VOA Radiogram program 123, 1-2 August 2015, we transmitted images in the MFSK16, MFSK32, MFSK64, and SSTV Scottie DX modes. Each required about 4 and a half minutes to transmit and resulted in images  about 320x356 pixels in size. 

Roger in Germany,  from his reception 1 August at 1600 UTC in 17870 kHz (transmitter in North Carolina), provided images comparing the four modes …

For more details about Roger’s reception, see …

http://www.rhci-online.net/radiogram/VoA_Radiogram_2015-08-01.htm#VOA