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RCA Tube Testimonial from WISL Engineer Ray Willard

  • November 13, 2014
RCA Tube Testimonial from WISL Engineer Ray Willard

Here an interesting find; A trade magazine advertisement for RCA-866-A tubes printed in a 1956 edition of "Broadcasting Magazine". Through the 1960's the vacuum tube was a vital part of most audio transmitting and receiving equipment. The rectifier tubes advertised here were used in the transmitter of WISL and according to WISL's Chief Engineer Ray Willard were very dependable. In this advertisement, RCA touts their tube's dependability with this testimonial quote from Willard... "I thought you might be interested in the report of two RCA -866A mercury -vapor rectifiers we have been operating...

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