On March 10, 2007, I heard a Brazilian station on 1410, with this ID:
"Rádio Voz do Cerrado AM, 1410 - a nova rádio de Brasília.
Em breve, você vai conhecer a rádio que tem música, informações, esporte.
Uma rádio completa, feita so' para você.
Aqui, AM 1410. Aguarde!"
The station was A Voz do Cerrado from Santo Antônio do Descoberto, Goiás, but I got no reply whatsoever after numerous air mail letters.
On July 9, 2011, I heard a station on 1410 with the ID “ZYH803 en 1410 .... Bandeirantes Brasilia ...”. This reception was immediately confirmed by Dickson Ferreira, and to my question he also confirmed that this is the same station as the station I heard in 2007.