Phil, That was an extremely good sunspot cycle during the mid to late 50s. I worked the world with a Harvey Wells that had a single 807 in the finale. Most of it on AM with wire antennas and a ground plane on 10 meters! That must be about 10 watts PEP. 73, Kurt W7QHD (since 1951) web page: http://W7QHD.tripod.com