The transmitter in Grimeton -over a 100 years old now- transmitted today. They start it up many times a year, but it only transmits like twice a year and then only for a few minutes.
I’ve been there a number of times when they started it up, even once participated, but now I’ve finally tested the receiver-kit i assembled.
Here’s from the 100 year anniversary, it’s a fascinating watch: https://www.youtube.com/live/JJb_RdKX4qc
And imagine they had to run it without hearing protection for being able to hear problems in the machine asap.