Hearing Czech Radio – Český Rozhlas – on mediumwave can may be not considered to be DX. They can be easily heard on both 270 kHz longwave and on 639, 954 and 1332 kHz mediumwave. I sent a reception report by e-mail on their “Dvojka” programme some weeks ago. Czech Radio is a good verifier and replied with a real QSL card and a post it notebook within a couple of weeks.
I heard the station on 954 kHz, a frequency where the programme is broadcast on 3 different transmitters. The strongest one, Dobrochov near Brno, has a power of no less than 200 kilowatts making it an easy catch here in Norway.