Note
CQ, Feb 1958, page 101.
CQ, Sep 1958, page 23. (300A)
The Vantron 300 linear amplifier was manufactured by the electronics division of Van Norman Industries, Inc. of Manchester, New Hampshire. The company’s amateur equipment bore the Transitron brand. It used four 6CL6s and covered 3–35 MHz continuously. It was rated at 150 watts PEP on SSB and advertised as an intermediary driver between a low-power sideband transmitter and a full-legal-limit amplifier.It had an internal power supply. A later 300-A version used a pair of 6CA7 tubes.
The 300 and 300A are visually identical. Improvements not stated.