Not sure if this is of general interest, but I have managed to ID the stations on the film (thanks to my good friend Google Translate!).
Station 1 (with local band outside the window):
Radio Stanica Kutnjak, Kutnjak
Station 2 (with DJ talking over an instrumental tune):
Radio Cerje, Cerje Nebojse. Op: Dragutin Cerjan (the guy in the yellow shirt), now owner of Radio Max, a local FM station in Cerje Nebojse. Began broadcasting in 1967 or 1968. Raided many times.
Station 3 (guy talking about politics – I guess):
Radio Stanica (possible Radio Stanica Something, but sign by the door just says Radio Stanica), unknown location.
Station 4 (young man playing pop music, older man singing):
Radio Stanica Kućan, probably from a place called Kućan (several possibilities).
Station 5 (with German lesson):
Lokalna Radio Stanica Donje Ladanje, Donje Ladanje.
Station 7 (guy with hat talking):
Radio Stanica Stef (?), unknown location.
Station 8 (with radio play):
Radio Podravine, Novigrad Podravski. Operator: Ivan Trepotec. The station seems to have been established in 1966. Impressive programme line-up (the schedule was sometimes printed in Glas Podravine, a local newspaper).
Station 9 (school children playing music):
Radio Stanica Lopatinec (I think that’s what they girl is saying), Lopatinec
The serious-looking guy behind the desk is said to be a local party official. He’s not too happy with the pirates.
All the stations are from the areas of Hrvatsko Zagorge and Podravina (Drava river basin) in the north of Croatia (some of the locations mentioned above are tiny villages). There appear to have been particularly many pirates in this part of Croatia in the 1970s.
It may all have started with a station called
Radio Varaždin, which was established by Varaždin hams in 1945 (Varaždin is a medium-sized town in the Zagorje/Podravina area). Not sure if this station was legal or not – but it must have been tolerated at least, because it seems to have been on the air daily (at least in periods) with an impressive programme line-up (a local newspaper in Varaždin often printed their schedule). The station is still on the air today (with a licence).
Another local station with an impressive programme line-up (its schedule was sometimes printed in Glas Podravine, a local newspaper) was
Radio Stanica Koprivnica in Koprivnica. This station seems to have started broadcasting (irregularly) in 1960.
I find this very interesting because one of the Ex-Yu pirates I’ve heard recently (a guy who has had several QSOs in English with Dutch pirates in the past) is from the Zagorje/Podravina area. Perhaps he’s the last remnant of this ancient pirate scene?
More research needed! (The problem is that I don’t speak Croatian…) (Well, at least they don't use the Cyrillic alphabet in Croatia!
Sources:
Glas Podravine and Varazdinske Vijesti (local newspapers available at
http://library.foi.hr/digi/en/index.php?page=novine)
http://www.radio-varazdin.hr/http://www.radiomax.hr/onama.phphttp://www.ravnododna.com/kako-je-ugusena-prva-piratska-zajednica-u-hrvatskom-zagorju/