Modern a/c ELTs transmit on 406MHz which is nowhere near any voice band.
MAYDAY calls are made on 121.5MHz or any other available one
ELT's transmit on 406 to talk to satellites for ID (and GPS if available) as per:
http://www.cospas-sarsat.org/Documen...ompleteDoc.pdf
It also includes a 121.5 option
The US FCC (and a lot of others) require 121.5 transmissions as before (but at a lower power) for final homing purposes.