Some Spectra Measurement in Porto Alegre MW Band

Here's some spectra from MW/MF/AM band  with the modulation a few stations in Porto Alegre region. I'm

Abaixo alguns espetrogramas da banda de OM/AM com a modulação de algumas emissoras de Porto Alegre.

Gaúcha 600KHz, +/- 8.5KHz, 591.5-608,5	From PU3HAG-Spectra-Measurements-POA-2011-03-07
Bandeirantes 640KHz, +/-9.75KHz, 630.25-649.75KHz	From PU3HAG-Spectra-Measurements-POA-2011-03-07
Farroupilha 680KHz, +/12KHz, 668-692KHz	From PU3HAG-Spectra-Measurements-POA-2011-03-07
Guaíba 720KHz, +/-9.995KHz,710-730KHz (QRM up to 708-732KHz)	From PU3HAG-Spectra-Measurements-POA-2011-03-07
UFRGS 1080KHz, +/-9.75KHz, 1071.25-1089.75 (seems they don't use expansion)	From PU3HAG-Spectra-Measurements-POA-2011-03-07
CBN 1340KHz, +/-10KHz, 1330-1350KHz	From PU3HAG-Spectra-Measurements-POA-2011-03-07