On what frequency do newer generation ELTs transmit a stronger signal?

Newer generation Emergency Locator Transmitters (ELTs) transmit a stronger signal at a frequency of 406 MHz. This frequency is part of the COSPAS-SARSAT system, which is designed for search and rescue operations. The 406 MHz signal offers several advantages over the older 121.5 MHz frequency, including a stronger and more reliable signal, which helps with more accurate location tracking.

At 406 MHz, the transmission includes specific data such as the aircraft's identification and location information, enhancing the efficiency and effectiveness of search and rescue missions. This allows rescuers to respond more quickly and accurately to emergency situations. The older frequencies, like 121.5 MHz, were primarily for monitoring and no longer offer the same level of effectiveness, as they are no longer actively monitored by satellite systems.

Overall, the use of 406 MHz technology results in improved safety for aviation and maritime operations, making it the preferred frequency for modern ELT transmissions.