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Show "Radio Made Simple" 4 BY CEDRIC KI.MOTT RIKT. To the average dayman who operates a radio receiving h-i. the various terms such as pllntrons. coils, wavelength, wave-length, potentiometer, frequency etc.. etc., mean nothing st all until tie or aha has a simple knowledge, of how the sets function snd the principle on which they operate. In order to give the Idea It Is always best to make the examples ss simple ss possible and to refrain from the use of technical terms. In this article we wilt treat with the basic principle or Idea on which all radio transmitting and receiving re-ceiving sets operate. Let us first go lo the stilt pool of 1 water. This will represent the ether, T 'hat medium through which Ihe wires' wire-s' lesa or radio travels: Wi wltl pre- sume that the pool Is absolutely still and that there sre no ripples on the surface of it. Next we take a small boulder and drop It sny where tn the water. You will note thst when the boulder touches t he surface of the water thst ripple take form at ones and spread rapidly in all directions, large ripples forming st the spot where we dropped the houlder and that the further we look on the surface sur-face of the wster, the thinner the ripple, gradually dying out unt II It is no more. Now that this little diverse-nient diverse-nient Is fixed In your mind, let us compare It to Ihe radio transmitting apparatus: The houidei represents the power of the at-mling Inst runients. Your hand. In thrown g the boulder, represents the snlcnnu. or. as It is sometimes called. t he aerlsl. Ths sending Instruments, when function-lug, function-lug, throw the emrgy Into the ether, by means of an antt'iu.B. Your hand throws Ihe botildT Into the water. Roth cause ripples to go forth, the fine vlaible. the other not viriMe. The ripples in both taies being strong at the start and I Ing out gradually, , the further they travel. Now build a lit l In paddle out Into the water with a small mallet on the end that is not submerged and plate a gong at hand where the mallet may strike It. J rop snother boubler Into the water. You will notice that the ripples will cause the malh-t to move, which, in turn, will ring the gong. This example represents the receiving set of any station. The water waves sre the ether waves striking the receiving re-ceiving stsl'n 'the mallet snd paddle In this lM incident being the antenna of a reeiving atstloni and tlio gong representing the apparatus which ihsngcs the invisible waves into sound waves. The cast for "The Covered Wsgon" includes loii Wilson. .1. Warren Ker-rigsn, Ker-rigsn, t'hsrles Ogle. Kthet Wales. Alrtn Hale. Krrest Tnrrenc. Tuily Marshall, Guy Oliver and John Kox. I PI I lie Dove snd M holm MrOregnr I have the hariti.g roles tn 'All the brothers Were Valiant. filmed from! The Ten tmc IV i I ' ' a r anrv |