This is it right here. Make a cup of coffee and pull up a chair. If you know nothing about what these units can do for your fishing, you will have a much better idea after reading these. Kudos to the Guy who did this. :beer:
https://fishinweb.com/messages/messages/13028/13028.html?1254779454
https://fishinweb.com/messages/messages/13028/13028.html?1254779454