Using a Powerline adapter to link an extender (mesh?) to the Starlink router.

[AitchB]

Can I use  a Powerline adapter to link an extender (mesh?) to the Starlink router?

[RicochetStarlink]

Depends...

I'm relatively certain that you cannot use a Powerline adapter as a "go-between" to connect two Starlink Routers in a mesh. There are a whole host of technical reasons for this but the simple explanation is that it is extemely unlikely to work. Although, you could always give it a try.

If you mean extending the Starlink network using a Powerline adapter, this might be possible. However, as I understand it, Powerline adapters are relaively low-speed compared to other options. Also, IIRC, two Powerline adapters are only able to connect when they are on connected power circuits. For example, Powerline adapters can (usually) be connected between two rooms in the same home, but not across building (i.e., from your house to your barn). 

Disclaimer: I have not tried to use any Powerline adapters in a very, very long time. My knowledge of them is likely out of date.

In the end, a WiFi mesh using two or more Starink or third-party WiFi routers is probably your best bet. Third-party routers might provide a greater coverage area if you have a 1st or 2nd geneartion Starlink kit.

Thanks!