The cable is tested to 236.5 MHz (250 MHz nominal). Yet it's a Cat 6 cable capable of 10 Gbit/s (if length < 55m). So how is that possible given the sampling theorem and problems with anti-aliasing? I would've expected \$ \ngtr \$ 125 Mbit/s. Clearly it is, so is the 236.5 MHz something else?
Cat 5 cable 100MHz bandwidth meaning and How are 200 GBit/s over twin-axial copper cable achieved? (esp. last para of answer) have only deepened my confusion.