Radio Novi Probni is from Despotovac from Central Serbia. This station's power today is around 200 watts but on these photos you can see elder 50 W transmitter. The frequency area is 1650 - 1780 kHz.

I have once tried to hear Novi Probni but no luck with conditions.

I have these photos directly from the station.
I have heard this station once shortly when Radio Barones from Holland had QSO with Serbians around 1700 kHz (Mp3-clip). That happened two years ago on 19.1.2008, late evening on 1702 kHz .
Later I got more information about the transmitter: Power is 500 Watts with 3 x GK71-tubes with 1500 V anode Voltage. Antenna is 76 m about 12 m high (1,5mm wire). (So, the comment from UU1CC below, under these photos, was perfectly right! Great knowledge!)


I have also contact from 3rd new Serbian MW-pirate. That station is Radio Sony near Kragujevac, Central Serbia. He is interested in to test signal to Finland when new tx is ready.