Kevin, KD5ONS, wrote: "One way propagation is not unheard of..." Is there really such a thing as one-way ionospheric propagation? My intuition says no, but I don't have the physics knowledge to back it up. On the other hand, sometimes it sure seems that stations who ought to be able to hear my QRP signal cannot. 73 & 72, Jeff WB5GWB Long Island, NY