UTP (unshielded twisted pair) Ethernet cable is much more common than STP (shielded twisted pair), but you can find it pretty easily, and it is not much more expensive.
this post was submitted on 15 Sep 2025
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What category of cable is it? I've heard high numbers like Cat 7 have good shielding.
Cat6 per the listing on Amazon, but I don't trust it.
Most cat6 is unshielded. Make sure you're using shielded cat6 and shielded connectors. Check it with a multimeter to make sure there is continuity from end to end too.
is the power supply or switch some bargain basement stuff? No-name chinese switched power supplies are garbage. I have an LED power supply that generates interference all the way up through 2 m.
for many POE devices, you could inject voltage from a linear power supply onto the wires. Might be an option if the device isn’t too “smart” about it’s POE protocol.
Both the switch and the WAP are Ubiquiti, a reputable brand. The AP does not use passive PoE.
The cable category only informs you about the maximum frequency the cable has been designed for. Cat5e can handle 100 MHz, cat 6 handles 250 MHz, cat 7 handles 600 MHz. Higher frequency allows higher speed because you can fit more information in the signal.
Shielding is what protects the cable from interference, and protects outside devices from the cable. As someone else mentioned, not all cable is shielded. Terminating shielded cable is more difficult than terminating unshielded cable, so I recommend buying factory terminated cables when possible.
Check out cables to go as a good alternative to Amazon. Look for shielded cables with metal plugs, this provides a continuous ground between the switch and the device which should help resolve interference.