The Bridgeport times and evening farmer., 1919-02-22
FULL SUBSEA
 WIRELESS NEAR
Maryland Inventor Claims That He Is Now Able to Re-
 cefVe Messages.


 Underground and subsea wireless. an American invention, is the work of James HarriH Rogers of Hyatts- 1 vile, Md. The invention Is the sub ! ject of long story in the last Electrical l Bxpertmenter. In an editorial this magazine says of the striking impor- tance of MT. Rogers achievement: Last month we hinted edttorfally on the theoretical aspect of the prob lem-this month we are face to face with the accomplished fact. The war has revolutionized not only peoples, ! nations and the whole world but many | hitherto unshakabIe scientic insttu- | tous well. For over twenty years l the wireless aerial - the elevated l aerial wire system-was synonymous 1 with the wireless art The great radio station, the transatlantic liner, could not well be imagined without its ubi- quitous stretch of elevated wires. The ! greatest pride of the radio amateur, l the aerial on top of his house, which 1 to him was symbolic of the young art, is doomed. This change has been 1 brought about over night by the
 magic wand of science and her ser vant-Mr. James Harris Rogers, Am l erican, of Hyattsvflle, Md.
 The aerial wires, down for the 1 duration of the war, will never go up,
 at least as far as amateurs and pri- vate stations are concerned. As for ] the commercial stations, their towers, { too, are doomed shortly for the scrap | heap. During the war MT. Rogers de-
 veloped underground and subsea 1 wireless-for receiving at least-to ] heretofore undreamed of state of per
 lection. His receiving station at ! HyattsvilIe never missed word
 transmitted from French, English, Italian as well as German high power
 stations. He received his messages from Europe when 8, thunderstorm, i accompanied by terrific lightning, was
 going on directly above his head. Re
 gently, too, he has done away entire 1 ly with static.
 When the big station at Arlington 1 near Washington was out of touch i with Europe, due to static disturb ances, MT. Rogers went right on re-
 ceiving over his buried underground
 wires, just as if static never existed. Indeed the Rogers invention knows
 no static. Static being an atmospheric | condition, a ground antenna naturally
 will not be affected by 1t.
 But the most spectacular feature 1 of MT. Rogers's revoIutIonfzing inven- 1 ton probably is his 'subsea wireless.' | Scientists the world over. Marconi in | cluded. declared 1t an utter impossi- | bility to communicate by wireless with 1 a totally submerged submarine. MT. l Rogers, however, goes right ahead and does it, not only in fresh water l but through salt water as we'll. Indeed i he established wireless communication 1 with a subma rine whose aerial wires
 were twenty-five feet below the sur | face of the ocean!
 Although MT. Rogers during the
 war gave most of his attention toward
 receiving messa ges, he has made con siderable progress in underground radio transmission as well. His ex- periments prove conclusively that
 while underground radio receiving is
 here to stay underground sending, too 1 will soon be practical enough even for
 high power stations. It Is merely a 1 question of good insulation at present, l and the end of the year, we are quite confident, will bring the solution of
 the problem. The Navy Department
 has just succeeded in transmitting g
 distance of fifty miles with the under ground system.
 l At first 1t would seem reasonable 1 that only long wave lengths could be used with the Rogers system. But this Is not the case. Underground radio telephone messages seven miles distant come in just as clear on 800 meters wave length as does the
 Nauen (Germany) station with 1000
 meters wave length. This Indeed is good news for our amateurs.
 ] But in the meanwhile all of our pet
 theories on wireless are thrown in sad chaos. For we do not know as yet
 how the Rogers system works. We
 can now expect a war to the knife be-
 tween our wave propa gation theorists
 and the new school of grourJ impulse i savants- Mir. Rogers himself takes the view-and he is seconded by Tesla that the transoceanic messages
 which he receives over his under ground system are not Hertzian waves pure or even converted-but mere
 ly high frequency ground impulses
 Telling of the inventor, the Electri- cal Experiment says:
 James Harris Rogers, practically
 unknown a few years ago in radio cir cles, except by a few select radio men
 who were Investigating his invention
 for the Navy Department, has prac-
 tically become over night the center of all attractions in the field of science. | MT. Rogers is a son of the Confed- , eracy and a veteran of the great civil war. He has followed electrical eX- perimenting ever since and has been
 strong devotee of radio telegraphy ; since Marconi performed his first ex- peri1nents in this new branch of ap- piled science. He is a refined, cultured . Southern gentleman who makes you
 feel at home at once; an tnvaTiable at tribute of all the truly great. MT. Rog- CTS was one of the first inventors of 7 the printing telegraph" and his full = sized working models saw actual com = mercia1 service on a circuit between F Baltimore and Washington, also in l New York, back in 1880. These were 3 seen by the writer, and are wonderful
 pieces of mechanism.
 The Rogers laboratory, which
 comprises several large rooms. is lined
 on all sides with glass cabinets con- f taining electrical apparatus which he
 has invented from time to time in his studious career. A novel and original high frequency generator was another . of the devices that greatly interested the writer. It employed a jet of wa > ter shunted by a large capacity, the stream of water being connected to a [ high potential source of direct current. High frequency current of any range v f4 jtVv ok,