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RCA UX-213 "Rectron" Tube |
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| The UX-213 was developed by GE and marketed through RCA. It was introduced in September 1925 as a full-wave rectifier for use in radio receivers. It was on the market for only about a year and a half, so it is quite rare today. In May 1927, it was replaced by the more robust UX-280 which, in its various formats, remained in production for a longer period than any other tube. | ||
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