Vesper Cortex M1- Full Class B SOTDMA SmartAIS Transponder w/Remote Vessel Monitoring - Works Worldwide [010-02815-20] Hunting & Fishing | Downrigger Accessories Frequency & Channels:Dual independent CHIRP

Frequency & Channels:Dual independent CHIRP channels from 25 to 250kHz

combined with Airmar’s powerful and simple CAST App

Stimulation strength has been increased at the top setting for enhanced effectiveness and choice over the entire range

and closest point of approach on all user targets selected

Two-speed aerator with water-resistant housing

Vesper Cortex M1- Full Class B SOTDMA SmartAIS Transponder w/Remote Vessel Monitoring - Works Worldwide [010-02815-20] Hunting & Fishing | Downrigger Accessories Frequency & Channels:Dual independent CHIRP**As the FCC requires all units sold in the US to be programmed by a qualified technician. Please submit the form below for programming at the time of purchase. A copy of the MMSI Registration or FCC Ship Station License is required along with the vessel master or owner's signature on the completed programming form. ** Click here to download form. Cortex M1 Full Class B SOTDMA SmartAIS Transponder & Remote Vessel Monitoring Full Class B SOTDMA with