JW Fishers MLFP-1 Multi Low-Frequency Pinger

MLFP-1 Multi Low-Frequency Pinger by JW Fishers Underwater acoustic pingers are devices that emit acoustic signals. They are used to identify an underwater site or piece of equipment so that a returning diver equipped with a pinger receiver can pinpoint the exact location. Underwater acoustic pingers are devices that emit acoustic signals.They are used to identify an underwater site or piece of equipment so that a returning diver equipped with a pinger receiver can pinpoint the exact location. Different broadcast frequencies are available for pingers, allowing multiple to be deployed in the same geographic region without interfering with one another. The diver tunes his pinger receiver to the targeted pinger's frequency, and the receiver directs him directly to it. These low-frequency acoustic pingers have a range of 3 to 6 miles, whereas ordinary mid-frequency (30 to 40 kHz) pingers have a range of several thousand feet. The operator may adjust the number of pulses per second, the dur