Many thanks to SWLing Post contributor, Paul Jamet, who writes:

Hi Thomas,

This message is to draw your attention to this announcement from Radio Taiwan International titled “Dear RTI”:

https://event.rti.org.tw/dearrti/en/

Listeners are invited to send postcards to the station before June 18, 2023:
https://event.rti.org.tw/dearrti/en/send-a-postcard/

I hope that readers of the SWLing Post site and RTI listeners will be very numerous to participate in the operation Dear RTI

Thanks. With my best regards.

Paul JAMET

Thank you so much for the tip, Paul!