NDB navaids
Non-Directional Beacons — low/medium-frequency beacons flown with an ADF. 6,610 on record.
| Ident | Name | Country |
|---|---|---|
| STI | Sturgeon | 🇺🇸 US |
| SUE | Sturgeon Bay | 🇺🇸 US |
| IRS | Sturgis | 🇺🇸 US |
| NS | Sturup | 🇸🇪 SE |
| SS | Sturup | 🇸🇪 SE |
| TT | Stutt | 🇺🇸 US |
| SG | Stuttgart | 🇩🇪 DE |
| SY | Stuttgart | 🇩🇪 DE |
| SGT | Stuttgart | 🇺🇸 US |
| SU | Stykkisholmur | 🇮🇸 IS |
| SFS | Subic Bay | 🇵🇭 PH |
| SRE | Sucre | 🇧🇴 BO |
| SB | Sudbury | 🇨🇦 CA |
| SL | Sukhodol | 🇷🇺 RU |
| IN | Sukhotino | 🇷🇺 RU |
| AV | Sukhumi | 🇬🇪 GE |
| ST | Sukkertoppen | 🇬🇱 GL |
| SK | Sukkur | 🇵🇰 PK |
| UX | Sulfy | 🇺🇸 US |
| UUV | Sullivan | 🇺🇸 US |
| SIV | Sullivan | 🇺🇸 US |
| SN | Sultanskoye | 🇷🇺 RU |
| NQ | Sumbawa | 🇮🇩 ID |
| SU | Sumbe | 🇦🇴 AO |
| SBH | Sumburgh | 🇬🇧 GB |
| MP | Sumenep | 🇮🇩 ID |
| CM | Sumie | 🇺🇸 US |
| ESU | Summerdale | 🇺🇸 US |
| 5B | Summerside | 🇨🇦 CA |
| UMM | Summit | 🇺🇸 US |
| SQM | Sumner Strait | 🇺🇸 US |
| SMS | Sumter | 🇺🇸 US |
| GR | Sumy | 🇷🇺 RU |
| 9G | Sundre | 🇨🇦 CA |
| SN | Sunyani | 🇬🇭 GH |
| SO | Suomi | 🇺🇸 US |
| ZQT | Superior | 🇨🇦 CA |
| WR | Surabaya | 🇮🇩 ID |
| SB | Surabaya | 🇮🇩 ID |
| SU | Surat | 🇮🇳 IN |
| SR | Surat Thani | 🇹🇭 TH |
| MC | Surff | 🇺🇸 US |
| GK | Surgut | 🇷🇺 RU |
| AM | Surgut | 🇷🇺 RU |
| SU | Surigao | 🇵🇭 PH |
| SKT | Surkhet | 🇳🇵 NP |
| SY | Surrey | 🇳🇿 NZ |
| BH | Surry | 🇺🇸 US |
| SUS | Susi | 🇫🇮 FI |
| SG | Susilo | 🇮🇩 ID |