Chapter I.
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/statutes-at-large/vol-63/chapter-i-6126924·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
Chap. I, art. 1 RR)(6–17) 6 *Radio:* A general term applied to the use of Hertzian waves. 7 *Telegraphy:* A system of telecommunication for the transmission of written matter by the use of a signal code. 8 *Telephony:* A system of telecommunication set up for the transmission of speech or, in some cases, other sounds. 9 *Television:* A system of telecommunication for the transmission of transient images of fixed or moving objects. 10 *Facsimile:* A system of telecommunication for the transmission of fixed images with a view to their reception in a permanent form. 11 *Radiolocation:* Determination of a position or of a direction by means of the constant velocity or rectilinear propagation properties of Hertzian waves. 12 *Radionavigation:* Radiolocation intended solely for the determination of position or direction or for obstruction warning, in navigation. 13 *Radar:* Radiolocation system where transmission and reception are carried out at the same location, and which utilizes the reflecting or retransmitting properties of objects in order to determine their positions. 14 *Primary Radar:* Radar using reflection only. 15 *Secondary Radar:* Radar using automatic retransmission on the same or on a different radio frequency. 16 *Radio Direction-Finding:* Radiolocation in which only the direction of a station is determined by means of its emissions. 17 *Telegram:* Written matter intended to be transmitted by telegraphy; this term also includes radiotelegram unless otherwise specified. 63 Stat. 1584 (18–30)(
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