EPIRBS now with reach

[peguinpower]

Here is a question. I looked at 406 mhz epirbs and they seem to also emit the 121 freq. Is it right to say that the 406 is to get the message out and the 121 is for locating?

"Transmits on 406 MHz via the COSPAS-SARSAT satellite system with your registered unique, digitally coded distress signal and 121.5 MHz (SAR homing frequency)"

Thanks,

/bing