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Leonard Fuller's notes read, "No interest. Remote control of 4 short wave vacuum tube transmitters was handled from this switchboard. That is, control of tuning and adjustments, not of dot and dash telegraph signals." From a binder of Federal Telegraph Company material created by Leonard Fuller circa 1965.
Federal Telegraph Company Vacuum-tubes (LCSH) Shortwave radio (LCSH) Remote control (LCSH) Switchboards Radio--Transmitters and transmission (LCSH)