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Actually both the Philco Safari and the Sony 8-301W had three tubes each, the crt and the two HV rectifiers. The Philco used two 5642 HV rectifiers tubes and the Sony used two 1DK1 tubes. High voltage silicon diodes were not yet available at the time.
Sony's web site incorrectly states that the 8-301W was the worlds first fully transistorized television, but the Safari beat it by over a year. So much for Sony revisionist history.
Darryl
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