Show 20 Ob Observation S To lo f Test Cause of Radio Fading Investigations of fading on a ascale scale never attempted in th the United States will be made in mid mid- mid January January at twenty observations sta- sta sta stations it was announced today by by- J 1 JK Ie K Smith of t thi th Stewart Stewart- Warner Stewart Stewart corporation j Hitherto such experiments ita ve been carried on en ti-i ti m isolated sections of the country between b tween two or at most three s The results of such research have been There is still no explanation of why signals should be in the win wintel winter tel tar than static leaps out of one ones one's hair or ot sparks out of the rug at ones one's fee feel and weak in summer sum sum- summer mer when there tare apparently no static charges in the things about us according to Mr 11 Smith The Varner Varner observation posts will chart s on selected distant stations every two minutes during the period perio 1 of the tests The results will be a and plotted on a map similar similar to that issued bythe by bythe bythe the government Weather eather bureau His It Itis Itis is the belief of the thc engineers- engineers con con- conducting conducting conducting ducting the test tests that curves will make possible a comparison of effects and te t search serch for or causes will result If so th thc experiment will ie be b repeated at regular intervals through through- throughout throughout h- h hout out the winter vinter t By a comparison of fadin fading and the electric curve curves with those of the theU theU th thU U S Weather map p it will be possible possible ble to determine the fhe the effect of weather er ci- ciOn on such phe said Mr S Smith i h By platt ig platting rg the curves of fading and st static iii in tests on stat stat- stations ions of ya varying ying wave length some ta tangible gible progress es may be made mace to- to toward toward toward ward discovering what frequencies tire best for broadcast The uThe plan to hold h ld the tests origin origin- originated originated in a discovery that Chica Chicago o re- re reception reception reception this failed to follow the accepted rules There have been several cidar cold nights on which it has been impossible to hear stations station miles distan On uOn the other hand there that have hae be been n warm wet nights night entirely free from static and pede perfect t for broadcast re- re reception re reception from dis distant points t Li |