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  1. J

    Later version of Galaxy DX2547 used IRF520 MOSFETS in final, and its driver

    In the Galaxy DX2547, they replaced the 2SC1969 Final Transmitter Amp, and its Driver, 2SC2166C, with MOSFETS IRF520. Why? Why would that be an improvement, technically? Thanks for sharing your knowledge.
  2. J

    SBE Console II, 16CB and Later 16CB/T QUESTION

    SBE 16CB gave: A.M. 5 watts input; SSB 15 watts input, while the later version, SBE 16CB/T (the T version) gave A.M. 4 watts input; SSB 12 watts input. QUESTION: Electronically, what did SBE do, specifically, to get increased power input earlier, while later reducing power input...
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