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SX-42 for $2250.00 how did I miss it?
"Antonio Vernucci" wrote in message ... Can any one explain the rationale behind using both octal and loctal tubes in the SX-42? 73 Tony I0JX Some locktal tubes had quite low interelectrode capacitance compared to their octal equvalents due to the stem seal base with shorter leads than octals. They were also quite rugged since they were originally intended for automobile receivers and some had less microphonics. Remember, locktals predated miniature tubes but had some of the advantages of miniatures due to the method of bringing the leads out. Good engineering practice is to use as few variations of parts as possible but Hallicrafters never seems to have been concerned with it. I rather think their philosophy was that people would use a piece of their equipment until the new model came out. One can find a lot of advanced technology in Hallicrafters stuff, like the use of acorn tubes, beam switching tubes, pentode RF power tubes, etc, but often not applied very well. -- -- Richard Knoppow Los Angeles WB6KBL |
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