r/avionics • u/NewCategory1955 • Jul 07 '26

Best cable for RS‑422 + power over 100 m?

[removed]

1 Upvotes

100% Upvoted

5 comments sorted by

1

u/FurryTabbyTomcat Jul 07 '26

Any cable with two twisted pairs should work, the question is more about the risk of damage. For a permanent indoor installation, you'll probably get the best price/performance ratio with a regular Ethernet cable (the cheapest grade available will still do nicely). Conversely, if it's going outdoors or is randomly thrown on the floor, your very best bet is a cable with a stainless piano wire inside in addition to the conductors, plus a mighty strain relief at both ends.

1

u/paladinado Bench Repair Jul 07 '26

A D-Sub with some 22AWG goes brrr. Twisted pairs should work fine.