In accordance with the recently published news, that Radio Tarma, Peru, 4749.9 kHz, was testing a new transmitter with 2 kW of power, and as it seems there was no improvement in the signal strength, I contacted with Radio Tarma via mail and in their replay they say that the new transmitter will come into operation soon and they will be announced the event when it takes place.
Here is the email replay from the station received today October 29:
"Muchas gracias por tu interés, Manuel. Si, próximamente estaremos operando con un nuevo transmisor. Lo vamos a anunciar. Saludos"