I sometimes go to 14.230 MHz and see what's being sent. I just leave it running and come back after a half hour or so to see what images I've gathered up. I've also used it to copy images from the International Space Station and I've managed to grab a few pictures sent by Pirate Short Wave stations.
This thread reminded me about an SSTV received image web page. It covers different parts of the world. One can use it to see if and how well a transmission is received. I think it is still active. Hmm...some images are very old and some are new.