There are a good number of broadcasting stations that use the radio spectrum to broadcast their signals, without having a license, permission, or authorization. Outside Greater Buenos Aires, unofficial stations that have been heard on the X-band are:
1610 Radio Machagai, at General Rodriguez, Buenos Aires (active)
1610 Radio Magica, at Laboulaye, Cordoba (reported inactive)
1610 Radio Fosil, at Rosario, Santa Fe (reported currently inactive)

Argentina en AM y FM FB page, July 23 to NZ DX Times via WOR iog (2023-09-03)