Rugged Rocks has teamed up with RepeaterBook.com to add ham radio repeater location and frequency information to your Lowrance HDS GPS unit. The required files are generated with information provided by RepeaterBook.com and are provided for free by Rugged Rocks. Please keep in mind that Garrett, KD6KPC, manages the RepeaterBook.com effort which runs on donations by people like you who find this information useful. Please consider sending RepeaterBook.com a donation to keep this effort going by using the Donate button below.