Steer clear of flat network cables if at all possible. They are much more susceptible to EMI and crosstalk which can cause all sorts of strange issues. If you notice anything off like intermittent slowdowns or disconnects, swap it for a proper cat6 or even cat5e cable. I hate the flat network cables with a passionI'm going to get a flat network cable for through the window. then use a waterproof coupler to attach to the shortest Starlink cable i can order. modem will sit, probably attached to the center rear headrest. power cord from the modem to the rear ac outlet. keeps it all portable & easy peasy setup & removal.
all fixed
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Source: own and operate a commercial IT company and worked as a low voltage electrician (aka half-watt) prior.