Very nice reply last night from a great radio station in Chachapoyas, Perú: Radio Reina de la Selva 5486,68.
José David Reina, Gerente General, sent me a nice email with four photos from Chachapoyas attached. He writes that Chachapoyas was founded by the Spanish on 5th September 1538, and is situated 2250 metres above sea level. It's the capital of the Departamento de Amazonas.
Radio Reina de la Selva has a quite nice home page: http://www.reinadelaselva.com/
QSL no. 50 from Perú in my collection - it took me 25 years.