I carried out my first WSPR tests this evening on 30m. Rig is an Icom IC-746 running about 5W, or at least as little RF as I can, and the antenna is an American PAR End Fedz 40/20/10. It runs from the upstairs spare bedroom 'shack', and is tacked to a door frame. The wire then runs down the length of the hallway, then down the stairs towards the front door of our small house. Hardly ideal, and besides, the antenna is nowhere near resonant on 30m with a very high SWR.
Nevertheless - I was heard in Japan, ZL, and USA, and was also hearing stations bordering the Pacific. Not bad given the antenna restrictions!
I hope to either fit a resonant 1/2wave indoor wire up for 30m, or alternatively build a magnetic loop for indoor use that I can tune up on 30m.