This also really points out the problems with the VHF 121.5 ELTs. Because they are low power and their signals bounce all over the place they can be a bear to find even with the proper equipment. The newer UHF ones seem to work a lot better and in any case the satellite based receivers can do an excellent job of really pinpointing the location. Problem with the satellite service is you have to wait for a satellite pass and then get the data down and to the SAR center.