These are great tools. It's basically an upgraded version of the ST60 that's easy to replace/upgrade. The hole cut is the same as the ST60 as it is on the mast. All you need is a SeaTalk 1 to SeaTalk NG adapter cable (A06047) and a terminal block (D244) to connect and get started. These things are around $30-$40, maybe less if you find them used.
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