The following radio stations broadcast on AM frequency 666 kHz:
Australia
China
Iran
- IRIB Fars from several sites
Japan
- JOBK at Osaka
Philippines
| Call Sign | City of License | Power (kW) | AM Stereo Compatibility |
|---|---|---|---|
| DZRH[1] | Pasay City | 50,000 | Yes |
Portugal
- Antena 1 from several sites
Spain
- EAJ-1 at Barcelona
Vietnam
- VOV1 at Nha Trang
Defunct
- Gold in Exeter, United Kingdom
- SWR cont.ra from the Bodensee transmitter in Rohrdorf, Germany; shut down on 8 January 2012