To my surprise, on 16 June 2025, some very nice signals could be heard from South America. However, they were only audible on frequencies above 1350 kHz and were disrupted by heavy thunderstorms in Central Europe. But it shows that you should keep searching even on ‘weak’ days.

1230 0205 ARG Radio 2, Rosario (sf) 11595 km
1270 0040 ARG Radio Provincia de Buenos Aires, La Plata (ba) 11591 km
1350 0245 ARG Radio Buenos Aires, Malvinas Argentinas (ba) 11612 km
1360 0240 PRU Radio Sicuani, Sicuani (cus) 10768 km
1400 0250 B Radio Difusora Acreana, Rio Branco (AC) 10162 km
1430 0242 PRU RPP Noticias, Cusco (cus) 10754 km
1470 0238 PRU Radio Victoria Arequipa, Arequipa (are) 10959 km
1490 0248 PRU Radio Dios es Amor/Cadena Sur, Cusco (cus) 10754 km
1510 0245 EQA Radio Monumental, Quito (pic) 10134 km
1550 0243 PRU Radio Checca, Checca (cus) 10790 km
1560 0251 PRU Radio María Perú, Wanchaq (cus) 10755 km
1570 0247 PRU Radio Carráviz, Juliaca (pun) 10802 km
1600 0302 B R·dio Nove de Julho, S„o Paulo (SP) 9920 km