New to this forum and to sonar. Attached pics show a towfish design and proposed sonar system for use by our Sheriff’s Dept SAR dive team. We need to do bottom searches ranging from very shallow to over 100ft in northern Minnesota lakes. Our current hull mounted transducer doesn’t give us the definition we need to find our targets. In prelim tests we’ve done, towing a transducer at 15ft gave us much better results. We would like to extend the depth of the towfish to about 40-50ft to improve results for 100ft-plus bottom searches.
The towfish design has been built and tested and provides a stable platform for the transducer.
The big question is whether the proposed HDS setup with longer cable and transducer switch will work well. The design shown is based on web research of what others have successfully done with other sonar systems (Humminbird, etc.)
Will the 150ft Cat6 cable work? With the two-transducer switch, are any special cable terminations (impedence matching, etc)needed?
Any advice, sources for additional info or help would be appreciated. Thanks.
DanL MN
May 11, 2012 at 1:14 pm
#1307078
maybe along to lend an ear and help, at least he may know where to steer you to. 