Pinger Frequency News Today

Says theres 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 wed see a sharp spike at the pinger frequency. >> time is not on the investigators 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 theyll use to map the sea floor once they have an idea where the debris site ...

Hydrogr hydrogropher. >> theyre 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 theres more interference closer to the surface from waves from passing ships. >> this shows the frequencies in the ocean. if the pi...

Pings detected by the ocean shield ship were actually at 33.3 kilohertz. thats a lower frequency than 37.5 kilohertz. does this mean this cant 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....