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RCA 44 BX Velocity Ribbon Microphone. RCA introduced the 44 series of velocity ribbon microphones in 1931. It was designed by Harry F. Olson. The 44 became the mainstay of broadcast microphones due to its bi directional pattern and excellent reproduction.T 368 Military Transmitter Great Basin
When it comes to military transmitters the T 368 is a favorite of military radio enthusiast hams for several reasons. It's a brute of a transmitter that can produce over 400 watts of RF carrier output power in the AM mode and over 450 watts in the CW mode all while being powered by the 115VAC line.Radios For Sale at the Radio Attic the Best Place on ...
A. Acceptability of Printed Wiring Boards (book) By IPC A 600A, Institute Of Printed Circuits September 1970 (Revised).This publication is a compilation of visual Quality Acceptability Guidelines for Printed Wiring Boards prepared by the Reparability and Acceptability mittee of Institute of Printed Circuits.
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