The Type 8325 Small Seismic Transponder 6 (SST 6) has been specifically designed for acoustic positioning of ocean bottom seismic cables and nodes, where high-performance, small-size, low-cost, ease of programming and rugged design are important operational factors.

The SST 6 operates in the Medium Frequency (MF) band and is compatible with Sonardyne’s Ranger 2 Wideband Nodal USBL systems.

These USBL systems measure both range and bearing to SST 6 in the same operation so an accurate position of the node or cable can be determined very quickly and at a high update rate.

Combining the use of Ranger 2 USBL and SST 6 in this way results in considerable savings in vessel time and new standards of efficiency for seismic operations.

Sonardyne Wideband acoustic signal processing offers improved performance in challenging conditions such as at long range, high elevation and long layback tracking, with performance diagnostics provided for quality control.

Sonardyne Wideband signal encoding also reduces the interference both on and by adjacent Sonardyne and other acoustic positioning systems.

Another benefit of the SST 6 is its programming ease and flexibility. Any one of 16 group interrogation addresses and 50 reply channels provide more than 800 unique acoustic identities which can be quickly programmed into each transponder using an inbuilt Near Field Communications (NFC) link.

This lends itself to the marking of seismic cables and other applications demanding dense transponder coverage.

The NFC link provides the ability to enter SST 6 into a storage mode when not in use, thereby significantly increasing the overall battery endurance.