Pinger Frequency News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Says there's more interference from waves, passing ships and inclement weather that makes isolating the pings hard sgler this show it is frequencies in the ocean. if the pinger were nearby we'd see a sharp spike at the pinger frequency. >> time is not on the investigator's side. the batteries on the pingers only last about 30 days. if the pingers fail searchers will likely turn to sonar. >> this is the sonar. this is what they'll use to map the sea floor once they have an idea where the debris site is or to search for the debri brooe site if the pinger can't find it. >> reporter: like hide pho...

Hydrogr hydrogropher. >> they're going to use to this search for that pinger locater. >> reporter: how far can it hear? >> about five miles. >> reporter: but unlike the depths in the indian ocean where malaysia flight 370 disappeared, the java sea is shallow, running only about 80 to 100 feet deep. while it is easier to operate hydrophones at this depth, coleman says there's more interference closer to the surface from waves from passing ships. >> this shows the frequencies in the ocean. if the pinger were nearby, there would be a sharp spike right at that pinger frequency. >> reporter: time i...

Pings detected by the ocean shield ship were actually at 33.3 kilohertz. that's a lower frequency than 37.5 kilohertz. does this mean this can't be the plane or is there some other explanation and it still could be? >> it definitely still could be. what you have with the pinger frequency can be affected by temperature of the water, the depth, the pressure, the current and actually the battery life and actual orientation of the pinger on the floor. all those could affect it. so definitely could be. >> chris, just to follow. we were told that the batteries on these beacons would be out of juice ...