How frequently does the PRC 149 emit signals?

The PRC 149 radio emits signals every 20 minutes. This operation is crucial for maintaining communication in survival scenarios, ensuring that a beacon can regularly update its position to search and rescue teams. The timing is a balance; sending signals too frequently could lead to battery depletion and decrease the overall operational lifespan of the communication device, while sending them too infrequently could delay search efforts. Therefore, the 20-minute interval strikes a good balance between efficient alerting and resource management.