[cjsailer]

Do these solen inductors need the red coating sanded off where they connect to the network?

[E-Zee]

For any inductor, if you are not soldering to an already stripped or tinned end, you will need to remove the thin insulative coating at the location where you will be soldering a connection.

Scraping it with a utility knife blade is faster than sanding, but either method will work.

Elon