Discover how to get the best out of your existing sounder
An intimate knowledge of common types of bottom substrate and how fish relate to them will not only result in catching more fish, but also in the ability to better predict future fish movements between their cycle and the annual seasons. The new Bottom Hardness module will be required for TZ Professional v4 to accept these new NMEA0183 sentences.
Bottom Hardness can now be recorded via NMEA0183 using the following sounders:
- Simrad ES70 and ES80
- Koden CVS-FX series
- Hondex HDX-121, HE-1500Di and HE-7300Di
- JRC JFC-130 series