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Larry

wrote in news:34dbfff2-33fb-4ab2-86de-4e1782d08c09
@x35g2000hsb.googlegroups.com:

I have three basic Raymarine instruments: Wind, Speed & Depth.
All of them ST60.
Wires between instruments and trnsducers are very long for my boat.
My question is if I can make them shorter insted of having three big
coils.
Thanks in advance
Mada

Sure. Cut them some distance from the plugs OUT OF THE BILGEWATER SHOWER
PLEASE, in some DRY convenient place and put them through a little terminal
strip so you'll be able to test them when, not if, they fail. Don't put
the sonar DEPTH terminal strip close to the others as it will radiate a
bit. If you mount the terminal strip in a little aluminum box grounded to
the ground terminal (shield) of the cable, it reduces radiation that may
screw up your radios from the sonar pulses. Put the sonar in one box and
the other two in a separate box to isolate the sonar noise from the others
that run on low signal levels. Don't let the boxes touch each other
running on separate grounds (shield of the cable).

Got troubles with WIND? Pull the cover off its box and you can easily
measure its voltages and output later on. After you install the
strips/box, measure what the levels are when these units are working,
EXCEPT THE SONAR TRANSMITTER OUTPUT to the transducer. Then you'll have an
idea what's "normal"....put it on a piece of notepad and stuff it in the
box for the poor sap to has to trace the wires...