Broadcasting (Oct 1931-Dec 1932)

Record Details:

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From "Radio Headquarters" O ■ © @ @ -a-1 > o Type EX-qijo Frequency Control Equipment Precision Frequency Control for Broadcast Stations TPOR the use of those stations not heretofore equipped with 50-cycle control. To enable these stations to make, with the least difficulty, the necessary changes in their existing equipment to properly comply with G. O. No. 116. Designed by the engineers responsible for the remarkable record for frequency stability set by RCA Victor transmitters in the field. Consisting of three unit panels which may be used separately or together to fit efficiently any particular need. Crystal Oscillator Mounted on a 19" x 14" panel for rack mounting. Using a new Type UX843 Radiotron (heater-cathode type UX-210). Completely enclosed in a temperature-controlled cabinet. Provided with either one or two crystal heater chambers, each with independent heat control. Designed to furnish plus or minus 50-cycle frequency control. Buffer Amplifier Mounted on a 19" x &%" panel for rack mounting. Using a new Type UX-844 Radiotron (heater-cathode type UX-865). Furnishing (when two such stages are used) excitation for a UX-860 or equivalent. Power Supply Mounted on a 19" x 12%" panel for rack mounting. Using two mercury vapor-type 866 Radiotrons. Furnishing plate and filament voltages for one oscillator and two buffer stages. ENGINEERING PRODUCTS DIVISION RCA Victor Company, Inc. A Radio Corporation of America Subsidiary camden, n. j. "Radio Headquarters" April 15, 1932 • BROADCASTING Page 29