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Author Topic: Tales about the Mighty 6L6  (Read 3889 times)
WA2ISE
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Posts: 1051




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« Reply #15 on: October 28, 2017, 11:25:11 AM »

I vaguely remember seeing a magazine article for a "pennywhistle" novice transmitter.  Hot chassis, using AM tube radio tubes (50C5, 35W4, and such).  The hot chassis hazard on the RF output could be handled with capacitors, but the code key connection would be more of a problem.  Maybe use the 12BE6 pentagrid tube as the crystal oscillator, and control its output by keying zero volts on the antenna grid for transmit, and a negative voltage around -20V to shut the RF off. 
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K0WA
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Posts: 102




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« Reply #16 on: October 29, 2017, 05:53:34 PM »

I operated a 6L6 metal tube which was built on a paint can lid.  The paint can was filled with oil with metal tube submersed in the oil.  A shield box was over the circuitry.   Xtal control, CW, and it could put out some watts...around 50 to 60 watts..  fun times

Lee
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