Quality Tour of RCA's Receiving-Tube Manufacturing Facilities

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7. The purity of materials is also important. This high vacuum and high temperature melting process is one of RCA's new additions to the specialized technique of tube making. Temperatures in the heart of this vacuum furnace reach 1500° C.

8. The advantage of vacuum melting is that purity can be precisely controlled. Just the right amounts of chemical elements can be added to get the exact electrical characteristics needed for a quality tube part.

9. S311 is RCA's name for a new plate material with a virtually perfect black body characteristic. It fights two dangerous enemies of tube performance; element overheating and interelectrode leakage. Hence, S311 assures more stable operation and long, dependable performance.

10. When it comes to plating wire, RCA uses the finest in raw materials. As the wire unwinds, it is carefully inspected.

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11. To combine the best performance with the longest tube life, RCA is continually investigating processes and developing innovations in the receiving tube field. Even with the best research, design, and raw materials, a tube has to be expertly put together before you can put it to work with confidence. RCA proudly boasts the best tube-making staff and machinery in the world. They're unmatched in their ability to bring top quality to all parts of a tube - large and small - with care and precision.

12. A specially developed automatic lathe forms grids that are constantly sampled to insure uniformity.....none too large, none too small.

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