Show Ii Wireless Telegraph Plant Operated by Boys In Newport It I are two wireless telegraph plants owned and operated oper-ated by boys which nro perhaps the most completo amateur plants In tho country They belong to Lloyd Man uol who has his plant nt his homo on Third street nnd Henry Hoonoy whoso apparatus is situated on Mt Vernon street Doth boys receive and send mes ages but nro particularly busy In receiving re-ceiving tho many messages that aro sent to tho wireless station at tho naval torpedo station At times tho operators at tho torpedo station talk with tho boy operators at Newport adjustable Tho length of the wave In regulated with this apparatus by moving tho chips In cither an upward or downward direction After ascertaining ascer-taining precisely tho right position tot a certain station It Is an easy niattoi to keep this In mind and no furthot trouble Is experienced Though other stations than the one they aro callIng call-Ing may receive tho message It is heard most distinctly by ttio station to which tho apparatus Is adjusted Tho greatest Improvement over tin earlier Instrument Is In the wave do lector Two pieces of carbon with 111 ordinary needle placed across tluin r r I I a 1 I II III I = iy r r The House Used In Wireless Experiments and the navy men both enllsted men md officers are much Interested In tho work of the amateurs Last winter Charles Fielding n messenger mes-senger boy employed by tho Postal telegraph company constructed a wireless station and sent and received messages So Interested did Commander Com-mander Albert Cleaves of the torpedo station bocomo in the apparatus and work of the messenger boy that ho visited tho Improvised station at foldings home with tho result that Flldlng was enlisted In tho navy though two years under tho ago limit This last act was waived as tho navy was anxious to have tho services of ho young expert Commander 31eavos made a full report of Field ings apparatus to tho navy department depart-ment Fielding Is now an electrician in tho navy and Is stationed at tho Brooklyn navy yard Manuel and Rooney spend practically prac-tically all their spare tlmo working and experimenting with their outfits and have made several Improvements and additions to their first rather crude apparatus In the part of the apparatus which Is used for sending messages a condenser con-denser and a tunning toll are used This Is a brass wire connected with the aerial and to the Instrument Itself by means ot leads or chips which are rl A > A aJ2IYo1n n was tho way In which tho first detector de-tector was made Now tho boys use an electro lytle receiver This consists con-sists of a hair like platinum wire which Is partly contained In n recOil tacle containing acid to which It Is fastened by means of a screw adjustment ad-justment Another tanning coil Is used similar to the ono used In sending send-ing but In this toll there are many more turns of wire A sliding contact con-tact Is employed and In this manner any part of the toll can bo used A receiver attached to tHe head similar to the ones used by telephone operators Is used The sliding contact con-tact Is then moved up and down until un-til the apparatus responds The general aim of all experimenters experiment-ers In tho field of wireless telegraphy at the present time Is to discover a selective system of transmitting messages mes-sages This Is a system whereby It will bo possible to transmit messages trqm one point to another without outside stations being ablo to interfere inter-fere or butt In This latter Is now the greatest defect de-fect In wireless telegraphing as other stations than the one Intended get tho message Of course these may not understand the message If It Is sent inn In-n code but they are ablo to bother tho sender and receiver to a greater or less extent ulrr ° J nAAn |