was completed at Stump Neck, Maryland. The first tests of this antenna were impressive; the returning signal was of much higher fidelity than expected. This presented the possibility of using a Moon circuit as a communications circuit. Unfortunately for PAMOR, collecting Soviet radar signals would require a larger antenna. Efforts began to have such an antenna constructed at Sugar Grove, West Virginia. Development With the PAMOR project requiring a larger antenna, the Stump Neck antenna was pushed into service for testing whether communication via the Moon was possible. This marked the emergence of the Moon Relay as a separate project. Test transmissions between Stump Neck and Washington, D.C. were carried out; the first satellite transmission of voice occurred on July 24, 1954. These were followed by the first transcontinental test of the system on November 20, 1955; the receiving site was the U.S. Navy Electronics Laboratory in San Diego, California. After corrections to reduce signal loss, the transmissions were extended to Wahiawa, Hawaii. The Navy received the new system favorably. A Navy contract for the project soon followed the successful tests, and, among other things, it was recommended that American submarines use Moon-reflection paths for communications to shore. Expansion The Moon Relay project was soon transferred to the Communications Section of the Radar Division of the Naval Research Laboratory. Under this department, the system was upgraded to use the ultra high frequency (UHF) band. The experimental system was transformed into a fully operational lunar relay system linking Hawaii with Washington, DC, which became functional in 1959. The new system was officially inaugurated in January 1960, when Chief of Naval Operations Admiral Arleigh Burke sent a message to Commander, Pacific Fleet Felix Stump using the system. The finished system used two sets of transmitters at Annapolis, Maryland and the Opana Radar Site in Hawaii and two sets of receivers at Cheltenham, Maryland and Wahiawa, Hawaii. It was later expanded to accommodate ship-to-shore transmissions to and from the USS Oxford (AGTR-1) and USS Liberty (AGTR-5). Results The Moon Relay system became obsolete in the later 1960s as the Navy implemented its artificial satellite communication system. However, the information gleaned from the project in fact made the later artificial system possible. Additionally, the equipment used in the Communications Moon Relay project was of much use to U.S. Navy astronomers, as they used it to examine the Moon when the Moon was not in