Acoustic underwater positioning beacon MID

MID-FREQUENCY PINGERS A quick and easy way to relocate an underwater site For more action shots, check out our Photos/Videos page JW Fishers acoustic pingers make it quick and easy to relocate an underwater site or piece of equipment. The pinger is attached to an underwater location where it continuously transmits a sonar signal. A diver equipped with a pinger receiver can detect the acoustic signal and follow it directly to the pinger. Pingers are available with different transmit frequencies so several can be deployed in the same general area without interfering with each other. The diver sets the pinger receiver to the desired frequency and is guided directly to the pinger. Fishers family of commercial grade acoustic pingers are available in the mid-frequency range (20 - 50kHz) which can transmit 2-3 thousand feet; or in the low-frequency range (11-16kHz) which can transmit 3-6 miles. Both mid and low frequency pingers are available as a single frequency pinger; or as a multifrequency pinger which allows the operator to select the desired transmit frequency in the field. Single frequency pingers can be ordered in select frequencies which is set at the factory.