The Cordova daily times., 1919-06-20
NAVAL RADIO
 BUSINESS TO BE EXTENDED

SAN FRANCISCO, June 20 (by As sociated Press) naval radio communication across the Pacific dur ing the last two years, supplementing the Commercial Pacific cable. has car. ried greater volume of transpacific messages than ever before transmit ted, plans have been approved that will increase this volume to five or six times the present capacity. h. formation concerning these proposed Improvements revealed here, indicates that the fast-expanding demand for commercial communication facilities which have led to plans in Japan for a new transpacif1c cable, will be met by radio transmission and congestion will soon be matter of the past.
 Installation of automatic high speed sending and receiving apparatus at all high-power naval radio stations, and the opening of a second transpacif1c radio circuit are two of the main i'm provements that have been approved. Vast strides in radio transmission have been made during the past two years, improvements that, however, have been guarded as war secrets. When detailed reports are made avail able of the amount of communication handled, commercial and government, and complete assumption of transpa- cific communication by the naval radio during periods when the cable was rendered usless, by breaks, the revela- tion of service will come as a surprise to those interested in transpacifc com munication, it has been learned here.
 The present United States naval radio communication transpacific serv- ice is maintained for comercial work out of San Francisco to Pearl Harbor, Hawaiian islands, from which circuits are maintained to Funibashi, Japan, Cavite, Manila, which relays to the Far East, Tutuila, Guam and other stations in the Pacific.
 It is upon this circuit that automatic high speed sending and receiving ap. paratus will be installed, increasing the transmission efficinecy five or six times.
 It has been necessary for the naval radio station at Guam to serve as relay between Cavite and Pearl Harbbr, but a short time ago improvements by means of subterranean antennae have permitted direct communication be- tween the Hawaiian islands and the Philippines.
 The use of subterranean antennae, used with excellent results on the At lantic coast, was just added to the naval radio communication service in the Pacific. Instead of high aerials, the antennae is placed a few feet und- erground or in the water.
 Another important feature of i'm provement in transpacif1c radio serv- ice being inaugurated at present is re- mote control stations. This means op- e1ating of the transmission by land telegraph wire the transmitting key thus being some distance from the transmitting aerials. The result is that there being no interference by noise of sending, the service is du- plcxed, messages being sent and re- ceived at the same point.
 Additional power has been author ized for this circuit, contemplating in- stallation of new power plant at Ca vite, which upon completion will per init at least of cutting down one relay; and 800 kilowatt plant at Guam with distant control which will permit di- rect communication between San Fran cisco and Guam, thus eliminating the relay at Pearl Harbor. In addition the transmitting station at South City, San T 100 kilowatts.
 The next important development will be the establishment of second transpacific circuit to the north, from a high power station at Newport, Wash tngton; to St. Paul, Pribilof islands; to Russian island, Vladivostok: to the Marines Station, Picking, and Cavite. Those stations are all American radio stations. The Russian island station at Vladivostok will be able to com municate in addition with Shanghai, g French station; Omsk. and other si- berian stations.
 The Russian island station for some time past has been copying govern ment matter from the Point Loma, San Diego station although unable to reply. owing to incompleteness of the trans mission set. Just recently, however, the transmission set was reported in | -A- f->.