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Finally managed to install the antenna switch in the attic. For controlling it remotely, I use an old Arduino with Ethernet shield. Since the antenna switch needs 12V for triggering its relais, a 4 channel relais module is needed to convert the high signal from 5v to 12v. The Arduino takes simple HTTP GET requests for choosing the desired antenna. Now I can switch to any antenna from the shack via the network without a dedicated control cable 👍

@DL6MHC that's really nice!

Is there a way to know which antenna is selected? Or do you just re-select the one you want?

@M0YNG Thank you! The Arduino tells you which antenna is selected after switching to an antenna or when you open the URL without any parameters. If you are interested, here is the code (copy paste theft from various inetrnet sources): gist.github.com/exitnode/26b67

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