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You know it's funny how we can overlook the simple things especially when dead tired. :blink: I had about 2 1/2 hrs. sleep in the previous 39 hrs. and had worked the night shift in the middle when Ilast posted here. I agree about the metering resistors. I had a Heath DX-60 that would load up to proper plate current according to the meter but would only make 15 watts of carrier in CW mode. Swapped tubes and the same thing. I found out that the meter resistors were way out of whack and the plate current was less than half of what it should have been despite the meter reading.

[QUOTE="Captain Kilowatt, post: 339612, member: 39"] You know it's funny how we can overlook the simple things especially when dead tired. :blink: I had about 2 1/2 hrs. sleep in the previous 39 hrs. and had worked the night shift in the middle when Ilast posted here. I agree about the metering resistors. I had a Heath DX-60 that would load up to proper plate current according to the meter but would only make 15 watts of carrier in CW mode. Swapped tubes and the same thing. I found out that the meter resistors were way out of whack and the plate current was less than half of what it should have been despite the meter reading. [/QUOTE]

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