Some developments in long-distance radiotelegraphy

At a meeting of the Radio and Telecommunication Section on the 14th November 1956, Mr. H. B. Law presented several papers* written by himself and members of his group from the Post Office Research Station. The papers were the result of investigations into the reception of h.f. telegraph signals, and they are reviewed by Mr. Law in this article. They are all republished in this month´s issue of the Proceedings, Part B.