NDB navaids
Non-Directional Beacons — low/medium-frequency beacons flown with an ADF. 6,610 on record.
| Ident | Name | Country |
|---|---|---|
| SEL | Seletar | 🇸🇬 SG |
| SE | Selfoss | 🇮🇸 IS |
| XR | Selikhino | 🇷🇺 RU |
| OC | Semarang | 🇮🇩 ID |
| AG | Sembawang | 🇸🇬 SG |
| SM | Semenivka | 🇺🇦 UA |
| SRE | Seminole | 🇺🇸 US |
| SP | Semipalatinsk | 🇰🇿 KZ |
| S | Semipalatinsk | 🇰🇿 KZ |
| SNE | Senetose | 🇫🇷 FR |
| LL | Senipah | 🇮🇩 ID |
| SJA | Senja | 🇳🇴 NO |
| SEO | Seo De Urgel | 🇪🇸 ES |
| CW | Seongmu | 🇰🇷 KR |
| SEP | Seppi | 🇫🇮 FI |
| ZV | Sept Iles | 🇨🇦 CA |
| RJ | Serdar | 🇹🇲 TM |
| SR | Serednie | 🇺🇦 UA |
| SR | Sergeli | 🇺🇿 UZ |
| SE | Serov | 🇷🇺 RU |
| ZU | Serui | 🇮🇩 ID |
| SVN | Sevan | 🇦🇲 AM |
| SF | Seven Forks | 🇰🇪 KE |
| ZZR | Severn | 🇨🇦 CA |
| KZ | Severnoye | 🇷🇺 RU |
| SPP | Sevilla | 🇪🇸 ES |
| SWT | Seward | 🇺🇸 US |
| SWZ | Sewart | 🇺🇸 US |
| SEY | Seychelles | 🇸🇨 SC |
| UU | Seyer | 🇺🇸 US |
| SG | Sg | 🇹🇼 TW |
| SC | Shache | 🇨🇳 CN |
| LP | Shafranovo | 🇷🇺 RU |
| CU | Shahe | 🇨🇳 CN |
| ESH | Shahid Vatan Pour | 🇮🇷 IR |
| SKD | Shahre Kord | 🇮🇷 IR |
| SHR | Shahroud | 🇮🇷 IR |
| SI | Shaikh Isa | 🇧🇭 BH |
| SKR | Shaker Hill | 🇺🇸 US |
| EL | Shalkar | 🇰🇿 KZ |
| 4T | Shamattawa | 🇨🇦 CA |
| EZF | Shannon | 🇺🇸 US |
| RD | Shapp | 🇺🇸 US |
| RZ | Sharanga | 🇷🇺 RU |
| OWT | Shark El Oweinat | 🇪🇬 EG |
| SKH | Sharm El Sheikh | 🇪🇬 EG |
| HWB | Shaw | 🇺🇸 US |
| SP | Shawn | 🇺🇸 US |
| SYH | Shayba | 🇸🇦 SA |
| HE | Shebb | 🇺🇸 US |