Last night I was wondering just what Questus might say regarding flexing the radar cable. I thought it would be something like, "We've sold over a million units and haven't had any complaints". Well, tongue-in-cheek, of course yet what did you expect for an answer?
I'm and engineeer, please tell me just how it is mechanically possible to fix one end of the radar cable to the display, fix the other end to the radome, rotate the radome and not flex the cable? If the whole bundle swings then the display must swing with it to avoid long term damage. Questus CANNOT possibly guarantee just how long the cable will last.
No radar manufacturor offers cable designed to be flexed repeatedly. The industrial cables
which ARE designed to do so are extremely expensive as are the installation fixtures. It has been learned a long time ago that although it helps to distribute the flexture over as long of a run as possible, it still does not prevent failure. The truth about the Questus statement is that "improper installation" translates to a shorter distance over which the cable twists versus a better installation where the twist is made over a longer length.
It is not merely a matter of prudence in this instance, it is not merely a matter of spending money
to periodically replace the cable, it is a matter of nasty inconvenience should that cable fail JUST when you are in a sticky situation at night or fog
observing the converging vectors of other vessels, reefs
, buouys or land which you must to avoid.