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The theoretical rcsults given in p a r t 1 (NBS R esearch Pa pcr 2687) fo], g round wave propagation over a mixcd pat h on a flat earth are ge nerali zed to a spheri cal earth. The problem is formul ated in ter ms of t he mu t ua l impeda nce between t wo vert ical dipoles whi ch are locatcd on eit her s ide of t he boundary of separat ion . Extensive llumerical r es ul ts ar c given in graph ica l form for a mi xed la nd-sea path at frequ e ncies of 10, 20, 50, 100, a nd 200 kilocycles per scco nd .

Mixed-path ground-wave propagation: 2. Larger distances