I have used a Humminbird 170 with a through the hull transducer on my Ocean Kayak for several years. I need to replace it and the 170 model is discontinued. Is there another model Humminbird fishfinder that can use my existing setup?
Though there may be some who can answer this here, you might be better off asking this question on a fishing specific forum, or better yet from a Humminbird dealer, or best yet, from Humminbird themselves.
one left here
Also, this site will probably answer your transducer connection question. I noticed a "support" link up top.
Gee, you're taking me way back to when, as a not so "proper yachtsman", I installed a humminbird on my sailboat. 1/4 the price and 4 times the features of the Brookes and Gatehouse sounder that came with my next boat...