"I thought the "3000" part of the tube nomenclature indicated 3000 watt
dissipation"
*******In most cases this is true, The 3CX3000F7 (4000 w) and the 4CX150G
(250 w) are at least two that differ.
"The oscilloscope display show pretty terrible distortion on the negative
(versus positive) peaks"
*******You are correct. The driver used in the scope example had non linear
6X modulation peaks instead of the current driver (Viking II) of 4X
modulation peaks. I will have to retake the photo in the next two weeks.
Thanks for pointing this out to me.
http://w2dtc.com/w2dtc-3cx3000f7/2004-0723-scope-wattmeter.jpg
73,
Ken W2DTC
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