It's all about the Software

Some of these cards can switch via internet but not all. When it is not specificly mentioned then you can be sure it can't (only within LAN)

When it works one can place instructions - how to switch - in the SDRC server login text for example. But the more i think about this ... It's not something i would want, if i allow 2 or more users on one radio, who decides wich antenna to use?

Hi Leon and all.

I purchased three of these ETH Relay boards:
https://www.aliexpress.com/snapshot/0.h ... 0156880252

They work as expected and I can now remotely switch antennas over Internet via a Web-interface.
Setting them up was quite easy and I got very quick support from the manufacturer.
See attached image.

73 / Ingolf, SM6FHZ

Hi Ingolf, that sounds interesting (my card doesn't work over WAN) but can you give a working link?
(to the item in the shop not to your shopping kart)