The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 326
Antenna insulators are often made of com-positions, such as the material called electrose, which is made ANTENNA CONSTRUCTION. 323 with a shellac binder. These insulators are made in variousshapes, including rods, and usually have eyebolts or other metalpieces molded in. Insulators are also made… … AAst Itiverfgd L Antenna, Showtnc^ In&ul&tors F(c5 ns F(Q nG
Telegraph, Wireless · Radio
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