Radio Broadcast (May 1927-Apr 1928)

Record Details:

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In the Laboratory of a Tube Manufacturer Where diligent investigation precedes production of any new kind of tube. The particular laboratory here shown is given over to the study of rectifier tubes — the kind you are accustomed to use in your power-supply devices to rectify the a. c. of the house supply. This investigator is shown engaged in the construction of an experimental tube, which will afterwards be tested and, as likely as not, discarded. It is said that about 99 per cent, of these hand-made experimental tubes are discarded without even being put into production. AVhen we consider the expense of such tireless research, more and more do we recognize the logic of the statement, that it is only the larger and more "moneyed" manufacturers who are capable of producing dependable radio equipment 194