User talk:107.127.18.61

IP address 107.127.018.061 is shared by the customers of your internet service provider (ISP). If you are being bothered by messages about changes you didn't make, such as might appear below, you might want to sign up for a Wikipedia User account or log in to your existing account, if you have one.

DJ7BA (talk) 08:39, 22 June 2022 (UTC)

Contrary to the reverter, I agree that the topic Impedance-matching-devices indeed does include ATU (automatic tuning units). They are a practical application for Impedance-matching-devices.

What the topic DOES NOT include, however, is a balun. This has a different function. It does not match impedance (unless combined with something unmentioned that transforms). Instead it reduces mantle waves on the coax outside, and their manifold negative effects.