I have received several pirates from Serbia. They seem to be on the air mainly around 1700 kHz. Some of them use quite high
 power but 70% of the stations are working with power lower than 100watt (transmitter based in tube PL 504).

 I have also many photos of a few Serbian pirates sent me by e-mail via Radio Texas in Serbia and also from Radio Elektron
 from Kucevo.(Thank you very much!!!)
 There are about 30 Medium Wave-pirates in Serbia. They are mostly QSO-stations with no music programmes.
 These stations are mainly located in Belgrad, Pancevo, Pozarevac, Velika Plana, Smederevo, Jagodina, Kragujevac, Krusevac
 and Kucevo. There have been big commercial pirates on FM but during 2006-2007 most of these stations are now closed.
        
                      I AM GOING TO SERBIA TO VISIT LOCAL PIRATES AND FM-STATIONS IN MAY 2008
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Here is also a list of Serbian pirates received in Finland by me:
Station	Location	kHz	Date	Time	O=	mp3	Remarks
Radio YU 1 (1=jedan)	-	1727	6.2.-05	19.23-		mp3	10 kW !
Radio YU 1	-	1667	26.2.-05	22.04-		mp3
Pink Panter	Smederevo	1670	5.2.-05	21.05-		mp3	PP in QSO with Galaxias from  Thessaloniki, Greece  Photos 1, 2 (4x GU 81) 3 kW
Real Radio	Belgrade	1665	4.2.-07	19.14-		mp3	100-150 W
Radio Daleky	Majdanpek (140 km SE  from Belgrade)	1723	29.3.-07	00.10-		mp3	Photo  1 kW
Radio Elektron	Kucevo (100 km SE  from Belgrade)	1709	6.4.-07	20.40-		mp3	Photo 1, 2, 3 QSL  300 W
Radio Doxa	Kucevo (100 km SE  from Belgrade)	1709	7.4.-07	20.33-		mp3	Photo 1, 2, 3 QSL  1 kW
Radio Vihor	Pancevo	1709  1695	7.4.-07  3.11.-07	20.41-  20.30-		mp3	Photo 1, 2, 3  Regards to me 3.11-07!!: mp3
Radio Texas	Vrsac (80km NE from B.)	1701	3.11.-07	20.48-		mp3	Photo 1, 2  50 W!!  More photos 1, 2, 3.
Radio Lovac	Pancevo	1697	3.11.-07	20.28-		-	Transmitter photo
Radio Javor	- - ? - -, Serbia	1655	18.10.-07	19.50-		mp3	mp3-b    Mp3 from 6.3.2008
Radio Balkan	Beograd, Serbia	1700	19.1.-08	20.56-		mp3	mp3-b  Photo1, 2, 3, 4, 5, 6
Radio Vaski (?)	- - ? - -, Serbia	1700	19.1.-08	20.32-		mp3
Radio Viktor	- - ? - -, Serbia	1702	19.1.-08	20.40-		mp3
Radio Oskar	Jagodina, Serbia	1700	19.1.-08	20.57-		mp3	mp3_b  (His tx 2x 813 tubes)
Radio Novi Studio	Smederevo	1652	11.1.-08	19.44-		-	Photo 1, 2
Here some more photos of Serbian pirates (Not heard by me)
Vogelfreies Radio from Germany wrote me (December 2006) comments of former Yogoslavian broadcasting:  "As far as balkan pirates are concerned I know of a film documentary called  "We want our voices to be heard" from the year  1970 about illegal radios in Yougoslavia. It was produced by Zagreb Film, the author is Krsto Papic.  Obviously there were plenty of pirates in the Tito age, quite similar to the situation as it is still in Holland. I hadn't seen that film  myself but I have a description out of a documentary movie directory I can quote from.  The 15 minute film shows several pirates from the rural mountain areas of Croatia and in the Drau river valley where the radio  stations were operating with very simple equipment but got very popular among their local audiences.  Authorities were hunting the pirates and there were severe punishments but as soon as a station was gone a new one  appeared. 5 stations were shown in the documentary, Radio Cerje, Radio Stanica, Radio Ladanje, Radio Stef and Radio  Podravini. Programmes not only contained music but also some political views and even a language lesson for workers who  intended to emigrate to western Europe."
Pirate broadcasting seems to have very long history in former Yogoslavia, even from the 1970's. There are still many FM-pirates  broadcasting also on FM-band ! It is obvious that pirates on Medium Wave can broadcast quite freely, without risk to be raided,  if FM is also not controlled to tight.  However, the authorities seems to have closed unlicenced FM-stations in December 2006:  December 28th, 2006, 14:48 UTC by Andy  Seven radio stations and one television station in Serbia have been shut  down for broadcasting without a licence. The Republic Broadcasting Agency  (RRA) has shut down stations for broadcasting illegally on the territory of Belgrade.  Some station officials showed resistance to the officials who came to close  down the stations and broke some equipment of the RRA. The Agency said that  those who cause problems will have charges pressed against them.  (Source: Beta News Agency via B92)            Thanks for info to Vogelfries Radio, Germany