Tim, EI4GNB reports making a FT8 contact on 40.680 MHz with 9A5CW in Croatia during the big Sporadic-E opening on the 7th of May 2021.
The screen composite below shows the FT8 contact from Tim's station.
While this wasn't the first 40 MHz contact between Ireland and Croatia, I think it may have been the first time 9A5CW has worked Ireland on this new amateur radio band.
This is the screen from 9A5CW...
It's good to see activity on the increase on 40 MHz from Croatia.
For more information on the 40 MHz amateur radio band, go to https://ei7gl.blogspot.com/p/40-mhz.html