The built-in bi-frequency sounder of 83 and 200 KHz, is equipped with a dual beam probe from 20 ° to 60 °. It allows to have at the same time an excellent precision on the relief of the bottom and a detection of the fish on a total coverage of 60 ° with an optimal range of 200 meters.
By using CHIRP modulation rather than a constant frequency over three ranges, the Helix 7 sounder offers exceptional frequencies at all depths. In this way, you can have up to 540 KHz, automatically selected according to the underwater environment and the depth
A micro SD plotter card
This model is equipped with a micro SD card and can receive Navionics Gold cards that enhance the functions of a plotter. The integrated GPS provides a precise position at 3 meters that will detect the abundant areas of fish and memorize them for later reference.
Compatibility
Most models of sonar or Helix 7 handsets are compatible with a Bluetooth application that allows you to connect them with your Smartphone to read or exchange information in real time.
Some versions of the Hélix 7 series