Radio Gratitud has recently popped up in Buenos Aires on 1670 kHz on the extended AM band. The Christian station is unlicensed, as most new stations in Argentina are. You can reach the station by email or by writing to Weiss de Rossi Nº 3056, Barrio Almafuerte de la localidad de Glew, Partido de Almirante Brown, Provincia de Buenos Aires, Argentina, or phone at +54 (0)2224-43-6516. Pastor Diego Angel Gloria is the station manager. Also in Buenos Aires, Radio Nueva Bolivia has changed from 1640 kHz to 1630 kHz. Information about these changes was first published by DXer Marcelo A. Cornachioni in Grupo Radioescucha Argentino blog.
(Source : DXing.info)