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| International Transmission
Standards |
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| a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | y | z |
| Country | Lines/Colour | Voltage | Frequency |
| Saba Island | 525 NTSC | 240/120V | 50/60Hz |
| Sabah/Sarawak | 625 PAL | 240V | 50Hz |
| Saipan | 525 NTSC | ||
| Samoa (Eastern) | 525 NTSC | 240/120V | 50/60Hz |
| Samoa (Western) | 525 NTSC | 240/120V | 50/60Hz |
| San Andreas Inslands | 525 NTSC | ||
| San Marino | 625 PAL | 240/220V | 50/60Hz |
| Sao Tome & Principe | 625 PAL | 50 Hz | |
| Saudi Arabia | 625 SECAM H | 220/127V | 50Hz |
| Saudi Arabia (Aramco) | 625 PAL | 220/127V | 50Hz |
| Senegal | 625 SECAM V | 127V | 50Hz |
| Serbia | 625 SECAM | 50Hz | |
| Seychelles | 625 PAL | 240/220V | 50/60Hz |
| Sharjah | 625 PAL | 50Hz | |
| Sierra Leone | 625 PAL | 230V | 50Hz |
| Singapore | 625 PAL | 230V | 50Hz |
| Slovakia | 625 PAL | 220V | 50Hz |
| Slovenia | 625 PAL | 220V | 50Hz |
| Society Islands | 625 SECAM H | ||
| Somalia | 625 PAL | 230/220V | 50Hz |
| South Africa | 625 PAL | 220V | 50Hz |
| Spain | 625 PAL | 220/127V | 50Hz |
| Sri Lanka | 625 PAL | 230V | 50Hz |
| St Croix | 525 NTSC | 60Hz | |
| St John | 525 NTSC | 60Hz | |
| St Kitts & Nevis | 525 NTSC | 230V | 60Hz |
| St Lucia | 625 PAL | 240V | 50Hz |
| St Maarten | 525 NTSC | 60Hz | |
| St Pierre & Miquelon | 625 SECAM V | ||
| St Thomas | 525 NTSC | 60Hz | |
| St Vincent | 525 NTSC | 230V | 50Hz |
| Sudan | 625 PAL | 240V | 50Hz |
| Surinam | 525 NTSC | 127/115V | 50/60Hz |
| Swaziland | 625 PAL | 230V | 50Hz |
| Sweden | 625 PAL | 220V | 50Hz |
| Switzerland | 625 PAL | 220V | 50Hz |
| Syria | 625 SECAM H / PAL | 220/115V | 50Hz |