Show Loop and Elevated Aerial Aerials I IAn An extensive research on radio transmission and reception with vari vart- various various ous ens types of at aerials has been in progress progress ress at the bureau of standards Washington Wash Wash- ington D. D CX C. says the Scientific American Amer Amer- ican One of ot the most interesting questions at the present time Is as to the relative advantages of the antenna antenna an an- tenna or usual type of ot elevated aerial and the smaller colt coil aerial or loop This question Is answered by the studies of the bureau The small coil coll aerial has many advantages but is usually not so powerful a transmitting and receiving device as the antenna type of aerial It may however have eo so much lower resistance than the antenna antenna an an- tenna that It Is equal to It in transmitting transmitting trans trans- mUting and ond receiving value |