Türksat 42° logos
"After you have downloaded or created the required logos, you need to put them in the correct folder for MediaPortal to find them. Inside this folder, there is a folder \Thumbs\TV\Logos where you put your TV logos,
and MediaPortal\Thumbs\Radio for radio logos." (source: http://wiki.team-mediaportal.com/1_MEDIAPORTAL_1/15_Customization/92_Logos/1_Channel_Logos)
there are more http://www.lyngsat-logo.com/tvcountry/tr_1.html
good night
"After you have downloaded or created the required logos, you need to put them in the correct folder for MediaPortal to find them. Inside this folder, there is a folder \Thumbs\TV\Logos where you put your TV logos,
and MediaPortal\Thumbs\Radio for radio logos." (source: http://wiki.team-mediaportal.com/1_MEDIAPORTAL_1/15_Customization/92_Logos/1_Channel_Logos)

there are more http://www.lyngsat-logo.com/tvcountry/tr_1.html
good night