They make the P319 for several different FF manufacturers. I believe the actual part number is P319-BL for the Lowrance connector. It only comes in 50/200 khz with 45 and 12 degree cone angles respectively. The 12 degree 200 khz gives a limited view (about 20% of the depth), but when it shows something you will know that you are right above it. They are about $128 at blueherronmarine.com.
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