for verification . please help improve this article by adding citations to reliable sources . unsourced material may be challenged and removed. find sources: "radiotelephone" – news · newspapers · books · scholar · jstor (april ) ( learn how and when to remove this template message ) comparison of an...
licensed in the state. the broadcast signals of the nine television stations and radio stations cover almost all of the state, as well as parts of alabama, florida, north carolina , south carolina and tennessee . the network's headquarters and primary radio and television production facilities are located...
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signals. one advantage of coaxial over other types of radio transmission line is that in an ideal coaxial cable the electromagnetic field carrying the signal exists only in the space between the inner and outer conductors . this allows coaxial cable runs to be installed next to metal objects such as...
[ ] the source of the image was a glass slide, backlit by an arc lamp . an extremely bright source was required because of the low light sensitivity of the design. by , farnsworth had developed the system sufficiently to hold a demonstration for the press. [ ] his backers had demanded to know when they...