Show TESTS TESTS MADE TO IMPROVE BROADCASTS Experts W Working orkin to Bring Greater Joy to Fans W WASHINGTON Jan Jn 6 t A Am mall m ll group of at workers worker In II a along alone long low building here J A Js the body on which tin fans ot of America depend for tor Improved radio re- re reception reception r In the th future This group forms the th radio laboratory staff of at the United States bureau of at standards standard It Is working with testing and Ins IsI I ing Instruments to learn causes of Interference to keep a close heck deck on the frequencies or wa of et broadcasting eta sta stations and to do many other ta I things that arc are ultimately de de- de signed l to bring greater joy and 1 contentment to the radio tan fan At the head of at the laboratory is Dr J IL JL cr president of the Institute of Radio Engineers in 1925 1 25 and a physicist in the bureau of at standards since HO lIe Ie Is one on of at the few tew recognized authorities on radio In the United States Working Working- with him are arc men and women each of at whom has at- at accomplished ac accomplished some som definite Improve Improve- Improvement Improvement Improvement ment In ta the th radio field E 1 Z Z Stowell for instance has been working on the th measurement of at radio field tl ld Intensities a problem ot at great creat Importance In the con con- control con control troi of power of radio stations WOt I VOMA CHECKS STATIONS On the work of ot Miss Grace Hazen are arc based the th fundamental fundamental fundamental tal frequency standards of at the bureau and of at the th country And there ther are ar others In f fact et the studies of at Uncle Sams Sam's Sam radio staff would read like a list of at atall all the th problems problem confronting ra- ra radio radio ra radio dio today static today static Interferences of at stations wavelength or frequency control an and standardization di- di directional di directional transmission and recep recep- reception reception reception tion tion high and low frequency transmission daylight and night effects effects and any other related sub sub- subject subject sub sub-lect that might come corn up for tor study In addition the th staff at times Is called on to test apparatus and to help formulate standards for forthe forthe forth the rad radio 10 trade Atop top the th Radio Laboratory building are three types of ot aerials for transmission on short Inter Inter- Intermediate mediate and long lone wavelengths and additional antennae antenna are ar put up at times for tor radio reception ILL ALIJ n U ARE AnE TESTED Inside are ar various forms form of at loops and apparatus by which the staff may be b able to keep track of t the signals signal that speed peed through tho ether from the lowest experimental experimental experimental wavelengths wa to the high high- highest est est bands of at ship stations station and government go departments One On Instrument developed at the laboratory Is I a small mall meter 1 meter 10 1 transmitter used for tor testing bort saves e ave Another Is I a directional loop for the th study of ot directional transmission and still another Is the valuable device devic perfected by Miss Hazen Haxen by which the ire ire- frequencies fre frequencies of broadcasting stations are checked up and standardized standardize All of at the th work of at this labora labors laboratory laboratory tory Is directed for the th Improve Improvement e ment meAt of for radio radio tor the attain attain- attainment ment of at conditions more enjoy enjoy- enjoyable enjoy enjoy-abl able abla and beneficial to reception than those thoe existing today 00 |