶ REC |
| 01-Sep-1991 Sep-1991 | 1740 | Radio Sofia | Bulgaria · Unknown | 15330 19m | English | |
| 09-Jun-1993 Jun-1993 | 2253 | Radio Sofia | Bulgaria · Unknown | 15330 19m | English | |
| 15-Jun-1996 Jun-1996 | *1859 | Radio Sofia | Bulgaria · Plovdiv | 11720 25m | English |